This document lists all of the SI, metric, American, English, historical, and ancient measurements currently recognized by Entisoft Units. It includes the abbreviations, synonyms, formal names, and physical description of those measurements where appropriate. This list also includes the prefixes and global text replacements which are recognized by Entisoft Units. Each measurement is listed twice--once alphabetically by name, and once alphabetically under the category of physical measurement it represents.
" = " inch "
$ (US dollar) = $ (currency; base unit)
% (percent) = .01
' = " foot "
*approx = ""
*avg = ""
*exact = ""
/ = replacement for " per "
^2 = replacement for "squared"
^3 = replacement for "cubed"
A (ampere) = A (electric current; base unit)
a (atto) = 1E-18 (prefix)
a = are (area)
abA = abampere (electric current)
abamp = abampere (electric current)
abampere = 10 A (electric current)
abC = abcoulomb (electric charge)
abcoulomb = 10 C (electric charge)
abF = abfarad (capacitance)
abfarad = 1000000000 F (capacitance)
abH = abhenry (inductance)
abhenry = .000000001 H (inductance)
abmho = 1000000000 mho (conductance)
abohm = .000000001 ohm (electric resistance)
absolute temperature = thermodynamic temperature (thermodynamic temperature)
absolute viscosity = dynamic viscosity (dynamic viscosity)
ABSORBED DOSE
gray = J/kg (derived unit)
Gy = gray
Rad = .01 Gy
absorbed dose = specific energy (specific energy)
abV = abvolt (electric potential)
abvolt = .00000001 V (electric potential)
ACCELERATION
acceleration = m/s^2 (category unit)
acceleration linear = acceleration
freefall = g
g (gravitational acceleration) = 9.80665 m/s^2
galileo = .01 m/s^2
gravitational acceleration = g
linear acceleration = acceleration
acceleration = m/s^2 (acceleration; category unit)
acceleration angular = angular acceleration (angular acceleration)
acceleration linear = acceleration (acceleration)
acoustical energy = energy (energy)
acoustical intensity = heat flux density (heat flux density)
acoustical power = power (power)
acre = 4840 yard^2 (area)
ACTIVITY
becquerel = 1/s (derived unit)
Bq = becquerel
Ci = curie
curie = 37000000000 Bq
rutherford = 1000000 Bq
activity = frequency (frequency)
actus (Roman actus) = 116.4 foot (length)
Ad = angstrom (length)
admiralty knot = 6080 ft/hour (velocity)
admittance = conductance (conductance)
ADSORPTION
adsorption = mol/m^2 (category unit)
surface concentration = adsorption
adsorption = mol/m^2 (adsorption; category unit)
agate (typography agate) = 7.14285714285714E-02 in (length)
amount of magnetization = magnetic flux (magnetic flux)
AMOUNT OF SUBSTANCE
amount of substance = mol (category unit)
mol (mole) = mol (base unit)
mole = mol
amount of substance = mol (amount of substance; category unit)
amp = A (electric current)
ampere = A (electric current)
ampere turn = A*turn (magnetic force; derived unit)
amphora (Greek amphora) = 10.3 gallon (volume)
AMU (atomic mass unit) = 1.66044E-27 kg*approx (mass)
angstrom = .0000000001 m (length)
ANGULAR ACCELERATION
acceleration angular = angular acceleration
angular acceleration = rad/s^2 (category unit)
rotational acceleration = angular acceleration
angular acceleration = rad/s^2 (angular acceleration; category unit)
angular impulse = angular momentum (angular momentum)
ANGULAR MOMENTUM
angular impulse = angular momentum
angular momentum = N*m*s (category unit)
planck (Planck constant) = 6.626196E-34 J*s
angular momentum = N*m*s (angular momentum; category unit)
ANGULAR POWER
angular power = W*rad (category unit)
angular power = W*rad (angular power; category unit)
angular speed = angular velocity (angular velocity)
ANGULAR VELOCITY
angular speed = angular velocity
angular velocity = rad/s (category unit)
circular frequency = angular velocity
rotational frequency = angular velocity
rpm (revolutions per minute) = revolution/minute (derived unit)
velocity angular = angular velocity
angular velocity = rad/s (angular velocity; category unit)
annual = yr (time)
ap = replacement for "apoth"
ap = replacement for "apothecary"
ap dr = dram ap (mass)
ap dram = dram ap (mass)
ap gr = grain ap (mass)
ap grain = grain ap (mass)
ap lb = pound ap (mass)
ap oz = oz ap (mass)
ap pound = pound ap (mass)
ap scruple = scruple (mass)
apostilb = cd/pi*m^2 (luminance; derived unit)
apoth = "ap"
apothecary = "ap"
approx = ""
arc deg = degree (plane angle)
arc degree = degree (plane angle)
arc min = arc minute (plane angle)
arc minute (minute of arc) = 1.66666666666667E-02 arc degree (plane angle)
arc s (second of arc) = 1.66666666666667E-02 arc minute (plane angle)
arc sec = arc s (plane angle)
arc second = arc s (plane angle)
archin (Russian archin) = 28 in (length)
are = 100 m^2 (area)
AREA
a = are
acre = 4840 yard^2
are = 100 m^2
area = m^2 (category unit)
barn (abbreviation b) = 1E-28 m^2
cho (Japanese cho) = 2.45 acre
circular inch = .25 pi*in^2
circular mil = .00000025 pi*in^2
desyatina (Russian desyatina) = 2.7 acre
hectare = 100 are
homestead = .25 mile^2
linear displacement = area
permeability2 = area
rood = 40 rod^2
sabin = ft^2 (derived unit)
section (of land) = mile^2 (derived unit)
square = 100 ft^2
surface area = area
township = 36 mile^2
volume to length = area
area = m^2 (area; category unit)
area to volume = wave number (wave number)
arpentcan = 27.52 mile (length)
arpentlin = 191.835 ft (length)
arroba (Mexican arroba) = 26.367 pound (mass)
arroba oil = oil arroba (volume)
arroba wine = wine arroba (volume)
as (Roman as) = 12 uncia (mass)
assay ton = 29.167 gram (mass)
astronomical unit = 149597871000 m*approx (length)
At = ampere turn (magnetic force)
AT = assay ton (mass)
at wt = atomic weight (force)
atm = atmosphere (pressure)
atmosphere = 101325 Pa (pressure)
atomic mass = AMU (mass)
atomic mass unit = AMU (mass)
atomic weight = AMU*g (force; derived unit)
atto = 1E-18 (prefix)
au = astronomical unit (length)
autumn = 89.6666666666667 day*approx (time)
avdp = ""
avg = ""
avogadro (Avogadro's number) = 6.022169E+23 1/mol*approx (unknown units)
avoirdupois = ""
b = byte (data)
Babylonian shekel = 8.37 gram (mass)
bag = 94 pound (mass)
bakers dozen = 13
balthazar = 8 magnum (volume)
bar = 100000 Pa (pressure)
barie = .1 Pa (pressure)
barleycorn = .333333333333333 in (length)
barn (abbreviation b) = 1E-28 m^2 (area)
barrel = 31.5 gallon (volume)
barye = .1 Pa (pressure)
basis point = .01 percent
bath (Israeli bath) = 2.25 in^3 (volume)
baud = .1 byte/s (data flow rate)
bbl = petroleum barrel (volume)
bearing capacity mass basis = surface density (surface density)
becquerel = 1/s (activity; derived unit)
beer gallon (English beer gallon) = 282 in^3 (volume)
bending moment = energy (energy)
bending moment to length = force (force)
bes (Roman bes) = .48 pound (mass)
bev (billion electric volts) = 1000000000 electron volt (energy)
bi = 2 (prefix)
Biblical cubit = 18 in (length)
billion = 1000000000 (prefix)
biot = 10 A (electric current)
bit = bit (data; base unit)
blondel = cd/pi*m^2 (luminance; derived unit)
board foot = 144 in^3 (volume)
bolt (of cloth) = 40 yard (length)
boltzmann (Boltzmann constant) = 1.380622E-23 J/K (heat capacity)
bottom measure = .025 in (length)
bowling ball = 16 pound (mass)
bps (bits per second) = .1 byte/s (data flow rate)
Bq = becquerel (activity)
British = "UK"
BTU (International Table BTU) = 1055.05585262 J*approx (energy)
bu = bushel (volume)
buck = $ (currency)
bundle (of paper) = 2 ream
bushel (dry bushel) = 4 peck (volume)
byte = 8 bit (data)
c (centi) = .01 (prefix)
C = coulomb (electric charge)
c = speed of light (velocity)
cable = cable length (length)
cable length = 720 ft (length)
cal = calorie (energy)
calendar yr (calendar year) = 365 day (time)
caliber (gun barrel caliber) = .01 in (length)
caloric value mole basis = molar energy (molar energy)
calorie (International Table calorie) = 4.1868 J (energy)
calorific value mass basis = specific energy (specific energy)
calorific value volume basis = pressure (pressure)
Canadian gallon = .00454609 m^3 (volume)
candela = cd (luminous intensity)
candle power (spherical) = 12.556 lumen (luminous flux)
CAPACITANCE
abF = abfarad
abfarad = 1000000000 F
capacitance = F (category unit)
electric capacitance = capacitance
F = farad
farad = s/ohm (derived unit)
sF = statfarad
statfarad = 1.11265E-12 F
capacitance = F (capacitance; category unit)
capacity = volume (volume)
capture unit = wave number (wave number)
carat = carat troy (mass)
carat t = carat troy (mass)
carat troy (troy carat) = .0002 kg (mass)
case (of paper) = 4 bundle
catty (Chinese catty) = 1.33333333333333 pound (mass)
cc (cubic centimeters) = cm^3 (volume; derived unit)
cd (candela) = cd (luminous intensity; base unit)
celsius = dC (thermodynamic temperature)
cen = century (time)
cental (British cental) = 100 pound (mass)
centennial = century (time)
centesimal minute = .01 grade (plane angle)
centesimal second = .0001 grade (plane angle)
centi = .01 (prefix)
centigrade = dC (thermodynamic temperature)
centimilli = .00001 (prefix)
century = 100 yr (time)
Cesium frequency = Sc frequency (frequency)
cfs (cubic feet per second) = ft^3/s (volume flow rate; derived unit)
ch = chain (length)
chain (surveyors chain) = 4 rod (length)
char = byte (data)
character = byte (data)
charge = electric charge (electric charge)
charge density = electric charge density (electric charge density)
chemical potential = molar energy (molar energy)
chetvert (Russian chetvert) = 5.96 bushel (volume)
chin = catty (mass)
cho (Japanese cho) = 2.45 acre (area)
Ci = curie (activity)
circle = 2 pi*rad (plane angle)
circular frequency = angular velocity (angular velocity)
circular inch = .25 pi*in^2 (area)
circular mil = .00000025 pi*in^2 (area)
city block (informal) = 100 yard*approx (length)
cloth finger = 4.5 in (length)
cloth quarter = 9 in (length)
cm (centimilli) = .00001 (prefix)
COMPRESSIBILITY
compressibility = 1/Pascal (category unit)
specific fuel consumption volume basic = compressibility
stretchability = compressibility
twistability = compressibility
volume basis specific fuel consumption = compressibility
compressibility = 1/Pascal (compressibility; category unit)
concentration (of amount of substance) = mol/m^3 (concentration; category unit)
CONCENTRATION
concentration (of amount of substance) = mol/m^3 (category unit)
concentration mole to volume = concentration
ionic strength = concentration
mole to volume concentration = concentration
solubility = concentration
concentration mass to mass = dimensionless unit
concentration mass to volume = mass density (mass density)
concentration mole to volume = concentration (concentration)
CONCENTRATION RATE
concentration rate = mol/m^3*s (category unit)
reaction rate = concentration rate
concentration rate = mol/m^3*s (concentration rate; category unit)
concentration volume to mole = molar volume (molar volume)
concentration volume to volume = dimensionless unit
CONDUCTANCE
abmho = 1000000000 mho
admittance = conductance
conductance = S (category unit)
mho = siemens
modulus of admittance = conductance
S = siemens
siemens = A/V (derived unit)
susceptance = conductance
conductance = S (conductance; category unit)
CONDUCTIVITY
conductivity = S/m (category unit)
specific conductance = conductivity
volume conductivity = conductivity
conductivity = S/m (conductivity; category unit)
conversion change rate = mole flow rate (mole flow rate)
cooling duty = dimensionless unit
coomb = 4 bushel (volume)
cord (of wood) = 128 ft^3 (volume)
cord foot (of wood) = 16 ft^3 (volume)
corrosion rate = velocity (velocity)
cotton bale (US) = 500 pound (mass)
cotton bale Egypt = 750 pound (mass)
coul = coulomb (electric charge)
coulomb = A*s (electric charge; derived unit)
cps (characters per second) = byte/s (data flow rate; derived unit)
crith = .0906 gram (mass)
ct = carat troy (mass)
cu = cup (volume)
cubed = "^3"
cubit = Biblical cubit (length)
cup = .5 pint (volume)
curie = 37000000000 Bq (activity)
CURRENCY
$ (US dollar) = $ (base unit)
buck = $
currency = $ (category unit)
dollar = $
tick = .03125 $
US dollar = $
currency = $ (currency; category unit)
current = electric current (electric current)
CURRENT DENSITY
current density = A/m^2 (category unit)
electric current density = current density
current density = A/m^2 (current density; category unit)
curvature of a curve = wave number (wave number)
cwt = short hundredweight (mass)
d (deci) = .1 (prefix)
D (deka) = 10 (prefix)
d = day (time)
da (deka) = 10 (prefix)
dalton = AMU (mass)
damping viscosity = mass flow rate (mass flow rate)
DATA
b = byte
bit = bit (base unit)
byte = 8 bit
char = byte
character = byte
data = byte (category unit)
gb = gigabyte
gigabyte = 1024 megabyte
kb = kilobyte
kilobyte = 1024 byte
mb = megabyte
megabyte = 1024 kilobyte
nibble = .5 byte
tb = terabyte
terabyte = 1024 gigabyte
data = byte (data; category unit)
DATA FLOW RATE
baud = .1 byte/s
bps (bits per second) = .1 byte/s
cps (characters per second) = byte/s (derived unit)
data flow rate = byte/s (category unit)
data flow rate = byte/s (data flow rate; category unit)
day = 24 hour (time)
dC (Celsius degree) = K (thermodynamic temperature)
deadweight ton = long ton (mass)
dec = 10 (prefix)
decade = 10 yr (time)
deci = .1 (prefix)
decillion = 1E+33 (prefix)
decimilli = .0001 (prefix)
deg = degree (plane angle)
degree (Pi rad / 180) = 1.74532925199433E-02 rad (plane angle)
deka = 10 (prefix)
demi = .5 (prefix)
denarius (Roman denarius) = 60 grain (mass)
density = mass density (mass density)
DENSITY OF STATES
density of states = 1/J*m^3 (category unit)
density of states = 1/J*m^3 (density of states; category unit)
DENSITY OF VIBRATIONAL MODES
density of vibrational modes = s/m^3 (category unit)
density of vibrational modes = s/m^3 (density of vibrational modes; category unit)
depth = length (length)
desyatina (Russian desyatina) = 2.7 acre (area)
dF (Fahrenheit degree) = .555555555555556 K (thermodynamic temperature)
dialectric permittivity = permittivity (permittivity)
dialectric polarization = electric flux density (electric flux density)
dialectric strength = permittivity (permittivity)
diffusivity = kinematic viscosity (kinematic viscosity)
digitus (Roman digitus) = .73 in (length)
DIMENSIONLESS UNIT
% (percent) = .01
bakers dozen = 13
basis point = .01 percent
bundle (of paper) = 2 ream
case (of paper) = 4 bundle
concentration mass to mass = dimensionless unit
concentration volume to volume = dimensionless unit
cooling duty = dimensionless unit
dimensionless unit = 1 (category unit)
dozen = 12
dry = 1.16364718614719 approx
googol = 1E+100
great gross = 12 gross
gross = 12 dozen
karat = 4.16666666666667E-02
length to length = dimensionless unit
mass to mass concentration = dimensionless unit
percent = .01
pi = 3.14159265358979
proof = .005
quire (of paper) = 25
ream (of paper) = 20 quire
score = 20
scotch = 86 proof
UK (British) = 1.000002
UK caliber (British caliber) = .001
volume to volume concentration = dimensionless unit
dimensionless unit = 1 (category unit)
dinar (Arabian dinar) = 4.2 gram (mass)
diopter (lens power) = 1/m (wave number; derived unit)
displacement = electric flux density (electric flux density)
displacement ton = 35 ft^3 (volume)
diurnal = day (time)
dK = K (thermodynamic temperature)
dm (decimilli) = .0001 (prefix)
dollar = $ (currency)
doppelzentner = 100 kg (mass)
DOSE EQUIV
rem = .01 Sv
sievert = m^2/s^2 (derived unit)
Sv = sievert
dose equiv = specific energy (specific energy)
double = 2 (prefix)
dozen = 12
dR (Rankine degree) = .555555555555556 K (thermodynamic temperature)
dr = dram (mass)
dr ap = dram ap (mass)
dr fl = dram fluid (volume)
dr fluid = dram fluid (volume)
dr t = dram troy (mass)
drachma2 (Greek drachma) = 4.2923 gram (mass)
draft = pressure (pressure)
dram (avoirdupois dram) = .0625 oz (mass)
dram ap (apothecary dram) = 3 scruple (mass)
dram fl = dram fluid (volume)
dram fluid (fluid dram) = .125 oz fluid (volume)
dram troy (troy dram) = 60 grain (mass)
dRe (Reaumur degree) = 1.25 K (thermodynamic temperature)
drop = .03 cm^3 (volume)
dry = 1.16364718614719 approx
dry barrel = 7056 in^3 (volume)
dry gallon = 268.8025 in^3*approx (volume)
dry pint = .5 dry quart (volume)
dry quart = .25 dry gallon (volume)
duodec = 12 (prefix)
dw t = pennyweight troy (mass)
dyn = dyne (force)
DYNAMIC VISCOSITY
absolute viscosity = dynamic viscosity
dynamic viscosity = Pa*s (category unit)
flow rate to length mass basis = dynamic viscosity
mass basis flow rate to length = dynamic viscosity
P = poise
poise = gram/cm*s (derived unit)
reyn = lbf*s/in^2 (derived unit)
viscosity absolute = dynamic viscosity
viscosity dynamic = dynamic viscosity
dynamic viscosity = Pa*s (dynamic viscosity; category unit)
dyne (cm*gm/s^2) = .00001 N (force)
E (exa) = 1E+18 (prefix)
e = elementary charge (electric charge)
earth mass = 5.983E+24 kg*approx (mass)
earth to moon (mean distance earth to moon) = 238860 mile (length)
EEC therm (European Economic Community therm) = 105506000 J (energy)
eighth = .125 (prefix)
ELASTANCE
elastance = 1/F (category unit)
elastance = 1/F (elastance; category unit)
elasticity = surface tension (surface tension)
electric capacitance = capacitance (capacitance)
ELECTRIC CHARGE
abC = abcoulomb
abcoulomb = 10 C
C = coulomb
charge = electric charge
coul = coulomb
coulomb = A*s (derived unit)
e = elementary charge
electric charge = C (category unit)
electric flux = electric charge
electric induction flux = electric charge
electronic charge = elementary charge
elementary charge = 1.6021917E-19 C
flux of displacement = electric charge
franklin current = statcoulomb
quantity of electricity = electric charge
sC = statcoulomb
statcoulomb = .000000000333564 C
electric charge = C (electric charge; category unit)
ELECTRIC CHARGE DENSITY
charge density = electric charge density
electric charge density = C/m^3 (category unit)
volume density of charge = electric charge density
electric charge density = C/m^3 (electric charge density; category unit)
ELECTRIC CURRENT
A (ampere) = A (base unit)
abA = abampere
abamp = abampere
abampere = 10 A
amp = A
ampere = A
biot = 10 A
current = electric current
electric current = A (category unit)
intl ampere ampere (international as of 1948) = .999835 A
magnetic potential difference = electric current
sA = statampere
statampere = .000000000333564 A
electric current = A (electric current; category unit)
electric current density = current density (current density)
ELECTRIC DIPOLE MOMENT
electric dipole moment = C*m (category unit)
electric dipole moment = C*m (electric dipole moment; category unit)
electric displacement = electric flux density (electric flux density)
electric field (constant) = 8.8542E-12 F/m (permittivity)
ELECTRIC FIELD STRENGTH
electric field strength = V/m (category unit)
electric intensity = electric field strength
electric field strength = V/m (electric field strength; category unit)
electric flux = electric charge (electric charge)
ELECTRIC FLUX DENSITY
dialectric polarization = electric flux density
displacement = electric flux density
electric displacement = electric flux density
electric flux density = C/m^2 (category unit)
electric polarization = electric flux density
surface density of charge = electric flux density
electric flux density = C/m^2 (electric flux density; category unit)
electric inductance = inductance (inductance)
electric induction flux = electric charge (electric charge)
electric intensity = electric field strength (electric field strength)
ELECTRIC MOBILITY
electric mobility = m^2/V*s (category unit)
mobility = electric mobility
electric mobility = m^2/V*s (electric mobility; category unit)
electric polarization = electric flux density (electric flux density)
ELECTRIC POTENTIAL
abV = abvolt
abvolt = .00000001 V
electric potential = V (category unit)
electromotive force = electric potential
induced emf = electric potential
potential = electric potential
potential difference = electric potential
statvolt = 299.7925 V
sV = statvolt
V = volt
volt = W/A (derived unit)
voltage = electric potential
voltage potential = electric potential
electric potential = V (electric potential; category unit)
ELECTRIC RESISTANCE
abohm = .000000001 ohm
electric resistance = ohm (category unit)
impedance = electric resistance
modulus of impedance = electric resistance
ohm = V/A (derived unit)
omega = ohm
reactance = electric resistance
resistance = electric resistance
statohm = 898755400000 ohm
electric resistance = ohm (electric resistance; category unit)
electrical power = power (power)
electrochemical potential = molar energy (molar energy)
ELECTROMAGNETIC MOMENT
electromagnetic moment = A*m^2 (category unit)
magnetic moment = electromagnetic moment
electromagnetic moment = A*m^2 (electromagnetic moment; category unit)
electromotive force = electric potential (electric potential)
electron mass (electron rest mass) = 9.109558E-31 kg (mass)
electron volt = 1.6021917E-19 J*approx (energy)
electronic charge = elementary charge (electric charge)
elementary charge = 1.6021917E-19 C (electric charge)
ell = 45 in (length)
em (typography em) = point (length)
emitted radiant flux = heat flux density (heat flux density)
en (typography en) = .5 em (length)
ENERGY
acoustical energy = energy
bending moment = energy
bev (billion electric volts) = 1000000000 electron volt
BTU (International Table BTU) = 1055.05585262 J*approx
cal = calorie
calorie (International Table calorie) = 4.1868 J
EEC therm (European Economic Community therm) = 105506000 J
electron volt = 1.6021917E-19 J*approx
energy = J (category unit)
erg = .0000001 J
eV = electron volt
frigorie = 1000 calorie
heat = energy
impact energy = energy
J = joule
joule = N*m (derived unit)
moment of force = energy
quantity of heat = energy
radiant energy = energy
rydberg = 1.36054 electron volt
surface energy = energy
therm = 100000 BTU
thermie = 1000000 calorie
thermochemical calorie = 4.184 J
torque = energy
UK thermal unit = BTU
Wh (watt hour) = W*hour (derived unit)
work = energy
WWII = 3.5 megaton*TNT
energy = J (energy; category unit)
energy density = pressure (pressure)
engineers chain = 100 ft (length)
engineers link = ft (length)
English carat = .000205 kg (mass)
ennial = yr (time)
enthalpy mass basis = specific energy (specific energy)
enthalpy mole basis = molar energy (molar energy)
entropy = heat capacity (heat capacity)
ephah (Israeli ephah) = 10 omer (volume)
epsilon0 = electric field (permittivity)
equiv = replacement for "equivalent"
equiv footcandle (equivalent footcandle) = lm/pi*ft^2 (illuminance; derived unit)
equiv lux (equivalent lux) = lx/pi (illuminance; derived unit)
equiv phot (equivalent phot) = cd/pi*cm^2 (luminance; derived unit)
equivalent = "equiv"
erg = .0000001 J (energy)
eV = electron volt (energy)
exa = 1E+18 (prefix)
exact = ""
f (femto) = .000000000000001 (prefix)
F = farad (capacitance)
fahrenheit = dF (thermodynamic temperature)
farad = s/ohm (capacitance; derived unit)
faraday (Faraday constant) = 96486.7 C/mol (unknown units)
fath = fathom (length)
fathom = 6 ft (length)
fbm = board foot (volume)
fc = footcandle (illuminance)
Fdy = faraday (unknown units)
feet = "foot"
femto = .000000000000001 (prefix)
fermi = .000000000000001 m (length)
fifth = .8 quart (volume)
finger = .875 in (length)
firkin = 9 gallon (volume)
fiscal yr (fiscal year) = 360 day (time)
fl = replacement for "liq"
fl = replacement for "liquid"
fl dr = dram fluid (volume)
fl dram = dram fluid (volume)
fl head = length (length)
fl oz = oz fluid (volume)
flam = footlambert (luminance)
flow rate area mass basis (flow rate/area mass basis) = kg*s/m^2 (flow rate area mass basis; category unit)
FLOW RATE AREA MASS BASIS
flow rate area mass basis (flow rate/area mass basis) = kg*s/m^2 (category unit)
mass basis flow rate to area = flow rate area mass basis
flow rate mass basis = mass flow rate (mass flow rate)
flow rate mole basis = mole flow rate (mole flow rate)
flow rate to area volume basis = velocity (velocity)
flow rate to length mass basis = dynamic viscosity (dynamic viscosity)
flow rate to length volume basis = kinematic viscosity (kinematic viscosity)
flow rate volume basis = volume flow rate (volume flow rate)
fluid dr = dram fluid (volume)
fluid dram = dram fluid (volume)
fluid oz = oz fluid (volume)
FLUIDITY
fluidity = m*s/kg (category unit)
rhe = 10 m^2/N*s
fluidity = m*s/kg (fluidity; category unit)
flux linkage = magnetic flux (magnetic flux)
flux of displacement = electric charge (electric charge)
foot (" foot ") = replacement for "'"
foot = 12 in (length)
foot = replacement for "feet"
football field = 100 yard (length)
footcandle = lm/ft^2 (illuminance; derived unit)
footlambert = cd/pi*ft^2 (luminance; derived unit)
FORCE
at wt = atomic weight
atomic weight = AMU*g (derived unit)
bending moment to length = force
dyn = dyne
dyne (cm*gm/s^2) = .00001 N
force = N (category unit)
gf = gram force
gram force = gram*g (derived unit)
kip (kilopound force) = 1000 pound*g
lb force = pound force
lbf = pound force
N = newton
newton = kg*m/s^2 (derived unit)
Nt = newton
pdl = poundal
pound force = pound*g (derived unit)
poundal = ft*pound/s^2 (derived unit)
sthene = 1000 N
ton force = metric ton*g (derived unit)
weight = force
force = N (force; category unit)
fortnight = 2 week (time)
fps (feet per second) = ft/s (velocity; derived unit)
franklin current = statcoulomb (electric charge)
freefall = g (acceleration)
freight ton = 40 ft^3 (volume)
FREQUENCY
activity = frequency
Cesium frequency = Sc frequency
frequency = 1/s (category unit)
hertz = 1/s (derived unit)
Hz = hertz
pitch = frequency
radioactivity = frequency
Sc frequency (cesium atom frequency) = 9192631770 1/s
frequency = 1/s (frequency; category unit)
frigorie = 1000 calorie (energy)
ft = foot (length)
fuel consumption = length (length)
FUEL EFFICIENCY
fuel efficiency = 1/m^2 (category unit)
length to volume = fuel efficiency
mpg (miles per gallon) = mile/gallon (derived unit)
fuel efficiency = 1/m^2 (fuel efficiency; category unit)
funt (Russian funt) = .9 pound (mass)
fur = furlong (length)
furlong (surveyors furlong) = 10 chain (length)
fy = fiscal yr (time)
G (giga) = 1000000000 (prefix)
g (gravitational acceleration) = 9.80665 m/s^2 (acceleration)
G = gauss (magnetic flux density)
gal = gallon (volume)
galileo = .01 m/s^2 (acceleration)
gallon = 231 in^3 (volume)
gamma = .000000001 T (magnetic flux density)
gas = universal gas (molar heat capacity)
gauss = .0001 T (magnetic flux density)
gb = gigabyte (data)
geodetic foot = survey foot (length)
geographical mile = nautical mile (length)
gf = gram force (force)
giga = 1000000000 (prefix)
gigabyte = 1024 megabyte (data)
gilbert = .795775 ampere turn (magnetic force)
gill = .5 cup (volume)
gm = gram (mass)
googol = 1E+100
googol = 1E+100 (prefix)
gpm (gallons per minute) = gal/min (volume flow rate; derived unit)
gr = grain (mass)
gr ap = grain ap (mass)
gr t = grain troy (mass)
grad = grade (plane angle)
grade = .015707963267949 rad (plane angle)
gradus (Roman gradus) = 2.43 foot (length)
grain (avoirdupois grain) = 1.42857142857143E-04 pound (mass)
grain ap (apothecary grain) = grain (mass)
grain troy (troy grain) = grain (mass)
gram = .001 kg (mass)
gram force = gram*g (force; derived unit)
gravitation (constant) = .00000000006664 N*m^2/kg^2 (unknown units)
gravitational acceleration = g (acceleration)
gray = J/kg (absorbed dose; derived unit)
great gross = 12 gross
Greek cubit = 18.22 in (length)
Greek fathom = 4 Greek cubit (length)
Greek obolos = 715.38 milligram (mass)
Greek palm = .333333333333333 Greek span (length)
Greek span = .5 Greek cubit (length)
gross = 12 dozen
gross cwt = long hundredweight (mass)
gross hundredweight = long hundredweight (mass)
gross ton = long ton (mass)
gunters chain = chain (length)
gunters link = link (length)
Gy = gray (absorbed dose)
h (hecto) = 100 (prefix)
H = henry (inductance)
h = hour (time)
H20 density (water weight density) = .0885472440945 kg/m^2*s^2 (weight density)
half = .5 (prefix)
hand = 4 in (length)
hd = hogshead (volume)
heat = energy (energy)
HEAT CAPACITY
boltzmann (Boltzmann constant) = 1.380622E-23 J/K
entropy = heat capacity
heat capacity = J/K (category unit)
k = boltzmann
heat capacity = J/K (heat capacity; category unit)
heat conductivity = thermal conductivity (thermal conductivity)
heat flow rate = power (power)
heat flux = heat flux density (heat flux density)
HEAT FLUX DENSITY
acoustical intensity = heat flux density
emitted radiant flux = heat flux density
heat flux = heat flux density
heat flux density = W/m^2 (category unit)
irradiance = heat flux density
power to area = heat flux density
radiant exitance = heat flux density
radiant flux received = heat flux density
sound intensity = heat flux density
thermal flux = heat flux density
heat flux density = W/m^2 (heat flux density; category unit)
HEAT RELEASE RATE
heat release rate = W/m^3 (category unit)
mixing power = heat release rate
heat release rate = W/m^3 (heat release rate; category unit)
HEAT TRANSFER COEFFICIENT
heat transfer coefficient = W/m^2*K (category unit)
heat transfer coefficient = W/m^2*K (heat transfer coefficient; category unit)
hectare = 100 are (area)
hecto = 100 (prefix)
hectokilo = 100000 (prefix)
hefner candle = .92 cd (luminous intensity)
height = length (length)
hekat (Israeli hekat) = 291 in^3 (volume)
henry = Wb/A (inductance; derived unit)
hertz = 1/s (frequency; derived unit)
Hg weight density = 133322.368421 kg/m^2*s^2 (weight density)
hhd = hogshead (volume)
hk (hectokilo) = 100000 (prefix)
HK = hefner candle (luminous intensity)
hogshead = 2 barrel (volume)
homestead = .25 mile^2 (area)
horsepower = 550 ft*pound*g/sec (power)
hour = 60 minute (time)
hp = horsepower (power)
hr = hour (time)
hundred = 100 (prefix)
hundredweight = short hundredweight (mass)
hyl = gf*s^2/m (mass; derived unit)
Hz = hertz (frequency)
ies ("ies ") = "y "
ILLUMINANCE
equiv footcandle (equivalent footcandle) = lm/pi*ft^2 (derived unit)
equiv lux (equivalent lux) = lx/pi (derived unit)
fc = footcandle
footcandle = lm/ft^2 (derived unit)
illuminance = lx (category unit)
illumination = illuminance
luminous exitance = illuminance
lux = lm/m^2 (derived unit)
lx = lux
nox = .001 lux
illuminance = lx (illuminance; category unit)
illumination = illuminance (illuminance)
imp ("imp ") = "UK "
impact energy = energy (energy)
impedance = electric resistance (electric resistance)
imperial = "UK"
impulse = momentum (momentum)
in = inch (length)
inch (" inch ") = replacement for """
inch = .0254 m (length)
inch = replacement for "inches"
inches = "inch"
induced emf = electric potential (electric potential)
INDUCTANCE
abH = abhenry
abhenry = .000000001 H
electric inductance = inductance
H = henry
henry = Wb/A (derived unit)
inductance = H (category unit)
mutual inductance = inductance
permeance = inductance
self inductance = inductance
sH = stathenry
stathenry = 898755400000 H
inductance = H (inductance; category unit)
intensity of force = surface tension (surface tension)
interfacial tension = surface tension (surface tension)
international = "intl"
intl = replacement for "international"
intl ampere ampere (international as of 1948) = .999835 A (electric current)
intl foot = foot (length)
intl mile = mile (length)
intl yard = yard (length)
IONIC CONDUCTIVITY
ionic conductivity = S*m^2/mol (category unit)
ionic conductivity = S*m^2/mol (ionic conductivity; category unit)
ionic strength = concentration (concentration)
ips (inches per second) = in/s (velocity; derived unit)
irradiance = heat flux density (heat flux density)
Israeli cubit = 21.8 inch (length)
Israeli shekel mass = 14.1 gram (mass)
J = joule (energy)
jeroboam = .8 gallon (volume)
jigger = 1.5 oz fluid (volume)
joule = N*m (energy; derived unit)
K (Kelvin degree) = K (thermodynamic temperature; base unit)
k (kilo) = 1000 (prefix)
k = boltzmann (heat capacity)
karat = 4.16666666666667E-02
kayser = 100 1/m (wave number)
kb = kilobyte (data)
kelvin = K (thermodynamic temperature)
ken (Japanese ken) = 6.95 foot (length)
key = kg (mass)
kg (kilogram) = kg (mass; base unit)
kilderkin = 18 gallon (volume)
kilo = 1000 (prefix)
kilobyte = 1024 byte (data)
kin (Japanese kin) = 1.323 pound (mass)
KINEMATIC VISCOSITY
diffusivity = kinematic viscosity
flow rate to length volume basis = kinematic viscosity
kinematic viscosity = m^2/s (category unit)
St = stoke
stoke = .0001 m^2/s
thermal diffusion = kinematic viscosity
transmissivity = kinematic viscosity
viscosity kinematic = kinematic viscosity
volume basis flow rate to length = kinematic viscosity
kinematic viscosity = m^2/s (kinematic viscosity; category unit)
kip (kilopound force) = 1000 pound*g (force)
knot (nautical miles per hour) = nmi/hour (velocity; derived unit)
koku (Japanese koku) = 47.6 gallon (volume)
kph (kilometers per hour) = km/hour (velocity; derived unit)
kwan (Japanese kwan) = 8.27 pound (mass)
L = avogadro (unknown units)
l = liter (volume)
lam = lambert (luminance)
lambert = cd/pi*cm^2 (luminance; derived unit)
land league = league (length)
land mile = mile (length)
langley = calorie/cm^2 (surface tension; derived unit)
last = 80 bushel (volume)
lb = pound (mass)
lb ap = pound ap (mass)
lb force = pound force (force)
lb t = pound troy (mass)
lb troy = pound troy (mass)
lbf = pound force (force)
league = 3 mile (length)
leap yr (leap year) = 366 day (time)
LENGTH
actus (Roman actus) = 116.4 foot
Ad = angstrom
agate (typography agate) = 7.14285714285714E-02 in
angstrom = .0000000001 m
archin (Russian archin) = 28 in
arpentcan = 27.52 mile
arpentlin = 191.835 ft
astronomical unit = 149597871000 m*approx
au = astronomical unit
barleycorn = .333333333333333 in
Biblical cubit = 18 in
bolt (of cloth) = 40 yard
bottom measure = .025 in
cable = cable length
cable length = 720 ft
caliber (gun barrel caliber) = .01 in
ch = chain
chain (surveyors chain) = 4 rod
city block (informal) = 100 yard*approx
cloth finger = 4.5 in
cloth quarter = 9 in
cubit = Biblical cubit
depth = length
digitus (Roman digitus) = .73 in
earth to moon (mean distance earth to moon) = 238860 mile
ell = 45 in
em (typography em) = point
en (typography en) = .5 em
engineers chain = 100 ft
engineers link = ft
fath = fathom
fathom = 6 ft
fermi = .000000000000001 m
finger = .875 in
fl head = length
foot = 12 in
football field = 100 yard
ft = foot
fuel consumption = length
fur = furlong
furlong (surveyors furlong) = 10 chain
geodetic foot = survey foot
geographical mile = nautical mile
gradus (Roman gradus) = 2.43 foot
Greek cubit = 18.22 in
Greek fathom = 4 Greek cubit
Greek palm = .333333333333333 Greek span
Greek span = .5 Greek cubit
gunters chain = chain
gunters link = link
hand = 4 in
height = length
in = inch
inch = .0254 m
intl foot = foot
intl mile = mile
intl yard = yard
Israeli cubit = 21.8 inch
ken (Japanese ken) = 6.95 foot
land league = league
land mile = mile
league = 3 mile
length = m (category unit)
li (Chinese li) = 705 yard
light yr (light year) = speed of light*yr (derived unit)
line = 8.33333333333333E-02 in
link (surveyors link) = 7.92 in
lyr = light yr
m (meter) = m (base unit)
marathon = 46145 yard
marine league = nautical league
meter = m
metre = m
mi = mile
micron = .000001 m
mil = .001 in
mile = 5280 foot
nail (cloth nail) = .0625 yard
naut mi = nautical mile
nautical league = 3 nautical mile
nautical mile = 1852 m
naval shot = 15 fathom
nmi = nautical mile
nmile = nautical mile
pace = 30 in
palm = 3 in
parasang = 3.5 mile
parsec = au*rad/arc sec (derived unit)
pc = parsec
perch = rod
pica (typography pica) = .166666666666667 in
point (typography point) = .013837 in
pole = rod
rd = rod
ri (Japanese ri) = 2.44 mile
rod (surveyors rod) = 25 link
Roman cubit = 17.5 in
Roman foot = .971 foot
Roman mile = 5000 Roman foot
rope = 20 ft
sazhen (Russian sazhen) = 6.9 foot
shaku (Japanese shaku) = 11.93 in
skein = 120 yd
soccer field = 100 yard
span (cloth span) = 9 in
spindle = 14400 yard
stadia (Greek stadia) = 400 Greek cubit
stadium (Roman stadium) = 202 yard
statute league = league
statute mile = mile
sun (Japanese sun) = 1.193 in
survey foot = .304800609601219 m
surveyors chain = chain
surveyors furlong = furlong
surveyors link = link
surveyors rod = rod
U = micron
UK mile (British mile) = 1609.34721869 m
vara (Mexican vara) = 32.99 in
verst (Russian verst) = 3500 foot
wavelength = length
width = length
yard = 3 ft
yd = yard
length = m (length; category unit)
length to length = dimensionless unit
length to volume = fuel efficiency (fuel efficiency)
lens power = wave number (wave number)
li (Chinese li) = 705 yard (length)
liang = tael (mass)
libra (Roman libra) = as (mass)
librae = libra (mass)
LIGHT EXPOSURE
light exposure = lx*s (category unit)
light exposure = lx*s (light exposure; category unit)
light yr (light year) = speed of light*yr (length; derived unit)
line = 8.33333333333333E-02 in (length)
linear acceleration = acceleration (acceleration)
linear current density = magnetic field strength (magnetic field strength)
linear displacement = area (area)
linear electric current density = magnetic field strength (magnetic field strength)
linear impulse = momentum (momentum)
linear momentum = momentum (momentum)
linear power = power (power)
linear speed = velocity (velocity)
linear velocity = velocity (velocity)
link (surveyors link) = 7.92 in (length)
liq = "fl"
liquid = "fl"
liter = .001 m^3 (volume)
livre (French livre) = 490 gram (mass)
lm = lumen (luminous flux)
load = 1.9 yd^3 (volume)
long hundredweight (avoirdupois long hundredweight) = 112 pound (mass)
long quarter = 28 pound (mass)
long ton (avoirdupois long ton) = 2240 pound (mass)
loschmidt (Loschmidt's constant) = 2.68719E+25 1/m^3 (number concentration)
lumen = cd*sr (luminous flux; derived unit)
LUMINANCE
apostilb = cd/pi*m^2 (derived unit)
blondel = cd/pi*m^2 (derived unit)
equiv phot (equivalent phot) = cd/pi*cm^2 (derived unit)
flam = footlambert
footlambert = cd/pi*ft^2 (derived unit)
lam = lambert
lambert = cd/pi*cm^2 (derived unit)
luminance = cd/m^2 (category unit)
nit = cd/m^2 (derived unit)
ph = phot
phot = cd/cm^2 (derived unit)
sb = stilb
skot = .001 apostilb
stilb = cd/cm^2 (derived unit)
luminance = cd/m^2 (luminance; category unit)
LUMINOUS EFFICACY
luminous efficacy = lm/W (category unit)
luminous efficacy = lm/W (luminous efficacy; category unit)
LUMINOUS ENERGY
luminous energy = lm*s (category unit)
luminous energy = lm*s (luminous energy; category unit)
luminous exitance = illuminance (illuminance)
LUMINOUS FLUX
candle power (spherical) = 12.556 lumen
lm = lumen
lumen = cd*sr (derived unit)
luminous flux = lm (category unit)
luminous flux = lm (luminous flux; category unit)
LUMINOUS INTENSITY
candela = cd
cd (candela) = cd (base unit)
hefner candle = .92 cd
HK = hefner candle
luminous intensity = cd (category unit)
luminous intensity = cd (luminous intensity; category unit)
lunation = synodic month (time)
lusec = .000001 torr*m^3/s (power)
lux = lm/m^2 (illuminance; derived unit)
lx = lux (illuminance)
lyr = light yr (length)
M (mega) = 1000000 (prefix)
m (meter) = m (length; base unit)
m (milli) = .001 (prefix)
ma (myria) = 10000 (prefix)
Ma = mach (velocity)
mach (Mach at sea level & 32 dF) = 331.46 m/s (velocity)
MAGNETIC DIPOLE MOMENT
magnetic dipole moment = J*m/A (category unit)
magnetic dipole moment = J*m/A (magnetic dipole moment; category unit)
magnetic field (constant) = .0000004 pi*H/m (permeability)
MAGNETIC FIELD STRENGTH
linear current density = magnetic field strength
linear electric current density = magnetic field strength
magnetic field strength = A/m (category unit)
magnetic intensity = magnetic field strength
magnetization = magnetic field strength
Oe = oersted
oersted = 79.5774715459477 A/m
magnetic field strength = A/m (magnetic field strength; category unit)
MAGNETIC FLUX
amount of magnetization = magnetic flux
flux linkage = magnetic flux
magnetic flux = Wb (category unit)
magnetic mass = magnetic flux
maxwell = .00000001 Wb
Mx = maxwell
Wb = weber
weber = V*s (derived unit)
magnetic flux = Wb (magnetic flux; category unit)
MAGNETIC FLUX DENSITY
G = gauss
gamma = .000000001 T
gauss = .0001 T
magnetic flux density = T (category unit)
magnetic induction flux = magnetic flux density
magnetic polarization = magnetic flux density
T = tesla
tesla = kg/A*s^2 (derived unit)
magnetic flux density = T (magnetic flux density; category unit)
MAGNETIC FORCE
ampere turn = A*turn (derived unit)
At = ampere turn
gilbert = .795775 ampere turn
magnetic force = ampere turn (category unit)
magnetic potential = magnetic force
magnetomotive force = magnetic force
magnetic force = ampere turn (magnetic force; category unit)
magnetic induction flux = magnetic flux density (magnetic flux density)
magnetic intensity = magnetic field strength (magnetic field strength)
magnetic mass = magnetic flux (magnetic flux)
magnetic moment = electromagnetic moment (electromagnetic moment)
magnetic permeability = permeability (permeability)
magnetic polarization = magnetic flux density (magnetic flux density)
magnetic potential = magnetic force (magnetic force)
magnetic potential difference = electric current (electric current)
MAGNETIC VECTOR POTENTIAL
magnetic vector potential = Wb/m (category unit)
magnetic vector potential = Wb/m (magnetic vector potential; category unit)
magnetization = magnetic field strength (magnetic field strength)
magnetomotive force = magnetic force (magnetic force)
magnum = 2 quart (volume)
marathon = 46145 yard (length)
marine league = nautical league (length)
MASS
AMU (atomic mass unit) = 1.66044E-27 kg*approx
ap dr = dram ap
ap dram = dram ap
ap gr = grain ap
ap grain = grain ap
ap lb = pound ap
ap oz = oz ap
ap pound = pound ap
ap scruple = scruple
arroba (Mexican arroba) = 26.367 pound
as (Roman as) = 12 uncia
assay ton = 29.167 gram
AT = assay ton
atomic mass = AMU
atomic mass unit = AMU
Babylonian shekel = 8.37 gram
bag = 94 pound
bes (Roman bes) = .48 pound
bowling ball = 16 pound
carat = carat troy
carat t = carat troy
carat troy (troy carat) = .0002 kg
catty (Chinese catty) = 1.33333333333333 pound
cental (British cental) = 100 pound
chin = catty
cotton bale (US) = 500 pound
cotton bale Egypt = 750 pound
crith = .0906 gram
ct = carat troy
cwt = short hundredweight
dalton = AMU
deadweight ton = long ton
denarius (Roman denarius) = 60 grain
dinar (Arabian dinar) = 4.2 gram
doppelzentner = 100 kg
dr = dram
dr ap = dram ap
dr t = dram troy
drachma2 (Greek drachma) = 4.2923 gram
dram (avoirdupois dram) = .0625 oz
dram ap (apothecary dram) = 3 scruple
dram troy (troy dram) = 60 grain
dw t = pennyweight troy
earth mass = 5.983E+24 kg*approx
electron mass (electron rest mass) = 9.109558E-31 kg
English carat = .000205 kg
funt (Russian funt) = .9 pound
gm = gram
gr = grain
gr ap = grain ap
gr t = grain troy
grain (avoirdupois grain) = 1.42857142857143E-04 pound
grain ap (apothecary grain) = grain
grain troy (troy grain) = grain
gram = .001 kg
Greek obolos = 715.38 milligram
gross cwt = long hundredweight
gross hundredweight = long hundredweight
gross ton = long ton
hundredweight = short hundredweight
hyl = gf*s^2/m (derived unit)
Israeli shekel mass = 14.1 gram
key = kg
kg (kilogram) = kg (base unit)
kin (Japanese kin) = 1.323 pound
kwan (Japanese kwan) = 8.27 pound
lb = pound
lb ap = pound ap
lb t = pound troy
lb troy = pound troy
liang = tael
libra (Roman libra) = as
librae = libra
livre (French livre) = 490 gram
long hundredweight (avoirdupois long hundredweight) = 112 pound
long quarter = 28 pound
long ton (avoirdupois long ton) = 2240 pound
mass = kg (category unit)
me = electron mass
metric ton = 1000 kg
Mexican libra = 1.015 pound
mg (milligram) = milligram
mina (Greek mina) = .9463 pound
mite (English mite) = .05 grain
mn = neutron mass
mp = proton mass
net hundredweight = short hundredweight
net ton = short ton
neutron mass (neutron rest mass) = 1.67492E-27 kg
obol (Greek obol) = 11.2 grain
oz (avoirdupois ounce) = .0625 pound
oz ap (apothecary ounce) = 8 dram ap
oz t = oz troy
oz troy (troy ounce) = 480 grain
pennyweight = pennyweight troy
pennyweight troy (troy pennyweight) = 24 grain
pfund (German pfund) = 500 gram
picul (Chinese picul) = 100 catty
pondus (Roman pondus) = as
pood (Russian pood) = 36.11 pound
pound (avoirdupois pound) = .45359237 kg
pound ap (apothecary pound) = 12 oz ap
pound t = pound troy
pound troy (troy pound) = 12 oz troy
proton mass (proton rest mass) = 1.672614E-27 kg
quintal = 100 kg
Roman obolus = 8.77 grain
Roman talent = 125 libra
s ap = scruple
scruple (apothecary scruple) = 20 grain
scruple ap = scruple
scrupulum (Roman scrupulum) = 17.53 grain
short hundredweight (avoirdupois short hundredweight) = 100 pound
short quarter = 25 pound
short ton (avoirdupois short ton) = 2000 pound
slug = lbf*s^2/ft (derived unit)
Spanish libra = 1.014 pound
Spanish quintal = 101.4 pound
stone = 14 pound
t = metric ton
tael (Chinese tael) = .0625 catty
talent (Greek talent) = 60 mina
tan = picul
tn = short ton
ton = short ton
tonne = metric ton
troy carat = carat troy
troy dr = dram troy
troy dram = dram troy
troy gr = grain troy
troy grain = grain troy
troy lb = pound troy
troy oz = oz troy
troy pennyweight = pennyweight troy
troy pound = pound troy
u = AMU
UK quintal (British quintal) = 100 pound
UK quintal2 (British quintal) = 112 pound
uncia (Roman uncia) = 420 grain
unciae = uncia
wey mass = 252 pound
mass = kg (mass; category unit)
mass basis bearing capacity = surface density (surface density)
mass basis calorific value = specific energy (specific energy)
mass basis enthalpy = specific energy (specific energy)
mass basis flow rate = mass flow rate (mass flow rate)
mass basis flow rate to area = flow rate area mass basis (flow rate area mass basis)
mass basis flow rate to length = dynamic viscosity (dynamic viscosity)
mass basis specific fuel consumption = specific fuel consumption mass basis (specific fuel consumption mass basis)
mass basis specific heat capacity = specific heat capacity (specific heat capacity)
mass basis throughput = mass flow rate (mass flow rate)
mass concentration = mass density (mass density)
MASS DENSITY
concentration mass to volume = mass density
density = mass density
mass concentration = mass density
mass density = kg/m^3 (category unit)
mass to volume concentration = mass density
mass density = kg/m^3 (mass density; category unit)
MASS FLOW RATE
damping viscosity = mass flow rate
flow rate mass basis = mass flow rate
mass basis flow rate = mass flow rate
mass basis throughput = mass flow rate
mass flow rate = kg/s (category unit)
throughput mass basis = mass flow rate
mass flow rate = kg/s (mass flow rate; category unit)
mass to area structural loading = surface density (surface density)
MASS TO LENGTH
mass to length = kg/m (category unit)
mass to length = kg/m (mass to length; category unit)
mass to mass concentration = dimensionless unit
mass to volume concentration = mass density (mass density)
mass transfer coefficient = velocity (velocity)
maxwell = .00000001 Wb (magnetic flux)
mb = megabyte (data)
me = electron mass (mass)
mean calendar yr = calendar yr (time)
mean solar day = day (time)
mean solar yr = yr (time)
measurement ton = freight ton (volume)
mechanical power = power (power)
mega = 1000000 (prefix)
megabyte = 1024 kilobyte (data)
meter = m (length)
methuselah = 4 magnum (volume)
metre = m (length)
metric ton = 1000 kg (mass)
Mexican libra = 1.015 pound (mass)
mg (milligram) = milligram (mass)
mgd (megagallons per day) = 1000000 gallon/day (volume flow rate)
mho = siemens (conductance)
mi = mile (length)
micro = .000001 (prefix)
micron = .000001 m (length)
mil = .001 in (length)
mile = 5280 foot (length)
millenium = 1000 yr (time)
millennial = millenium (time)
milli = .001 (prefix)
million = 1000000 (prefix)
min = minute (time)
mina (Greek mina) = .9463 pound (mass)
miners inch = 1.5 ft^3/minute (volume flow rate)
minim = 1.66666666666667E-02 dram fluid (volume)
minute = 60 s (time)
mite (English mite) = .05 grain (mass)
mixing power = heat release rate (heat release rate)
mmHg (millimeters of mercury) = mm*Hg weight density (pressure; derived unit)
mn = neutron mass (mass)
mo = month (time)
mobility = electric mobility (electric mobility)
modulus of admittance = conductance (conductance)
modulus of impedance = electric resistance (electric resistance)
mol (mole) = mol (amount of substance; base unit)
molality (of a solute) = mol/kg (molality; category unit)
MOLALITY
molality (of a solute) = mol/kg (category unit)
molar = universal gas (molar heat capacity)
MOLAR CONDUCTIVITY
molar conductivity = S/m^2*mol (category unit)
molar conductivity = S/m^2*mol (molar conductivity; category unit)
MOLAR ENERGY
caloric value mole basis = molar energy
chemical potential = molar energy
electrochemical potential = molar energy
enthalpy mole basis = molar energy
molar energy = J/mol (category unit)
mole basis caloric value = molar energy
mole basis enthalpy = molar energy
molar energy = J/mol (molar energy; category unit)
molar entropy = molar heat capacity (molar heat capacity)
MOLAR HEAT CAPACITY
gas = universal gas
molar = universal gas
molar entropy = molar heat capacity
molar heat capacity = J/mol*K (category unit)
mole basis specific heat capacity = molar heat capacity
specific heat capacity mole basis = molar heat capacity
universal gas (constant) = 8.31434 J/mol*K
molar heat capacity = J/mol*K (molar heat capacity; category unit)
MOLAR MASS
molar mass = kg/mol (category unit)
molar mass = kg/mol (molar mass; category unit)
molar refraction = molar volume (molar volume)
MOLAR VOLUME
concentration volume to mole = molar volume
molar refraction = molar volume
molar volume = m^3/mol (category unit)
mole basis specific volume = molar volume
specific volume mole basis = molar volume
standard kilomole volume = 22.414 m^3/kmol
Vm = standard kilomole volume
volume to mole concentration = molar volume
molar volume = m^3/mol (molar volume; category unit)
mole = mol (amount of substance)
mole basis caloric value = molar energy (molar energy)
mole basis enthalpy = molar energy (molar energy)
mole basis flow rate = mole flow rate (mole flow rate)
mole basis specific heat capacity = molar heat capacity (molar heat capacity)
mole basis specific volume = molar volume (molar volume)
mole basis throughout = mole flow rate (mole flow rate)
MOLE FLOW RATE
conversion change rate = mole flow rate
flow rate mole basis = mole flow rate
mole basis flow rate = mole flow rate
mole basis throughout = mole flow rate
mole flow rate = mol/s (category unit)
throughput mole basis = mole flow rate
mole flow rate = mol/s (mole flow rate; category unit)
mole to volume concentration = concentration (concentration)
moment of force = energy (energy)
MOMENT OF INERTIA
moment of inertia = kg*m^2 (category unit)
moment of inertia of mass = moment of inertia
polar moment of inertia of mass = moment of inertia
product of inertia of mass = moment of inertia
moment of inertia = kg*m^2 (moment of inertia; category unit)
MOMENT OF INERTIA OF AREA
moment of inertia of area = m^4 (category unit)
moment of section = moment of inertia of area
polar moment of inertia of area = moment of inertia of area
product of inertia of area = moment of inertia of area
static moment of volume = moment of inertia of area
moment of inertia of area = m^4 (moment of inertia of area; category unit)
moment of inertia of mass = moment of inertia (moment of inertia)
MOMENT OF INERTIA OF VOLUME
moment of inertia of volume = m^5 (category unit)
polar moment of inertia of volume = moment of inertia of volume
product of inertia of volume = moment of inertia of volume
moment of inertia of volume = m^5 (moment of inertia of volume; category unit)
moment of section = moment of inertia of area (moment of inertia of area)
MOMENTUM
impulse = momentum
linear impulse = momentum
linear momentum = momentum
momentum = N*s (category unit)
momentum = N*s (momentum; category unit)
mono = 1 (prefix)
month = 8.33333333333333E-02 yr*approx (time)
monthly = month (time)
mp = proton mass (mass)
mpg (miles per gallon) = mile/gallon (fuel efficiency; derived unit)
mph (miles per hour) = mile/hour (velocity; derived unit)
mu (micro) = .000001 (prefix)
mutual inductance = inductance (inductance)
Mx = maxwell (magnetic flux)
myria = 10000 (prefix)
n (nano) = .000000001 (prefix)
N = newton (force)
Na = avogadro (unknown units)
nail (cloth nail) = .0625 yard (length)
nano = .000000001 (prefix)
naut mi = nautical mile (length)
nautical league = 3 nautical mile (length)
nautical mile = 1852 m (length)
naval shot = 15 fathom (length)
nebuchadnezzar = 10 magnum (volume)
net hundredweight = short hundredweight (mass)
net ton = short ton (mass)
neutron mass (neutron rest mass) = 1.67492E-27 kg (mass)
newton = kg*m/s^2 (force; derived unit)
nibble = .5 byte (data)
nit = cd/m^2 (luminance; derived unit)
NL = loschmidt (number concentration)
nmi = nautical mile (length)
nmile = nautical mile (length)
noggin = .125 quart (volume)
nonillion = 1E+30 (prefix)
novennial = 9 yr (time)
nox = .001 lux (illuminance)
Nt = newton (force)
NUMBER CONCENTRATION
loschmidt (Loschmidt's constant) = 2.68719E+25 1/m^3
NL = loschmidt
number concentration = 1/m^3 (category unit)
number concentration = 1/m^3 (number concentration; category unit)
obol (Greek obol) = 11.2 grain (mass)
octant = .25 pi*rad (plane angle)
octennial = 8 yr (time)
octillion = 1E+27 (prefix)
Oe = oersted (magnetic field strength)
oersted = 79.5774715459477 A/m (magnetic field strength)
ohm = V/A (electric resistance; derived unit)
oil arroba (Spanish oil arroba) = 3.32 gallon (volume)
oil barrel = petroleum barrel (volume)
olympiad = 4 yr*approx (time)
omega = ohm (electric resistance)
omer (Israeli omer) = .45 peck (volume)
one = 1 (prefix)
ounce = "oz"
oz (avoirdupois ounce) = .0625 pound (mass)
oz = replacement for "ounce"
oz ap (apothecary ounce) = 8 dram ap (mass)
oz fl = oz fluid (volume)
oz fluid (fluid ounce) = .25 gill (volume)
oz t = oz troy (mass)
oz troy (troy ounce) = 480 grain (mass)
P (peta) = 1E+15 (prefix)
p (pico) = .000000000001 (prefix)
P = poise (dynamic viscosity)
Pa = pascal (pressure)
pace = 30 in (length)
palm = 3 in (length)
parasang = 3.5 mile (length)
parsec = au*rad/arc sec (length; derived unit)
pascal = N/m^2 (pressure; derived unit)
pc = parsec (length)
pdl = poundal (force)
peck (dry peck) = 2 dry gallon (volume)
pennyweight = pennyweight troy (mass)
pennyweight troy (troy pennyweight) = 24 grain (mass)
per (" per ") = "/"
percent = .01
perch = rod (length)
perennial = yr (time)
perigon = circle (plane angle)
PERMEABILITY
magnetic field (constant) = .0000004 pi*H/m
magnetic permeability = permeability
permeability = H/m (category unit)
u0 = magnetic field
permeability = H/m (permeability; category unit)
permeability2 = area (area)
permeance = inductance (inductance)
PERMITTIVITY
dialectric permittivity = permittivity
dialectric strength = permittivity
electric field (constant) = 8.8542E-12 F/m
epsilon0 = electric field
permittivity = F/m (category unit)
permittivity = F/m (permittivity; category unit)
peta = 1E+15 (prefix)
petroleum barrel = 42 gallon (volume)
pfund (German pfund) = 500 gram (mass)
ph = phot (luminance)
phot = cd/cm^2 (luminance; derived unit)
pi = 3.14159265358979
pica (typography pica) = .166666666666667 in (length)
pico = .000000000001 (prefix)
picul (Chinese picul) = 100 catty (mass)
pieze = 1000 Pa (pressure)
pint (fluid pint) = .5 quart (volume)
pipe = 2 hogshead (volume)
pitch = frequency (frequency)
pk = peck (volume)
planck (Planck constant) = 6.626196E-34 J*s (angular momentum)
PLANE ANGLE
arc deg = degree
arc degree = degree
arc min = arc minute
arc minute (minute of arc) = 1.66666666666667E-02 arc degree
arc s (second of arc) = 1.66666666666667E-02 arc minute
arc sec = arc s
arc second = arc s
centesimal minute = .01 grade
centesimal second = .0001 grade
circle = 2 pi*rad
deg = degree
degree (Pi rad / 180) = 1.74532925199433E-02 rad
grad = grade
grade = .015707963267949 rad
octant = .25 pi*rad
perigon = circle
plane angle = rad (category unit)
quadrant = .5 pi*rad
r = rad
rad (radian) = rad (base unit)
radian = rad
rev = revolution
revolution = 2 pi*rad
sextant = .333333333333333 pi*rad
sign = .166666666666667 pi*rad
turn = 2 pi*rad
plane angle = rad (plane angle; category unit)
point (typography point) = .013837 in (length)
poise = gram/cm*s (dynamic viscosity; derived unit)
polar moment of inertia of area = moment of inertia of area (moment of inertia of area)
polar moment of inertia of mass = moment of inertia (moment of inertia)
polar moment of inertia of volume = moment of inertia of volume (moment of inertia of volume)
pole = rod (length)
pondus (Roman pondus) = as (mass)
pony = .5 jigger (volume)
pood (Russian pood) = 36.11 pound (mass)
potential = electric potential (electric potential)
potential difference = electric potential (electric potential)
pound (avoirdupois pound) = .45359237 kg (mass)
pound ap (apothecary pound) = 12 oz ap (mass)
pound force = pound*g (force; derived unit)
pound t = pound troy (mass)
pound troy (troy pound) = 12 oz troy (mass)
poundal = ft*pound/s^2 (force; derived unit)
POWER
acoustical power = power
electrical power = power
heat flow rate = power
horsepower = 550 ft*pound*g/sec
hp = horsepower
linear power = power
lusec = .000001 torr*m^3/s
mechanical power = power
power = W (category unit)
radiant flux = power
radiant power = power
W = watt
watt = J/s (derived unit)
power = W (power; category unit)
power to area = heat flux density (heat flux density)
PREFIXES
a (atto) = 1E-18
atto = 1E-18
bi = 2
billion = 1000000000
c (centi) = .01
centi = .01
centimilli = .00001
cm (centimilli) = .00001
d (deci) = .1
D (deka) = 10
da (deka) = 10
dec = 10
deci = .1
decillion = 1E+33
decimilli = .0001
deka = 10
demi = .5
dm (decimilli) = .0001
double = 2
duodec = 12
E (exa) = 1E+18
eighth = .125
exa = 1E+18
f (femto) = .000000000000001
femto = .000000000000001
G (giga) = 1000000000
giga = 1000000000
googol = 1E+100
h (hecto) = 100
half = .5
hecto = 100
hectokilo = 100000
hk (hectokilo) = 100000
hundred = 100
k (kilo) = 1000
kilo = 1000
M (mega) = 1000000
m (milli) = .001
ma (myria) = 10000
mega = 1000000
micro = .000001
milli = .001
million = 1000000
mono = 1
mu (micro) = .000001
myria = 10000
n (nano) = .000000001
nano = .000000001
nonillion = 1E+30
octillion = 1E+27
one = 1
P (peta) = 1E+15
p (pico) = .000000000001
peta = 1E+15
pico = .000000000001
quadr = 4
quadri = 4
quadrillion = 1E+15
quadruple = 4
quarter = .25
quin = 5
quintillion = 1E+18
semi = .5
septillion = 1E+24
sesqu = 1.5
sesqui = 1.5
sex = 6
sextillion = 1E+21
T (tera) = 1000000000000
ten = 10
tera = 1000000000000
thousand = 1000
thrice = 3
tri = 3
trillion = 1000000000000
triple = 3
u (micro) = .000001
undec = 11
vic = 20
Y (myria) = 10000
pregnancy = 9 month*approx (time)
PRESSURE
atm = atmosphere
atmosphere = 101325 Pa
bar = 100000 Pa
barie = .1 Pa
barye = .1 Pa
calorific value volume basis = pressure
draft = pressure
energy density = pressure
mmHg (millimeters of mercury) = mm*Hg weight density (derived unit)
Pa = pascal
pascal = N/m^2 (derived unit)
pieze = 1000 Pa
pressure = N/m^2 (category unit)
psi (pounds per square inch) = pound*g/in^2 (derived unit)
radiant energy density = pressure
sound pressure = pressure
standard atmosphere = atmosphere
stress = pressure
torr = mm*Hg weight density (derived unit)
vacuum = pressure
volume basis calorific value = pressure
pressure = N/m^2 (pressure; category unit)
pressure drop to length = weight density (weight density)
product of inertia of area = moment of inertia of area (moment of inertia of area)
product of inertia of mass = moment of inertia (moment of inertia)
product of inertia of volume = moment of inertia of volume (moment of inertia of volume)
proof = .005
proton mass (proton rest mass) = 1.672614E-27 kg (mass)
psi (pounds per square inch) = pound*g/in^2 (pressure; derived unit)
pt = pint (volume)
qt = quart (volume)
quadr = 4 (prefix)
quadrant = .5 pi*rad (plane angle)
quadri = 4 (prefix)
quadrillion = 1E+15 (prefix)
quadruple = 4 (prefix)
quantity of electricity = electric charge (electric charge)
quantity of heat = energy (energy)
quart (fluid quart) = .25 gallon (volume)
quarter = .25 (prefix)
quin = 5 (prefix)
quindecennial = 15 yr (time)
quinquennial = 5 yr (time)
quintal = 100 kg (mass)
quintillion = 1E+18 (prefix)
quire (of paper) = 25
r = rad (plane angle)
R = roentgen (radiation exposure)
rad (radian) = rad (plane angle; base unit)
Rad = .01 Gy (absorbed dose)
radian = rad (plane angle)
RADIANCE
radiance = W/m^2*sr (category unit)
radiance = W/m^2*sr (radiance; category unit)
radiant energy = energy (energy)
radiant energy density = pressure (pressure)
radiant exitance = heat flux density (heat flux density)
radiant flux = power (power)
radiant flux received = heat flux density (heat flux density)
RADIANT INTENSITY
radiant intensity = W/sr (category unit)
radiant intensity = W/sr (radiant intensity; category unit)
radiant power = power (power)
RADIATION EXPOSURE
R = roentgen
roentgen = .000258 A*s/kg
radiation exposure = specific charge (specific charge)
radioactivity = frequency (frequency)
rankine = dR (thermodynamic temperature)
rd = rod (length)
reactance = electric resistance (electric resistance)
reaction rate = concentration rate (concentration rate)
ream (of paper) = 20 quire
reaumur = dRe (thermodynamic temperature)
refrigeration = 12000 BTU/ton*hour (unknown units)
register ton = 100 ft^3 (volume)
rehoboam = 3 magnum (volume)
RELUCTANCE
reluctance = 1/H (category unit)
reluctance = 1/H (reluctance; category unit)
RELUCTIVITY
reluctivity = 1/H*m (category unit)
reluctivity = 1/H*m (reluctivity; category unit)
rem = .01 Sv (dose equiv)
REPLACED VALUES
/ = replacement for " per "
^2 = replacement for "squared"
^3 = replacement for "cubed"
ap = replacement for "apoth"
ap = replacement for "apothecary"
equiv = replacement for "equivalent"
fl = replacement for "liq"
fl = replacement for "liquid"
foot (" foot ") = replacement for "'"
foot = replacement for "feet"
inch (" inch ") = replacement for """
inch = replacement for "inches"
intl = replacement for "international"
oz = replacement for "ounce"
UK ("UK ") = replacement for "imp "
UK = replacement for "British"
UK = replacement for "imperial"
y ("y ") = replacement for "ies "
yr = replacement for "year"
REPLACEMENTS
" = " inch "
' = " foot "
*approx = ""
*avg = ""
*exact = ""
apoth = "ap"
apothecary = "ap"
approx = ""
avdp = ""
avg = ""
avoirdupois = ""
British = "UK"
cubed = "^3"
equivalent = "equiv"
exact = ""
feet = "foot"
ies ("ies ") = "y "
imp ("imp ") = "UK "
imperial = "UK"
inches = "inch"
international = "intl"
liq = "fl"
liquid = "fl"
ounce = "oz"
per (" per ") = "/"
squared = "^2"
year = "yr"
resistance = electric resistance (electric resistance)
RESISTIVITY
resistivity = ohm*m (category unit)
volume resistivity = resistivity
resistivity = ohm*m (resistivity; category unit)
rev = revolution (plane angle)
revolution = 2 pi*rad (plane angle)
reyn = lbf*s/in^2 (dynamic viscosity; derived unit)
rhe = 10 m^2/N*s (fluidity)
ri (Japanese ri) = 2.44 mile (length)
rod (surveyors rod) = 25 link (length)
roentgen = .000258 A*s/kg (radiation exposure)
Roman amphora = 6.84 gallon (volume)
Roman cubit = 17.5 in (length)
Roman foot = .971 foot (length)
Roman mile = 5000 Roman foot (length)
Roman obolus = 8.77 grain (mass)
Roman talent = 125 libra (mass)
rood = 40 rod^2 (area)
rope = 20 ft (length)
rotational acceleration = angular acceleration (angular acceleration)
rotational frequency = angular velocity (angular velocity)
rpm (revolutions per minute) = revolution/minute (angular velocity; derived unit)
rutherford = 1000000 Bq (activity)
rydberg = 1.36054 electron volt (energy)
s (second) = s (time; base unit)
S = siemens (conductance)
s ap = scruple (mass)
sA = statampere (electric current)
sabin = ft^2 (area; derived unit)
sack = 3 bushel (volume)
salmanazar = 6 magnum (volume)
sazhen (Russian sazhen) = 6.9 foot (length)
sb = stilb (luminance)
sC = statcoulomb (electric charge)
Sc frequency (cesium atom frequency) = 9192631770 1/s (frequency)
score = 20
scotch = 86 proof
scruple (apothecary scruple) = 20 grain (mass)
scruple ap = scruple (mass)
scrupulum (Roman scrupulum) = 17.53 grain (mass)
seam = 8 bushel (volume)
sec = s (time)
second = s (time)
section (of land) = mile^2 (area; derived unit)
section modulus = volume (volume)
self inductance = inductance (inductance)
semi = .5 (prefix)
septennial = 7 yr (time)
septillion = 1E+24 (prefix)
sesqu = 1.5 (prefix)
sesqui = 1.5 (prefix)
sex = 6 (prefix)
sextant = .333333333333333 pi*rad (plane angle)
sextillion = 1E+21 (prefix)
sF = statfarad (capacitance)
sH = stathenry (inductance)
shaku (Japanese shaku) = 11.93 in (length)
shipping ton = freight ton (volume)
short hundredweight (avoirdupois short hundredweight) = 100 pound (mass)
short quarter = 25 pound (mass)
short ton (avoirdupois short ton) = 2000 pound (mass)
shot = oz fluid (volume)
sidereal day = 86164.091 s (time)
sidereal month = 27.3217 day (time)
sidereal yr (sidereal year) = 365.2564 day (time)
siemens = A/V (conductance; derived unit)
sievert = m^2/s^2 (dose equiv; derived unit)
sigma = us (time)
sign = .166666666666667 pi*rad (plane angle)
skein = 120 yd (length)
skot = .001 apostilb (luminance)
slug = lbf*s^2/ft (mass; derived unit)
soccer field = 100 yard (length)
SOL = speed of light (velocity)
SOLID ANGLE
solid angle = sr (category unit)
spat = 4 pi*sr
sphere = 4 pi*sr
sr (steradian) = sr (base unit)
steradian = sr
solid angle = sr (solid angle; category unit)
solubility = concentration (concentration)
sound intensity = heat flux density (heat flux density)
sound pressure = pressure (pressure)
span (cloth span) = 9 in (length)
Spanish libra = 1.014 pound (mass)
Spanish quintal = 101.4 pound (mass)
spat = 4 pi*sr (solid angle)
SPECIFIC CHARGE
radiation exposure = specific charge
specific charge = C/kg (category unit)
specific charge = C/kg (specific charge; category unit)
specific conductance = conductivity (conductivity)
SPECIFIC ENERGY
absorbed dose = specific energy
calorific value mass basis = specific energy
dose equiv = specific energy
enthalpy mass basis = specific energy
mass basis calorific value = specific energy
mass basis enthalpy = specific energy
specific energy = m^2/s^2 (category unit)
TNT = 4600000 m^2/s^2
specific energy = m^2/s^2 (specific energy; category unit)
specific entropy = specific heat capacity (specific heat capacity)
SPECIFIC FUEL CONSUMPTION MASS BASIS
mass basis specific fuel consumption = specific fuel consumption mass basis
specific fuel consumption mass basis = kg/J (category unit)
specific fuel consumption mass basis = kg/J (specific fuel consumption mass basis; category unit)
specific fuel consumption volume basic = compressibility (compressibility)
SPECIFIC HEAT CAPACITY
mass basis specific heat capacity = specific heat capacity
specific entropy = specific heat capacity
specific heat capacity = J/kg*K (category unit)
specific heat capacity mass basis = specific heat capacity
specific heat capacity = J/kg*K (specific heat capacity; category unit)
specific heat capacity mass basis = specific heat capacity (specific heat capacity)
specific heat capacity mole basis = molar heat capacity (molar heat capacity)
specific impact energy = surface tension (surface tension)
SPECIFIC SURFACE AREA
specific surface area = m^2/kg (category unit)
specific surface area = m^2/kg (specific surface area; category unit)
SPECIFIC VOLUME
specific volume = m^3/kg (category unit)
yield = specific volume
specific volume = m^3/kg (specific volume; category unit)
specific volume mole basis = molar volume (molar volume)
speed = velocity (velocity)
speed of light (in vacuum) = 299792558 m/s*approx (velocity)
sphere = 4 pi*sr (solid angle)
spindle = 14400 yard (length)
spring = 92.9583333333333 day*approx (time)
square = 100 ft^2 (area)
squared = "^2"
sr (steradian) = sr (solid angle; base unit)
st = stere (volume)
St = stoke (kinematic viscosity)
stadia (Greek stadia) = 400 Greek cubit (length)
stadium (Roman stadium) = 202 yard (length)
standard atmosphere = atmosphere (pressure)
standard barrel = dry barrel (volume)
standard kilomole volume = 22.414 m^3/kmol (molar volume)
statampere = .000000000333564 A (electric current)
statcoulomb = .000000000333564 C (electric charge)
statfarad = 1.11265E-12 F (capacitance)
stathenry = 898755400000 H (inductance)
static moment of area = volume (volume)
STATIC MOMENT OF MASS
static moment of mass = kg*m (category unit)
static moment of mass = kg*m (static moment of mass; category unit)
static moment of volume = moment of inertia of area (moment of inertia of area)
statohm = 898755400000 ohm (electric resistance)
statute league = league (length)
statute mile = mile (length)
statvolt = 299.7925 V (electric potential)
stefan-boltzmann (Stefan-Boltzmann constant) = .000000056697 W/m^2*K^4 (unknown units)
steradian = sr (solid angle)
stere = m^3 (volume; derived unit)
sthene = 1000 N (force)
stilb = cd/cm^2 (luminance; derived unit)
STIMULATED ABSORPTION
stimulated absorption = s/kg (category unit)
stimulated emission = stimulated absorption
stimulated absorption = s/kg (stimulated absorption; category unit)
stimulated emission = stimulated absorption (stimulated absorption)
stoke = .0001 m^2/s (kinematic viscosity)
stone = 14 pound (mass)
stress = pressure (pressure)
stretchability = compressibility (compressibility)
strike = 2 bushel (volume)
summer = 93.5416666666667 day*approx (time)
sun (Japanese sun) = 1.193 in (length)
surface area = area (area)
surface concentration = adsorption (adsorption)
SURFACE DENSITY
bearing capacity mass basis = surface density
mass basis bearing capacity = surface density
mass to area structural loading = surface density
surface density = kg/m^2 (category unit)
surface density = kg/m^2 (surface density; category unit)
surface density of charge = electric flux density (electric flux density)
surface energy = energy (energy)
surface pressure = surface tension (surface tension)
SURFACE TENSION
elasticity = surface tension
intensity of force = surface tension
interfacial tension = surface tension
langley = calorie/cm^2 (derived unit)
specific impact energy = surface tension
surface pressure = surface tension
surface tension = N/m (category unit)
tension = surface tension
surface tension = N/m (surface tension; category unit)
survey foot = .304800609601219 m (length)
surveyors chain = chain (length)
surveyors furlong = furlong (length)
surveyors link = link (length)
surveyors rod = rod (length)
susceptance = conductance (conductance)
Sv = sievert (dose equiv)
sV = statvolt (electric potential)
synodic month = 29.5306 day (time)
T (tera) = 1000000000000 (prefix)
t = metric ton (mass)
T = tesla (magnetic flux density)
tablespoon = .5 oz fluid (volume)
tael (Chinese tael) = .0625 catty (mass)
talent (Greek talent) = 60 mina (mass)
tan = picul (mass)
tb = terabyte (data)
tbsp = tablespoon (volume)
tea cup = 6 oz fluid (volume)
teaspoon = .333333333333333 tablespoon (volume)
temperature = thermodynamic temperature (thermodynamic temperature)
temperature difference = thermodynamic temperature (thermodynamic temperature)
ten = 10 (prefix)
tension = surface tension (surface tension)
tera = 1000000000000 (prefix)
terabyte = 1024 gigabyte (data)
tesla = kg/A*s^2 (magnetic flux density; derived unit)
therm = 100000 BTU (energy)
THERMAL CONDUCTANCE
thermal conductance = W/K (category unit)
thermal conductance = W/K (thermal conductance; category unit)
THERMAL CONDUCTIVITY
heat conductivity = thermal conductivity
thermal conductivity = W/m*K (category unit)
thermal conductivity = W/m*K (thermal conductivity; category unit)
thermal diffusion = kinematic viscosity (kinematic viscosity)
thermal flux = heat flux density (heat flux density)
THERMAL RESISTANCE
thermal resistance = K*m^2/W (category unit)
thermal resistance = K*m^2/W (thermal resistance; category unit)
thermie = 1000000 calorie (energy)
thermochemical calorie = 4.184 J (energy)
THERMODYNAMIC TEMPERATURE
absolute temperature = thermodynamic temperature
celsius = dC
centigrade = dC
dC (Celsius degree) = K
dF (Fahrenheit degree) = .555555555555556 K
dK = K
dR (Rankine degree) = .555555555555556 K
dRe (Reaumur degree) = 1.25 K
fahrenheit = dF
K (Kelvin degree) = K (base unit)
kelvin = K
rankine = dR
reaumur = dRe
temperature = thermodynamic temperature
temperature difference = thermodynamic temperature
thermodynamic temperature = K (category unit)
thermodynamic temperature = K (thermodynamic temperature; category unit)
thousand = 1000 (prefix)
thrice = 3 (prefix)
throughput mass basis = mass flow rate (mass flow rate)
throughput mole basis = mole flow rate (mole flow rate)
throughput volume basis = volume flow rate (volume flow rate)
tick = .03125 $ (currency)
timber foot = ft^3 (volume; derived unit)
TIME
annual = yr
autumn = 89.6666666666667 day*approx
calendar yr (calendar year) = 365 day
cen = century
centennial = century
century = 100 yr
d = day
day = 24 hour
decade = 10 yr
diurnal = day
ennial = yr
fiscal yr (fiscal year) = 360 day
fortnight = 2 week
fy = fiscal yr
h = hour
hour = 60 minute
hr = hour
leap yr (leap year) = 366 day
lunation = synodic month
mean calendar yr = calendar yr
mean solar day = day
mean solar yr = yr
millenium = 1000 yr
millennial = millenium
min = minute
minute = 60 s
mo = month
month = 8.33333333333333E-02 yr*approx
monthly = month
novennial = 9 yr
octennial = 8 yr
olympiad = 4 yr*approx
perennial = yr
pregnancy = 9 month*approx
quindecennial = 15 yr
quinquennial = 5 yr
s (second) = s (base unit)
sec = s
second = s
septennial = 7 yr
sidereal day = 86164.091 s
sidereal month = 27.3217 day
sidereal yr (sidereal year) = 365.2564 day
sigma = us
spring = 92.9583333333333 day*approx
summer = 93.5416666666667 day*approx
synodic month = 29.5306 day
time = s (category unit)
week = 7 day
weekend = 2 day
weekly = week
winter = 89.0416666666667 day*approx
wk = week
yr (year) = 365.24219879 day*approx
time = s (time; category unit)
tn = short ton (mass)
TNT = 4600000 m^2/s^2 (specific energy)
ton = short ton (mass)
ton force = metric ton*g (force; derived unit)
tonne = metric ton (mass)
torque = energy (energy)
torr = mm*Hg weight density (pressure; derived unit)
torsion of a curve = wave number (wave number)
tou (Chinese tou) = 2.74 gallon (volume)
township = 36 mile^2 (area)
transmissivity = kinematic viscosity (kinematic viscosity)
tri = 3 (prefix)
trillion = 1000000000000 (prefix)
triple = 3 (prefix)
troy carat = carat troy (mass)
troy dr = dram troy (mass)
troy dram = dram troy (mass)
troy gr = grain troy (mass)
troy grain = grain troy (mass)
troy lb = pound troy (mass)
troy oz = oz troy (mass)
troy pennyweight = pennyweight troy (mass)
troy pound = pound troy (mass)
tsp = teaspoon (volume)
tun (English tun) = 8 barrel (volume)
turn = 2 pi*rad (plane angle)
twistability = compressibility (compressibility)
u (micro) = .000001 (prefix)
u = AMU (mass)
U = micron (length)
u0 = magnetic field (permeability)
UK ("UK ") = replacement for "imp "
UK (British) = 1.000002
UK = replacement for "British"
UK = replacement for "imperial"
UK bushel (British bushel) = 4 UK peck (volume)
UK caliber (British caliber) = .001
UK fl oz = UK oz fluid (volume)
UK fluid oz = UK oz fluid (volume)
UK gallon (British gallon) = 277.41945 in^3*approx (volume)
UK mile (British mile) = 1609.34721869 m (length)
UK oz = UK oz fluid (volume)
UK oz fl = UK oz fluid (volume)
UK oz fluid (British fluid ounce) = .05 UK pint (volume)
UK peck (British peck) = 554.84 in^3*approx (volume)
UK pint (British pint) = .5 UK quart (volume)
UK quart (British quart) = .25 UK gallon (volume)
UK quintal (British quintal) = 100 pound (mass)
UK quintal2 (British quintal) = 112 pound (mass)
UK thermal unit = BTU (energy)
uncia (Roman uncia) = 420 grain (mass)
unciae = uncia (mass)
undec = 11 (prefix)
universal gas (constant) = 8.31434 J/mol*K (molar heat capacity)
UNKNOWN UNITS
avogadro (Avogadro's number) = 6.022169E+23 1/mol*approx
faraday (Faraday constant) = 96486.7 C/mol
Fdy = faraday
gravitation (constant) = .00000000006664 N*m^2/kg^2
L = avogadro
Na = avogadro
refrigeration = 12000 BTU/ton*hour
stefan-boltzmann (Stefan-Boltzmann constant) = .000000056697 W/m^2*K^4
US dollar = $ (currency)
V = volt (electric potential)
vacuum = pressure (pressure)
vara (Mexican vara) = 32.99 in (length)
vedro (Russian vedro) = 3.25 gallon (volume)
VELOCITY
admiralty knot = 6080 ft/hour
c = speed of light
corrosion rate = velocity
flow rate to area volume basis = velocity
fps (feet per second) = ft/s (derived unit)
ips (inches per second) = in/s (derived unit)
knot (nautical miles per hour) = nmi/hour (derived unit)
kph (kilometers per hour) = km/hour (derived unit)
linear speed = velocity
linear velocity = velocity
Ma = mach
mach (Mach at sea level & 32 dF) = 331.46 m/s
mass transfer coefficient = velocity
mph (miles per hour) = mile/hour (derived unit)
SOL = speed of light
speed = velocity
speed of light (in vacuum) = 299792558 m/s*approx
velocity = m/s (category unit)
velocity linear = velocity
volume basis flow rate to area = velocity
velocity = m/s (velocity; category unit)
velocity angular = angular velocity (angular velocity)
velocity linear = velocity (velocity)
verst (Russian verst) = 3500 foot (length)
vic = 20 (prefix)
viscosity absolute = dynamic viscosity (dynamic viscosity)
viscosity dynamic = dynamic viscosity (dynamic viscosity)
viscosity kinematic = kinematic viscosity (kinematic viscosity)
Vm = standard kilomole volume (molar volume)
volt = W/A (electric potential; derived unit)
voltage = electric potential (electric potential)
voltage potential = electric potential (electric potential)
VOLUME
amphora (Greek amphora) = 10.3 gallon
arroba oil = oil arroba
arroba wine = wine arroba
balthazar = 8 magnum
barrel = 31.5 gallon
bath (Israeli bath) = 2.25 in^3
bbl = petroleum barrel
beer gallon (English beer gallon) = 282 in^3
board foot = 144 in^3
bu = bushel
bushel (dry bushel) = 4 peck
Canadian gallon = .00454609 m^3
capacity = volume
cc (cubic centimeters) = cm^3 (derived unit)
chetvert (Russian chetvert) = 5.96 bushel
coomb = 4 bushel
cord (of wood) = 128 ft^3
cord foot (of wood) = 16 ft^3
cu = cup
cup = .5 pint
displacement ton = 35 ft^3
dr fl = dram fluid
dr fluid = dram fluid
dram fl = dram fluid
dram fluid (fluid dram) = .125 oz fluid
drop = .03 cm^3
dry barrel = 7056 in^3
dry gallon = 268.8025 in^3*approx
dry pint = .5 dry quart
dry quart = .25 dry gallon
ephah (Israeli ephah) = 10 omer
fbm = board foot
fifth = .8 quart
firkin = 9 gallon
fl dr = dram fluid
fl dram = dram fluid
fl oz = oz fluid
fluid dr = dram fluid
fluid dram = dram fluid
fluid oz = oz fluid
freight ton = 40 ft^3
gal = gallon
gallon = 231 in^3
gill = .5 cup
hd = hogshead
hekat (Israeli hekat) = 291 in^3
hhd = hogshead
hogshead = 2 barrel
jeroboam = .8 gallon
jigger = 1.5 oz fluid
kilderkin = 18 gallon
koku (Japanese koku) = 47.6 gallon
l = liter
last = 80 bushel
liter = .001 m^3
load = 1.9 yd^3
magnum = 2 quart
measurement ton = freight ton
methuselah = 4 magnum
minim = 1.66666666666667E-02 dram fluid
nebuchadnezzar = 10 magnum
noggin = .125 quart
oil arroba (Spanish oil arroba) = 3.32 gallon
oil barrel = petroleum barrel
omer (Israeli omer) = .45 peck
oz fl = oz fluid
oz fluid (fluid ounce) = .25 gill
peck (dry peck) = 2 dry gallon
petroleum barrel = 42 gallon
pint (fluid pint) = .5 quart
pipe = 2 hogshead
pk = peck
pony = .5 jigger
pt = pint
qt = quart
quart (fluid quart) = .25 gallon
register ton = 100 ft^3
rehoboam = 3 magnum
Roman amphora = 6.84 gallon
sack = 3 bushel
salmanazar = 6 magnum
seam = 8 bushel
section modulus = volume
shipping ton = freight ton
shot = oz fluid
st = stere
standard barrel = dry barrel
static moment of area = volume
stere = m^3 (derived unit)
strike = 2 bushel
tablespoon = .5 oz fluid
tbsp = tablespoon
tea cup = 6 oz fluid
teaspoon = .333333333333333 tablespoon
timber foot = ft^3 (derived unit)
tou (Chinese tou) = 2.74 gallon
tsp = teaspoon
tun (English tun) = 8 barrel
UK bushel (British bushel) = 4 UK peck
UK fl oz = UK oz fluid
UK fluid oz = UK oz fluid
UK gallon (British gallon) = 277.41945 in^3*approx
UK oz = UK oz fluid
UK oz fl = UK oz fluid
UK oz fluid (British fluid ounce) = .05 UK pint
UK peck (British peck) = 554.84 in^3*approx
UK pint (British pint) = .5 UK quart
UK quart (British quart) = .25 UK gallon
vedro (Russian vedro) = 3.25 gallon
volume = m^3 (category unit)
wey = 40 bushel
wine arroba (Spanish wine arroba) = 4.3 gallon
wine bottle = .800633 quart
volume = m^3 (volume; category unit)
volume basis calorific value = pressure (pressure)
volume basis flow rate = volume flow rate (volume flow rate)
volume basis flow rate to area = velocity (velocity)
volume basis flow rate to length = kinematic viscosity (kinematic viscosity)
volume basis specific fuel consumption = compressibility (compressibility)
volume basis throughput = volume flow rate (volume flow rate)
volume conductivity = conductivity (conductivity)
volume density of charge = electric charge density (electric charge density)
VOLUME FLOW RATE
cfs (cubic feet per second) = ft^3/s (derived unit)
flow rate volume basis = volume flow rate
gpm (gallons per minute) = gal/min (derived unit)
mgd (megagallons per day) = 1000000 gallon/day
miners inch = 1.5 ft^3/minute
throughput volume basis = volume flow rate
volume basis flow rate = volume flow rate
volume basis throughput = volume flow rate
volume flow rate = m^3/s (category unit)
volume flow rate = m^3/s (volume flow rate; category unit)
volume resistivity = resistivity (resistivity)
volume to length = area (area)
volume to mole concentration = molar volume (molar volume)
volume to volume concentration = dimensionless unit
VOLUMETRIC HEAT CAPACITY
volumetric heat capacity = J/m^3*K (category unit)
volumetric heat transfer coefficient = volumetric heat capacity
volumetric heat capacity = J/m^3*K (volumetric heat capacity; category unit)
volumetric heat transfer coefficient = volumetric heat capacity (volumetric heat capacity)
W = watt (power)
watt = J/s (power; derived unit)
WAVE NUMBER
area to volume = wave number
capture unit = wave number
curvature of a curve = wave number
diopter (lens power) = 1/m (derived unit)
kayser = 100 1/m
lens power = wave number
torsion of a curve = wave number
wave number = 1/m (category unit)
wave number = 1/m (wave number; category unit)
wavelength = length (length)
Wb = weber (magnetic flux)
weber = V*s (magnetic flux; derived unit)
week = 7 day (time)
weekend = 2 day (time)
weekly = week (time)
weight = force (force)
WEIGHT DENSITY
H20 density (water weight density) = .0885472440945 kg/m^2*s^2
Hg weight density = 133322.368421 kg/m^2*s^2
pressure drop to length = weight density
weight density = N/m^3 (category unit)
weight density = N/m^3 (weight density; category unit)
wey = 40 bushel (volume)
wey mass = 252 pound (mass)
Wh (watt hour) = W*hour (energy; derived unit)
width = length (length)
wine arroba (Spanish wine arroba) = 4.3 gallon (volume)
wine bottle = .800633 quart (volume)
winter = 89.0416666666667 day*approx (time)
wk = week (time)
work = energy (energy)
WWII = 3.5 megaton*TNT (energy)
y ("y ") = replacement for "ies "
Y (myria) = 10000 (prefix)
yard = 3 ft (length)
yd = yard (length)
year = "yr"
yield = specific volume (specific volume)
yr (year) = 365.24219879 day*approx (time)
yr = replacement for "year"
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