POSC Specifications Version 3.0 |
Epicentre Standard Values ref_customary_unit_of_measure |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
ref _version .identifier | |||||
% | percent | POSC | epicentre 2.1 | current | |
1/a | per annum | per year or per annum | POSC | epicentre 2.1 | current |
1/angstrom | per angstrom | POSC | epicentre 2.1 | current | |
1/d | per day | POSC | epicentre 2.1 | current | |
1/ft | per foot | POSC | epicentre 2.1 | current | |
1/cm | per centimetre | POSC | epicentre 2.1 | current | |
1/degF | per degree Fahrenheit | Considered to be a change in temperature. | POSC | epicentre 2.1 | current |
1/degC | per degree Celsius | Considered to be a change in temperature. | POSC | epicentre 2.1 | current |
1/degR | per degree Rankine | Considered to be a change in temperature. | POSC | epicentre 2.1 | current |
1/ft2 | per square foot | POSC | epicentre 2.1 | current | |
1/km2 | per square kilometre | POSC | epicentre 2.1 | current | |
1/mi2 | per square mile | POSC | epicentre 2.1 | current | |
1/g | per gram | POSC | epicentre 2.1 | current | |
1/h | per hour | POSC | epicentre 2.1 | current | |
1/mm | per millimetre | POSC | epicentre 2.1 | current | |
1/nm | per nanometre | POSC | epicentre 2.1 | current | |
1/mi | per mile | POSC | epicentre 2.1 | current | |
1/min | per minute | POSC | epicentre 2.1 | current | |
1/yd | per yard | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
1/in | per inch | POSC | epicentre 2.1 | current | |
1/kPa | per kilopascal | POSC | epicentre 2.1 | current | |
1/psi | per pounds/square inch | POSC | epicentre 2.1 | current | |
1/uV | per microvolt | POSC | epicentre 2.1 | current | |
1/wk | per week | POSC | epicentre 2.1 | current | |
a | annum | also, year | POSC | epicentre 2.1 | current |
A.h | Ampere hour | POSC | epicentre 2.1 | current | |
A/mm | Ampere/millimetre | POSC | epicentre 2.1 | current | |
A/mm2 | Ampere/square millimetre | POSC | epicentre 2.1 | current | |
acre | acre | Based on US Survey feet | POSC | epicentre 2.1 | current |
acre.ft | acre foot | Based on US Survey feet | POSC | epicentre 2.1 | current |
angstrom | Angstrom | POSC | epicentre 2.1 | current | |
at | Technical atmosphere | technical atmosphere (kgf/cm2) | POSC | epicentre 2.1 | current |
atm | Atmosphere | atmosphere (14.696 lbf/in2) | POSC | epicentre 2.1 | current |
atm/m | Atmospheres/metre | POSC | epicentre 2.1 | current | |
bit | bit | The bit is a unit of storage capacity. The capacity, in bits, of a storage device is the base two logarithm of the number of possible states of the device. | POSC | epicentre 2.1 | current |
bar | bar | POSC | epicentre 2.1 | current | |
b | barn | POSC | epicentre 2.1 | current | |
b/cm3 | barns/cubic centimetre | POSC | epicentre 2.1 | current | |
b/elec | barns/electron | Standard unit for cross-section absorption | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
bbl | barrel | Actual volume. See also stb (stock tank barrel) | POSC | epicentre 2.1 | current |
bbl/acre | barrels/acre | POSC | epicentre 2.1 | current | |
bbl/acre.ft | barrel/acre foot | POSC | epicentre 2.1 | current | |
bbl/bbl | barrel/barrel | POSC | epicentre 2.1 | current | |
bbl/cP.d.psi | barrels/centiPoise day psi | POSC | epicentre 2.1 | current | |
bbl/d | barrel/day | POSC | epicentre 2.1 | current | |
bbl/d2 | barrels/day per day | POSC | epicentre 2.1 | current | |
bbl/d.acre.ft | barrels/day acre foot | POSC | epicentre 2.1 | current | |
bbl/d.ft | barrels/day foot | POSC | epicentre 2.1 | current | |
bbl/d.psi | barrel/day pounds/square inch | POSC | epicentre 2.1 | current | |
bbl/d.ft.psi | barrels/day foot pounds/sq in | POSC | epicentre 2.1 | current | |
bbl/ft | barrel/foot | POSC | epicentre 2.1 | current | |
bbl/hr | barrel/hour | POSC | epicentre 2.1 | current | |
bbl/hr2 | barrels/hour/hour | POSC | epicentre 2.1 | current | |
bbl/in | barrel/inch | POSC | epicentre 2.1 | current | |
bbl/mi | barrel/mile | POSC | epicentre 2.1 | current | |
bbl/MMscf(60F) | barrels/million std cubic feet, 60 degF | MMscf is million standard cubic feet. | POSC | epicentre 2.1 | current |
bbl/tonUK | barrel per U.K. ton | POSC | epicentre 2.1 | current | |
bbl/tonUS | barrel per U.S. ton | POSC | epicentre 2.1 | current | |
Btu | British thermal unit | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
Btu(million)/hr | million Btus/hour | POSC | epicentre 2.1 | current | |
Btu.in/hr.ft2.F | Btus/hour foot squared deg F per inch | POSC | epicentre 2.1 | current | |
Btu/bbl | British thermal units/barrel | POSC | epicentre 2.1 | current | |
Btu/bhp.hr | Btus/brake-horsepower hour | POSC | epicentre 2.1 | current | |
Btu/ft3 | British thermal units/cubic foot | POSC | epicentre 2.1 | current | |
Btu/galUK | British thermal units/U.K. gallon | POSC | epicentre 2.1 | current | |
Btu/galUS | British thermal units/U.S. gallon | POSC | epicentre 2.1 | current | |
Btu/hr | British thermal unit/hour | POSC | epicentre 2.1 | current | |
Btu/hr.ft.degF | British thermal units/hour foot deg F | POSC | epicentre 2.1 | current | |
Btu/hr.ft2 | Btus/hour per square foot | POSC | epicentre 2.1 | current | |
Btu/hr.ft2.degF | Btus/hour foot squared deg F | POSC | epicentre 2.1 | current | |
Btu/hr.ft2.degR | Btus/hour foot squared deg R | POSC | epicentre 2.1 | current | |
Btu/hr.ft3 | British thermal units/hour cubic foot | POSC | epicentre 2.1 | current | |
Btu/hr.ft3.degF | Btus/hour foot cubed deg F | POSC | epicentre 2.1 | current | |
Btu/hr.m2.degC | Btus/hour metre squared deg C | POSC | epicentre 2.1 | current | |
Btu/lbm | British thermal units/pound mass | POSC | epicentre 2.1 | current | |
Btu/lbm.degF | British thermal units/pound mass deg F | POSC | epicentre 2.1 | current | |
Btu/lbm.degR | British thermal units/pound mass deg R | POSC | epicentre 2.1 | current | |
Btu/min | British thermal units/minute | POSC | epicentre 2.1 | current | |
Btu/mol(lbm) | British thermal units/pound mass mol | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
Btu/mol(lbm).F | Btus/pound mass mol deg F | POSC | epicentre 2.1 | current | |
Btu/s | British thermal units/second | POSC | epicentre 2.1 | current | |
Btu/s.ft2 | British thermal units/second square foot | POSC | epicentre 2.1 | current | |
Btu/s.ft2.degF | Btus/second per square foot deg F | POSC | epicentre 2.1 | current | |
Btu/s.ft3 | Btus/second per cubic foot | POSC | epicentre 2.1 | current | |
Btu/s.ft3.degF | Btus/second per cubic foot deg F | POSC | epicentre 2.1 | current | |
C/cm2 | Coulombs/square centimetre | POSC | epicentre 2.1 | current | |
C/mm2 | Coulombs/square millimetre | POSC | epicentre 2.1 | current | |
C/mm3 | Coulombs/cubic millimetre | POSC | epicentre 2.1 | current | |
cal | calorie | POSC | epicentre 2.1 | current | |
cal/cm3 | calories/cubic centimetre | POSC | epicentre 2.1 | current | |
cal/mm3 | calories/cubic millimetre | POSC | epicentre 2.1 | current | |
cal/g | calories/gram | POSC | epicentre 2.1 | current | |
cal/g.K | calories/gram degree Kelvin | POSC | epicentre 2.1 | current | |
cal/h.cm.degC | calories/hour centimetre degree Celsius | POSC | epicentre 2.1 | current | |
cal/h.cm2 | calories/hour centimetre squared | POSC | epicentre 2.1 | current | |
cal/h.cm2.degC | calories/hour square centimetre deg C | POSC | epicentre 2.1 | current | |
cal/h.cm3 | calories/hour cubic centimetre | POSC | epicentre 2.1 | current | |
cal/kg | calories/kilogram | POSC | epicentre 2.1 | current | |
cal/lbm | calories/pound mass | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
cal/mL | calories/milliliter | POSC | epicentre 2.1 | current | |
cal/mol(g).degC | calories/gram mol degree celsius | POSC | epicentre 2.1 | current | |
cal/s.cm.degC | calories/second centimetre deg C | POSC | epicentre 2.1 | current | |
cal/s.cm2.degC | calories/second square centimetre deg C | POSC | epicentre 2.1 | current | |
cal/s.cm3 | calories/second cubic centimetre | POSC | epicentre 2.1 | current | |
cEuc | centiEuclid | per cent (per 100) | POSC | epicentre 2.1 | current |
cgr | centesimal minute | 100 centigrads per grad. | POSC | epicentre 3.0 | current |
ccgr | centesimal second | 100 centesimal seconds per centesimal minute. | POSC | epicentre 3.0 | current |
ch | ch | Similar to a kW | POSC | epicentre 2.1 | current |
ch.h | ch hours | Similar to a kW.h | POSC | epicentre 2.1 | current |
chBnA | chains | British chain (Benoit 1895 A) | POSC | epicentre 3.0 | current |
chBnB | chains | British chain (Benoit 1895 B) | POSC | epicentre 3.0 | current |
chCla | chains | Sears chain | POSC | epicentre 3.0 | current |
chSe | chains | Sears chain | POSC | epicentre 2.1 | current |
chUS | chains | US survey chain | POSC | epicentre 3.0 | current |
Chu | chus | POSC | epicentre 2.1 | current | |
cm | centimetre | POSC | epicentre 2.1 | current | |
cu | capture unit | same as sigma | POSC | epicentre 2.1 | current |
cm/s | centimetre/second | POSC | epicentre 2.1 | current | |
cm/s2 | centimetre/second squared | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
cm2 | square centimetre | POSC | epicentre 2.1 | current | |
cm2/g | centimetres squared/gram | POSC | epicentre 2.1 | current | |
cm2/s | centimetres squared/second | POSC | epicentre 2.1 | current | |
cm3 | cubic centimetre | POSC | epicentre 2.1 | current | |
cm3/g | cubic centimetres/gram | inverse density | POSC | epicentre 2.1 | current |
cm3/m3 | cubic centimetre/cubic metre | 10**-6 unitless | POSC | epicentre 2.1 | current |
cm4 | centimetres fourth | POSC | epicentre 2.1 | current | |
cmH2O(4degC) | cm of water at 4 degC. | POSC | epicentre 2.1 | current | |
cP | centipoise | POSC | epicentre 2.1 | current | |
cSt | centiStoke | POSC | epicentre 2.1 | current | |
cu ft | cubic feet | preferred is ft3 | POSC | epicentre 3.0 | deprecated |
cu in | cubic inch | preferred is in3 | POSC | epicentre 3.0 | deprecated |
cu yd | cubic yard | preferred is yd3 | POSC | epicentre 3.0 | deprecated |
cubem | cubem | unit of volume - cubic mile. preferred is mi3 | POSC | epicentre 2.1 | current |
curie | curie | POSC | epicentre 2.1 | current | |
CV | CV | POSC | epicentre 2.1 | current | |
CV.h | CV hours | POSC | epicentre 2.1 | current | |
cwtUK | UK hundredweight | POSC | epicentre 2.1 | current | |
cwtUS | US hundredweight | 100 pounds mass | POSC | epicentre 2.1 | current |
c | cycle | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
c/s | cycles/second | also Hz | POSC | epicentre 2.1 | current |
d | day | 24 hours (not sidereal) | POSC | epicentre 2.1 | current |
d/ft3 | days/cubic foot | POSC | epicentre 2.1 | current | |
d/m3 | days/cubic metre | POSC | epicentre 2.1 | current | |
D | darcy | units of um2 | POSC | epicentre 2.1 | current |
D.ft | darcy foot | POSC | epicentre 2.1 | current | |
D.m | darcy metre | POSC | epicentre 2.1 | current | |
dB | decibel | 1 bel = 10 decibels | POSC | epicentre 2.1 | current |
dB/ft | decibels/foot | POSC | epicentre 2.1 | current | |
dB/m | decibels/metre | POSC | epicentre 2.1 | current | |
dB/O | decibels/octave | POSC | epicentre 2.1 | current | |
ddegC | change in degrees Celsius | POSC | epicentre 2.1 | current | |
ddegK | change in degrees Kelvin | POSC | epicentre 2.1 | current | |
ddegF | change in degrees Fahrenheit | POSC | epicentre 2.1 | current | |
ddegR | change in degrees Rankine | POSC | epicentre 2.1 | current | |
dega | degree of an angle | POSC | epicentre 2.1 | current | |
dega/ft | degrees of an angle/foot | POSC | epicentre 2.1 | current | |
dega/ft(100) | degrees of an angle/100 feet | POSC | epicentre 2.1 | current | |
dega/m(30) | degrees of an angle/30 metres | POSC | epicentre 3.0 | current | |
dega/m | degrees of an angle/metre | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
dega/min | degrees of an angle/minute | angular velocity | POSC | epicentre 2.1 | current |
dAPI | API gravity | POSC | epicentre 2.1 | current | |
degC | degrees Celsius | POSC | epicentre 2.1 | current | |
degC/km | degrees Celsius/kilometre | POSC | epicentre 2.1 | current | |
degC/m | degrees Celsius/metre | POSC | epicentre 2.1 | current | |
degC.m2.h/kcal | degrees C square metres hours/kilocal | POSC | epicentre 2.1 | current | |
degF | degree Fahrenheit | POSC | epicentre 2.1 | current | |
degF.ft2.h/Btu | degrees F square feet hours/Btu | POSC | epicentre 2.1 | current | |
degF/ft | degrees Fahrenheit/foot | POSC | epicentre 2.1 | current | |
degF/ft(100) | degrees Fahrenheit/100 feet. | Used for temperature gradient | POSC | epicentre 2.1 | current |
degR | degrees Rankine | POSC | epicentre 2.1 | current | |
dm | decimetre | POSC | epicentre 2.1 | current | |
dm3 | cubic decimetre | Equivalent to a liter | POSC | epicentre 2.1 | current |
dm3/kg | cubic decimetres/kilogram | POSC | epicentre 2.1 | current | |
dm3/km(100) | cubic decimetres/100 kilometres | POSC | epicentre 2.1 | current | |
dm3/kW.h | cubic decimetres/kilowatt hour | POSC | epicentre 2.1 | current | |
dm3/m | cubic decimetres/metre | units of m2 | POSC | epicentre 2.1 | current |
dm3/m3 | cubic decimetres/cubic metre | 10**-3 unitless | POSC | epicentre 2.1 | current |
dm3/MJ | cubic decimetres/megajoule | POSC | epicentre 2.1 | current | |
dm3/mol(kg) | cubic decimetres/kilogram mole | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
dm3/s | cubic decimetres/second | POSC | epicentre 2.1 | current | |
dm3/s2 | cubic decimetres/second/second | POSC | epicentre 2.1 | current | |
dm3/t | cubic decimetres/ton | POSC | epicentre 2.1 | current | |
dyne | dynes | POSC | epicentre 2.1 | current | |
dyne.cm2 | dyne centimetre squared | POSC | epicentre 2.1 | current | |
dyne.s/cm2 | dyne seconds/square centimetre | POSC | epicentre 2.1 | current | |
dyne/cm | dynes/centimetre | POSC | epicentre 2.1 | current | |
dyne/cm2 | dynes/square centimetre | POSC | epicentre 2.1 | current | |
(dyne/cm)4/gcm3 | dynes/centimetre fourth/gram cm cubed | POSC | epicentre 2.1 | current | |
EJ | exajoule | POSC | epicentre 2.1 | current | |
EJ/a | exajoules/year | POSC | epicentre 2.1 | current | |
eq | equivalent | POSC | epicentre 2.2.2 | current | |
eq/kg | equivalents/ kilogram | POSC | epicentre 2.2.2 | current | |
eq/L | equivalents/ Liter | POSC | epicentre 2.2.2 | current | |
eq/m3 | equivalent/ cubic metre | POSC | epicentre 2.2.2 | current | |
erg | ergs | POSC | epicentre 2.1 | current | |
erg/a | ergs/year | POSC | epicentre 2.1 | current | |
erg/cm2 | ergs/square centimetre | POSC | epicentre 2.1 | current | |
erg/cm3 | ergs/cubic centimetre | POSC | epicentre 2.1 | current | |
erg/g | ergs/gram | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
erg/kg | ergs/kilogram | POSC | epicentre 2.1 | current | |
erg/m3 | ergs/cubic metre | POSC | epicentre 2.1 | current | |
eV | electron volts | POSC | epicentre 2.1 | current | |
fathom | fathoms | 6 feet | POSC | epicentre 2.1 | current |
fC | femtocoulomb | POSC | epicentre 2.1 | current | |
fl ozUK | UK fluid ounce | POSC | epicentre 2.1 | current | |
fl ozUS | US fluid ounces | POSC | epicentre 2.1 | current | |
flops | flops | floating point operations per second | POSC | epicentre 2.1 | current |
footcandle | footcandles | POSC | epicentre 2.1 | current | |
footcandle.s | footcandle seconds | POSC | epicentre 2.1 | current | |
ft | foot | international foot | POSC | epicentre 2.1 | current |
ft.lbf | foot pounds force | Unit of energy | POSC | epicentre 2.1 | current |
ft.lbf/bbl | foot pounds force/barrel | POSC | epicentre 2.1 | current | |
ft.lbf/galUS | foot pounds force/US gallon | POSC | epicentre 2.1 | current | |
ft.lbf/lbm | foot pounds force/pound mass | POSC | epicentre 2.1 | current | |
ft.lbf/min | foot pounds force/minute | POSC | epicentre 2.1 | current | |
ft.lbf/s | foot pounds force/second | POSC | epicentre 2.1 | current | |
ft/bbl | feet/barrel | POSC | epicentre 2.1 | current | |
ft/d | feet/day | POSC | epicentre 2.1 | current | |
ft/degF | feet/degree Fahrenheit | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
ft/ft3 | feet/cubic foot | POSC | epicentre 2.1 | current | |
ft/galUS | feet/US gallon | POSC | epicentre 2.1 | current | |
ft/h | feet/hour | POSC | epicentre 2.1 | current | |
ft/in | feet/inch | POSC | epicentre 2.1 | current | |
ft/m | feet/metre | POSC | epicentre 2.1 | current | |
ft/mi | feet/mile | Multiple of unitless | POSC | epicentre 2.1 | current |
ft/min | feet/minute | velocity | POSC | epicentre 2.1 | current |
ft/s | feet/second | POSC | epicentre 2.1 | current | |
ft/s2 | feet/second squared | POSC | epicentre 2.1 | current | |
ft2 | square foot | POSC | epicentre 2.1 | current | |
ft2/h | square feet/hour | POSC | epicentre 2.1 | current | |
ft2/in3 | square feet/cubic inch | POSC | epicentre 2.1 | current | |
ft2/s | square feet/second | POSC | epicentre 2.1 | current | |
ft3 | cubic feet | POSC | epicentre 2.1 | current | |
ft3/bbl | cubic feet/barrel | POSC | epicentre 2.1 | current | |
ft3/d | cubic feet/day | POSC | epicentre 2.1 | current | |
ft3/d.ft.psi | cubic feet/day foot psi | POSC | epicentre 2.1 | current | |
ft3/d2 | cubic feet/day/day | POSC | epicentre 2.1 | current | |
ft3/ft | cubic feet/foot | POSC | epicentre 2.1 | current | |
ft3/ft3 | cubic feet/cubic foot | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
ft3/h | cubic feet/hour | POSC | epicentre 2.1 | current | |
ft3/h2 | cubic feet/hour/hour | POSC | epicentre 2.1 | current | |
ft3/lbm | cubic feet/pound mass | POSC | epicentre 2.1 | current | |
ft3/min | cubic feet/minute | POSC | epicentre 2.1 | current | |
ft3/min2 | cubic feet/minute/minute | POSC | epicentre 2.1 | current | |
ft3/min.ft2 | cubic feet/min square foot | POSC | epicentre 2.1 | current | |
ft3/mol(lbm) | cubic feet/mole (pound mass) | POSC | epicentre 2.1 | current | |
ft3/s | cubic feet/second | POSC | epicentre 2.1 | current | |
ft3/s2 | cubic feet/second/second | POSC | epicentre 2.1 | current | |
ft3/s.ft2 | cubic feet/second square foot | POSC | epicentre 2.1 | current | |
ft3/scf(60F) | cubic feet/std cubic foot, 60 deg F | POSC | epicentre 2.1 | current | |
ft3(std,60F) | cubic feet at standard conditions | POSC | epicentre 2.1 | current | |
ftMA | Modified American Foot | The modified American foot. | POSC | epicentre 2.1 | current |
ftCla | Imperial Foot | Clarke's Foot. | POSC | epicentre 2.1 | current |
ftUS | US Survey Foot | The U. S. legal survey foot. | POSC | epicentre 2.1 | current |
ftBnA | British Foot (Benoit 1895 A) | POSC | epicentre 3.0 | current | |
ftBnB | British Foot (Benoit 1895 B) | POSC | epicentre 3.0 | current | |
ftBr(65) | British Foot 1865 | POSC | epicentre 3.0 | current | |
ftSe | Sears Foot | POSC | epicentre 2.2.1 | current | |
ftInd | Indian Foot | The Imperial Foot modified in India. | POSC | epicentre 2.2.2 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
ftInd(37) | Indian Foot, 1937 | The Imperial Foot modified in India. | POSC | epicentre 3.0 | current |
ftInd(62) | Indian Foot, 1962 | The Imperial Foot modified in India. | POSC | epicentre 3.0 | current |
ftInd(75) | Indian Foot, 1975 | The Imperial Foot modified in India. | POSC | epicentre 3.0 | current |
ftGC | Gold Coast Foot | The foot used in Ghana. | POSC | epicentre 3.0 | current |
gon | gons | Deprecated. Use grads | POSC | epicentre 3.0 | deprecated |
gr | grad | Same as gons | POSC | epicentre 2.1 | current |
g | gram | POSC | epicentre 2.1 | current | |
g.ft/cm3.s | gram feet/cubic centimetre second | Acoustic impedance - density times velocity | POSC | epicentre 2.1 | current |
g/cm3 | grams/cubic centimetre | POSC | epicentre 2.1 | current | |
g/cm4 | grams/centimetre fourth | POSC | epicentre 2.1 | current | |
g/dm3 | grams/cubic decimetre | POSC | epicentre 2.1 | current | |
g/galUK | grams/UK gallon | POSC | epicentre 2.1 | current | |
g/galUS | grams/US gallon | POSC | epicentre 2.1 | current | |
g/kg | grams/kilogram | unitless | POSC | epicentre 2.1 | current |
g/L | grams/litre | Preferred unit is g/dm3 | POSC | epicentre 2.1 | current |
g/m3 | grams/cubic metre | POSC | epicentre 2.1 | current | |
g/s | grams/second | POSC | epicentre 2.1 | current | |
Ga | gigayears | POSC | epicentre 2.1 | current | |
Gal | galileo | Measure of acceleration | POSC | epicentre 2.1 | current |
galUK | UK gallon | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
galUK/ft3 | UK gallons/cubic foot | POSC | epicentre 2.1 | current | |
galUK/hr | UK gallons/hour | POSC | epicentre 2.1 | current | |
galUK/hr2 | UK gallons/hour/hour | POSC | epicentre 2.1 | current | |
galUK/hr.ft | UK gallons/hour foot | POSC | epicentre 2.1 | current | |
galUK/hr.ft2 | UK gallons/hour square foot | POSC | epicentre 2.1 | current | |
galUK/hr.in | UK gallons/hour inch | POSC | epicentre 2.1 | current | |
galUK/hr.in2 | UK gallons/hour square inch | POSC | epicentre 2.1 | current | |
galUK/lbm | UK gallons/pound mass | POSC | epicentre 2.1 | current | |
galUK/Mbbl | UK gallons/1000 barrels | POSC | epicentre 2.1 | current | |
galUK/mi | UK gallons/mile | POSC | epicentre 2.1 | current | |
galUK/min | UK gallons/minute | POSC | epicentre 2.1 | current | |
galUK/min2 | UK gallons/minute/minute | POSC | epicentre 2.1 | current | |
galUK/min.ft | UK gallons/minute foot | POSC | epicentre 2.1 | current | |
galUK/min.ft2 | UK gallons/minute square foot | POSC | epicentre 2.1 | current | |
galUS | US gallons | POSC | epicentre 2.1 | current | |
galUS/ft | US gallons/foot | POSC | epicentre 2.1 | current | |
galUS/ft3 | US gallons/cubic foot | POSC | epicentre 2.1 | current | |
galUS/hr | US gallons/hour | POSC | epicentre 2.1 | current | |
galUS/hr2 | US gallons/hour/hour | POSC | epicentre 2.1 | current | |
galUS/hr.ft | US gallons/foot hour | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
galUS/hr.ft2 | US gallons/hour square foot | POSC | epicentre 2.1 | current | |
galUS/hr.in | US gallons/hour inch | POSC | epicentre 2.1 | current | |
galUS/hr.in2 | US gallons/hour square inch | POSC | epicentre 2.1 | current | |
galUS/Mscf(60F) | US gals/1000 std cubic feet, 60 deg F | POSC | epicentre 2.1 | current | |
galUS/lbm | US gallons/pound mass | POSC | epicentre 2.1 | current | |
galUS/Mbbl | US gallons/1000 barrels | POSC | epicentre 2.1 | current | |
galUS/mi | US gallons/mile | POSC | epicentre 2.1 | current | |
galUS/min | US gallons/minute | POSC | epicentre 2.1 | current | |
galUS/min2 | US gallons/minute/minute | POSC | epicentre 2.1 | current | |
galUS/min.ft | US gallons/minute foot | POSC | epicentre 2.1 | current | |
galUS/min.ft2 | US gallons/minute square foot | POSC | epicentre 2.1 | current | |
galUS/tonUK | US gallons/UK ton | POSC | epicentre 2.1 | current | |
galUS/tonUS | US gallons/US ton | POSC | epicentre 2.1 | current | |
gal/sack | US gallons/94 lb sack | US gallons per API (94 pound) sack of cement. | POSC | epicentre 2.2 | current |
gamma | gamma | measure of magnetic field strength. | POSC | epicentre 2.1 | current |
gauss | gauss | POSC | epicentre 2.1 | current | |
GeV | billions of electron volts | POSC | epicentre 2.1 | current | |
GPa | gigapascal | POSC | epicentre 2.1 | current | |
grain | grain | 1/7000 lbm (avoirdupois) | POSC | epicentre 2.1 | current |
grain/ft3 | grains/cubic foot | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
grain/ft3(100) | grains/100 cubic feet | POSC | epicentre 2.1 | current | |
grain/galUS | grains/US gallon | POSC | epicentre 2.1 | current | |
Gsm3 | giga standard cubic metres 15C | POSC | epicentre 2.2.1 | current | |
GW | gigawatt | POSC | epicentre 2.1 | current | |
GW.h | gigawatt hour | POSC | epicentre 2.1 | current | |
h | hour | POSC | epicentre 2.1 | current | |
h/ft3 | hours/cubic foot | POSC | epicentre 2.1 | current | |
ha | hectare | POSC | epicentre 2.1 | current | |
ha.m | hectare metres | POSC | epicentre 2.1 | current | |
hhp | hydraulic horsepower | POSC | epicentre 2.1 | current | |
hp | horsepower | 550 ft.lbf/s | POSC | epicentre 2.1 | current |
ehp | electric horsepower | POSC | epicentre 2.1 | current | |
hp.hr | horsepower hour | POSC | epicentre 2.1 | current | |
hp.hr/bbl | horsepower hours/barrel | POSC | epicentre 2.1 | current | |
hp.hr/lbm | horsepower hours/pound mass | POSC | epicentre 2.1 | current | |
hp/ft3 | horsepower/cubic foot | POSC | epicentre 2.1 | current | |
Hz | Hertz | cycles/second. Often considered a derived SI element. But it is necessary to put it here to relate to rad/s. | POSC | epicentre 2.1 | current |
in | inch | POSC | epicentre 2.1 | current | |
in/in.degF | inches/inch degree Fahrenheit | POSC | epicentre 2.1 | current | |
in/min | inches/minute | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
in/s | inches/second | POSC | epicentre 2.1 | current | |
in/a | inches/year | POSC | epicentre 2.1 | current | |
in2 | square inches | POSC | epicentre 2.1 | current | |
in2/ft2 | square inches/square foot | unit of tortuosity | POSC | epicentre 2.1 | current |
in2/in2 | square inches/square inch | POSC | epicentre 2.1 | current | |
in2/s | square inches/second | POSC | epicentre 2.1 | current | |
in3 | cubic inches | POSC | epicentre 2.1 | current | |
in4 | inches to the fourth | POSC | epicentre 2.1 | current | |
inH2O(39.2F) | inches of water at 39.2 deg F | 39.2 degF = 4 degC = temperature for the maximum density of water | POSC | epicentre 2.1 | current |
inH2O(60F) | inches of water at 60 deg F | 60 degF is close to metric value of 15 degC | POSC | epicentre 2.1 | current |
inHg(32F) | inches of mercury at 32 deg F | POSC | epicentre 2.1 | current | |
inHg(60F) | inches of mercury at 60 deg F | POSC | epicentre 2.1 | current | |
J/cm2 | joules/square centimetre | POSC | epicentre 2.1 | current | |
J/dm3 | joules/cubic decimetre | POSC | epicentre 2.1 | current | |
J/g | joules/gram | POSC | epicentre 2.1 | current | |
J/g.K | joules/gram degree Kelvin | POSC | epicentre 2.1 | current | |
J/m | joules/metre | POSC | epicentre 2.1 | current | |
J/m2 | joules/square metre | POSC | epicentre 2.1 | current | |
J/s.m2.degC | joules/second square metre deg C | POSC | epicentre 2.1 | current | |
K.m2/kW | degrees Kelvin square metres/kilowatt | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
kbyte | kilobyte | 1024 bytes | POSC | epicentre 2.1 | current |
kC | kilocoulombs | POSC | epicentre 2.1 | current | |
kcal | kilocalories | POSC | epicentre 2.1 | current | |
kcal.m/cm2 | kilocalorie metres/square centimetre | POSC | epicentre 2.1 | current | |
kcal/cm3 | kilocalories/cubic centimetre | POSC | epicentre 2.1 | current | |
kcal/g | kilocalories/gram | POSC | epicentre 2.1 | current | |
kcal/h | kilocalories/hour | POSC | epicentre 2.1 | current | |
kcal/h.m.degC | kilocalories/hour metre degree Celsius | POSC | epicentre 2.1 | current | |
kcal/h.m2.degC | kilocalorie/hour square metre deg C | POSC | epicentre 2.1 | current | |
kcal/kg | kilocalories/kilogram | POSC | epicentre 2.1 | current | |
kcal/kg.degC | kilocalories/kilogram degree Celsius | POSC | epicentre 2.1 | current | |
kcal/m3 | kilocalroies/cubic metre | POSC | epicentre 2.1 | current | |
kcal/mol(g) | kilocalories/mole (gram) | POSC | epicentre 2.1 | current | |
keV | kiloelectron volts | POSC | epicentre 2.1 | current | |
kg/dm3 | kilograms/cubic decimetre | POSC | epicentre 2.1 | current | |
kg.m/cm2 | kilogram metres/square centimetre | POSC | epicentre 2.1 | current | |
kg/dm4 | kilograms/decimetre fourth | POSC | epicentre 2.1 | current | |
kg/h | kilograms/hour | POSC | epicentre 2.1 | current | |
kg/kg | kilograms/kilogram | unitless | POSC | epicentre 2.1 | current |
kg/kW.h | kilograms/kilowatt hour | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
kg/MJ | kilograms/megajoule | POSC | epicentre 2.1 | current | |
kgf | kilogram force | POSC | epicentre 2.1 | current | |
kgf.m | kilogram force metres | POSC | epicentre 2.1 | current | |
kgf.m2 | kilogram force metres squared | POSC | epicentre 2.1 | current | |
kgf.m/cm2 | kilogram force metres/square centimetre | POSC | epicentre 2.1 | current | |
kgf.m/m | kilograms force metres/metre | POSC | epicentre 2.1 | current | |
kgf.s/m2 | kilograms force seconds/square metre | POSC | epicentre 2.1 | current | |
kgf/cm | kilograms force/centimetre | POSC | epicentre 2.1 | current | |
kgf/mm2 | kilogram force/square millimetre | POSC | epicentre 2.1 | current | |
kHz | kilohertz | POSC | epicentre 2.1 | current | |
kJ | kilojoules | POSC | epicentre 2.1 | current | |
kJ.m/h.m2.K | kilojoule metres/hour sq metre deg K | POSC | epicentre 2.1 | current | |
kJ/dm3 | kilojoules/cubic decimetre | POSC | epicentre 2.1 | current | |
kJ/h.m2.K | kilojoules/hour square metre deg K | POSC | epicentre 2.1 | current | |
kJ/kg | kilojoule/kilogram | POSC | epicentre 2.1 | current | |
kJ/kg.K | kilojoules/kilogram degree Kelvin | POSC | epicentre 2.1 | current | |
kJ/m3 | kilojoule/cubic metre | POSC | epicentre 2.1 | current | |
kJ/mol(kg) | kilojoule/mole (kilogram) | POSC | epicentre 2.1 | current | |
kJ/mol(kg).K | kilojoules/mole (kilogram) deg K | POSC | epicentre 2.1 | current | |
km | kilometre | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
km/cm | kilometre/ centimetre | POSC | epicentre 2.1 | current | |
km/dm3 | kilometres/cubic decimetre | POSC | epicentre 2.1 | current | |
km/h | kilometres/hour | POSC | epicentre 2.1 | current | |
km/L | kilometres/litre | POSC | epicentre 2.1 | current | |
km2 | square kilometres | POSC | epicentre 2.1 | current | |
km3 | cubic kilometres | POSC | epicentre 2.1 | current | |
kN | kilonewtons | POSC | epicentre 2.1 | current | |
kN.m | kilonewton metres | POSC | epicentre 2.1 | current | |
kN.m2 | kilonewton metres squared | POSC | epicentre 2.1 | current | |
kN/m | kilonewtons/metre | POSC | epicentre 2.1 | current | |
knot | knots | nautical miles per hour | POSC | epicentre 2.1 | current |
kPa | kilopascals | POSC | epicentre 2.1 | current | |
kPa.s/m | kilopascal seconds/metre | POSC | epicentre 2.1 | current | |
kPa/m | kilopascals/metre | POSC | epicentre 2.1 | current | |
ksm3 | kilo standard cubic metres 15C | POSC | epicentre 2.2.1 | current | |
ksm3/d | thousand std cubic metres/ day | POSC | epicentre 2.2.1 | current | |
ksm3/sm3 | 1000 std cubic metres/ std cubic metre | POSC | epicentre 2.1 | current | |
kV | kilovolt | POSC | epicentre 2.1 | current | |
kW | kilowatts | POSC | epicentre 2.1 | current | |
kW.h | kilowatt hours | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
kW.h/dm3 | kilowatt hours/decimetre | POSC | epicentre 2.1 | current | |
kW.h/kg | kilowatt hours/kilogram | POSC | epicentre 2.1 | current | |
kW.h/kg.degC | kilowatt hours/kilogram degree C | POSC | epicentre 2.1 | current | |
kW.h/m3 | kilowatt hours/cubic metres | POSC | epicentre 2.1 | current | |
kW/m2 | kilowatts/square metre | POSC | epicentre 2.1 | current | |
kW/m2.K | kilowatts/square metre degree Kelvin | POSC | epicentre 2.1 | current | |
kW/m3 | kilowatts/cubic metre | POSC | epicentre 2.1 | current | |
kW/m3.K | killowatts/cubic metre degree Kelvin | POSC | epicentre 2.1 | current | |
L | litre | same as preferred symbol dm3 | POSC | epicentre 2.1 | current |
L/km(100) | litres/100 kilometres | POSC | epicentre 2.1 | current | |
L/m | litres/metre | POSC | epicentre 2.1 | current | |
L/m3 | litres/cubic metre | unitless | POSC | epicentre 2.1 | current |
L/mol(g) | litres/mole (gram) | POSC | epicentre 2.1 | current | |
L/mol(kg) | litres/mole (kilogram) | POSC | epicentre 2.1 | current | |
L/s | litres/second | POSC | epicentre 2.1 | current | |
L/s2 | litres/second/second | POSC | epicentre 2.1 | current | |
L/t | litres/tonne | POSC | epicentre 2.1 | current | |
lbf | pounds force | POSC | epicentre 2.1 | current | |
lbf.ft | foot pounds force | POSC | epicentre 2.1 | current | |
lbf.ft/bbl | foot pounds force/barrel | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
lbf.ft/in | pounds force feet/inch | POSC | epicentre 2.1 | current | |
lbf.ft/in2 | foot pounds force/square inch | POSC | epicentre 2.1 | current | |
lbf.ft/lbm | foot pounds force/pound mass | POSC | epicentre 2.1 | current | |
lbf.in | inch pounds force | POSC | epicentre 2.1 | current | |
lbf.in2 | pounds force inches squared | POSC | epicentre 2.1 | current | |
lbf.in/in | pounds force inches/inch | POSC | epicentre 2.1 | current | |
lbf/in | pounds force/inch | POSC | epicentre 2.1 | current | |
lbf.s/ft2 | pounds force seconds/square foot | POSC | epicentre 2.1 | current | |
lbf.s/in2 | pounds force seconds/square inch | POSC | epicentre 2.1 | current | |
lbf/ft2 | pounds force/square foot | POSC | epicentre 2.1 | current | |
lbf/ft2(100) | pounds force/100 square foot | POSC | epicentre 2.1 | current | |
lbf/ft3 | pounds force/cubic foot | POSC | epicentre 2.1 | current | |
lbf/in2 | pounds force/square inch | POSC | epicentre 2.1 | current | |
lbf/galUS | pounds force/US gallon | POSC | epicentre 2.1 | current | |
lbm | pounds mass | POSC | epicentre 2.1 | current | |
lbm(million)/yr | million pounds mass/year | POSC | epicentre 2.1 | current | |
lbm.ft/s | foot pounds mass/second | POSC | epicentre 2.1 | current | |
lbm.ft2 | pounds mass square feet | POSC | epicentre 2.1 | current | |
lbm.ft2/s2 | pounds mass square feet/second squared | same quantity as foot pounds force | POSC | epicentre 2.1 | current |
lbm/s.ft2 | pounds mass/second square foot | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
lbm/bbl | pounds mass/barrel | POSC | epicentre 2.1 | current | |
lbm/ft | pounds mass/foot | POSC | epicentre 2.1 | current | |
lbm/ft.h | pounds mass/foot hour | POSC | epicentre 2.1 | current | |
lbm/ft.s | pounds mass/foot second | POSC | epicentre 2.1 | current | |
lbm/ft2 | pounds mass/square foot | POSC | epicentre 2.1 | current | |
lbm/ft3 | pounds mass/cubic foot | POSC | epicentre 2.1 | current | |
lbm/ft4 | pounds mass/foot fourth | POSC | epicentre 2.1 | current | |
lbm/galUK | pounds mass/UK gallon | POSC | epicentre 2.1 | current | |
lbm/galUK(1000) | pounds mass/1000 UK gallons | POSC | epicentre 2.1 | current | |
lbm/galUK.ft | pounds mass/UK gallon foot | POSC | epicentre 2.1 | current | |
lbm/galUS | pounds mass/US gallon | POSC | epicentre 2.1 | current | |
lbm/galUS(1000) | pounds mass/1000 US gallons | POSC | epicentre 2.1 | current | |
lbm/galUS.ft | pounds mass/US gallon foot | POSC | epicentre 2.1 | current | |
lbm/hp.h | pounds mass/horsepower hour | POSC | epicentre 2.1 | current | |
lbm/h | pounds mass/hour | POSC | epicentre 2.1 | current | |
lbm/h.ft | pounds mass/hour foot | POSC | epicentre 2.1 | current | |
lbm/h.ft2 | pounds mass/hour square foot | POSC | epicentre 2.1 | current | |
lbm/Mbbl | pounds mass/1000 barrels | POSC | epicentre 2.1 | current | |
lbm/min | pounds mass/minute | POSC | epicentre 2.1 | current | |
lbm/s | pounds mass/second | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
lbm/s.ft | pounds mass/second foot | POSC | epicentre 2.1 | current | |
lkSe | Sears link | 1/100 of a chain. | POSC | epicentre 2.1 | current |
lkUS | US Survey link | 1/100 of a US Survey chain | POSC | epicentre 3.0 | current |
lkBnA | British link 1895 A | 1/100 of a British Chain, 1895 A. | POSC | epicentre 3.0 | current |
lkBnB | British link 1895 B | 1/100 of a British chain, 1895 B | POSC | epicentre 3.0 | current |
lkCla | Clarke link | POSC | epicentre 2.1 | current | |
lm/m2 | lumens/square metre | POSC | epicentre 2.1 | current | |
mGer | German legal metre | Used in Namibia | POSC | epicentre 2.2 | current |
m/cm | metres/ centimetre | POSC | epicentre 2.1 | current | |
m/d | metres/day | POSC | epicentre 2.1 | current | |
m/h | metres/hour | POSC | epicentre 2.2.2 | current | |
m/km | metres/kilometre | unitless | POSC | epicentre 2.1 | current |
m/m | metres/metre | POSC | epicentre 2.1 | current | |
m/m.K | metres/metre Kelvin | POSC | epicentre 2.1 | current | |
m/m3 | metres/cubic metre | POSC | epicentre 2.1 | current | |
m/ms | metres/millisecond | POSC | epicentre 2.1 | current | |
m2/cm3 | square metres/cubic centimetre | POSC | epicentre 2.1 | current | |
m2/d.kPa | square metres/day kiloPascal | POSC | epicentre 2.1 | current | |
m2/g | square metres/gram | POSC | epicentre 2.1 | current | |
m2/h | square metres/hour | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
m2/m2 | square metres/square metre | POSC | epicentre 2.1 | current | |
m2/m3 | square metres/cubic metre | POSC | epicentre 2.1 | current | |
m3(std,0C) | cubic metres at std condition (0 deg C) | POSC | epicentre 2.1 | current | |
m3(std,15C) | cubic metres at std condition (15 deg C) | POSC | epicentre 2.1 | current | |
m3/cP.Pa.s | cubic metres/centiPoise Pascal second | POSC | epicentre 2.1 | current | |
m3/cP.d.kPa | cubic metres/centiPoise day kiloPascal | POSC | epicentre 2.1 | current | |
m3/d | cubic metres/day | POSC | epicentre 2.1 | current | |
m3/d2 | cubic metres/day/day | POSC | epicentre 2.1 | current | |
m3/d.kPa | cubic metres/day kilopascal | POSC | epicentre 2.1 | current | |
m3/g | cubic metres/gram | POSC | epicentre 2.1 | current | |
m3/h | cubic metres/hour | POSC | epicentre 2.1 | current | |
m3/ha.m | cubic metres/hectare metre | unitless | POSC | epicentre 2.1 | current |
m3/km | cubic metres/kilometre | POSC | epicentre 2.1 | current | |
m3/kW.h | cubic metres/kilowatt hour | POSC | epicentre 2.1 | current | |
m3/m | cubic metres/metre | POSC | epicentre 2.1 | current | |
m3/m3 | cubic metres/cubic metre | unitless | POSC | epicentre 2.1 | current |
m3/mol(kg) | cubic metres/mole (kilogram) | POSC | epicentre 2.1 | current | |
m3/s.m | cubic metres/second metre | POSC | epicentre 2.1 | current | |
m3/s.m2 | cubic metres/second square metre | POSC | epicentre 2.1 | current | |
m3/t | cubic metres/tonne | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
mA | milliamp | POSC | epicentre 2.1 | current | |
Ma | megayears | POSC | epicentre 2.1 | current | |
Mbbl | thousand barrels | POSC | epicentre 2.1 | current | |
Mbbl/d | thousand barrels/day | POSC | epicentre 2.1 | current | |
Mbbl.ft/d | thousand barrel feet/day | POSC | epicentre 2.1 | current | |
Mbyte | megabyte | 1024 kilobytes | POSC | epicentre 2.1 | current |
mC | millicoulomb | POSC | epicentre 2.1 | current | |
mC/m2 | millicoulombs/square metre | POSC | epicentre 2.1 | current | |
mD | millidarcies | POSC | epicentre 2.1 | current | |
mD.ft | millidarcy foot | POSC | epicentre 2.1 | current | |
mD.ft2/lbf.s | millidarcy sq feet/pound force second | POSC | epicentre 2.1 | current | |
mD.in2/lbf.s | millidarcy sq inches/pound force second | POSC | epicentre 2.1 | current | |
mD.m | millidarcy metres | POSC | epicentre 2.1 | current | |
mD/cP | millidarcies/centipoise | POSC | epicentre 2.1 | current | |
mD/Pa.s | millidarcies/Pascal second | POSC | epicentre 2.1 | current | |
mEuc | milliEuclid | per mil or per thousand | POSC | epicentre 2.1 | current |
meq | milliequivalent | POSC | epicentre 2.2.2 | current | |
meq/g | milliequivalents/ gram | POSC | epicentre 2.2.2 | current | |
meq/hg | milliequivalents/ hectogram | POSC | epicentre 2.2.2 | current | |
meq/cm3 | milliequivalents/ cubic centimeter | POSC | epicentre 2.2.2 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
MeV | millions of electron volts | POSC | epicentre 2.1 | current | |
Mflops | megaflops | 1048576 flops | POSC | epicentre 2.1 | current |
Mg | megagram | also a tonne | POSC | epicentre 2.1 | current |
mg | milligram | POSC | epicentre 2.1 | current | |
Mg/a | megagrams/year | POSC | epicentre 2.1 | current | |
Mg/d | megagrams/day | POSC | epicentre 2.1 | current | |
mg/dm3 | milligrams/cubic decimetre | POSC | epicentre 2.1 | current | |
mg/galUS | milligrams/US gallon | POSC | epicentre 2.1 | current | |
Mg/h | megagrams/hour | POSC | epicentre 2.1 | current | |
mg/J | milligrams/joule | POSC | epicentre 2.1 | current | |
mg/kg | milligrams/kilogram | POSC | epicentre 2.1 | current | |
Mg/m2 | megagrams/square metre | POSC | epicentre 2.1 | current | |
mg/m3 | milligrams/cubic metre | POSC | epicentre 2.1 | current | |
mGal | milligal | POSC | epicentre 2.1 | current | |
mH | millihenries | POSC | epicentre 2.1 | current | |
MHz | megahertz | POSC | epicentre 2.1 | current | |
mho | mhos | preferred symbol is S (siemens) | POSC | epicentre 2.1 | current |
mho/m | mhos/metre | POSC | epicentre 2.1 | current | |
mil | mil | 1/1000 of an inch | POSC | epicentre 2.1 | current |
mila | mil_6400 | Angle subtended by 1/6400 part of a circle. Approximates to 1/1000 of a radian. | POSC | epicentre 3.0 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
mil/yr | mils/year | POSC | epicentre 2.1 | current | |
mi | mile | statute mile = 5280 international feet | POSC | epicentre 2.1 | current |
miUS | U.S. Survey mile | 5280 US Survey feet | POSC | epicentre 2.1 | current |
mi2 | square miles | POSC | epicentre 2.1 | current | |
miUS2 | U.S. Survey square mile | equivalent to a section | POSC | epicentre 2.1 | current |
mi/galUK | miles/UK gallon | POSC | epicentre 2.1 | current | |
mi/galUS | miles/US gallon | POSC | epicentre 2.1 | current | |
mi/h | miles/hour | POSC | epicentre 2.1 | current | |
mi/in | miles/inch | POSC | epicentre 2.1 | current | |
min | minutes | POSC | epicentre 2.1 | current | |
mina | minutes angular | POSC | epicentre 2.1 | current | |
MJ | megajoules | POSC | epicentre 2.1 | current | |
MJ/a | megajoules/year | POSC | epicentre 2.1 | current | |
mJ/cm2 | millijoules/square centimetre | POSC | epicentre 2.1 | current | |
MJ/kg | megajoules/kilogram | POSC | epicentre 2.1 | current | |
MJ/m | megajoules/metre | POSC | epicentre 2.1 | current | |
mJ/m2 | millijoules/square metre | POSC | epicentre 2.1 | current | |
MJ/m3 | megajoules/cubic metre | POSC | epicentre 2.1 | current | |
MJ/mol(kg) | megajoules/mole (kilogram) | POSC | epicentre 2.1 | current | |
mK/m | millidegrees Kelvin/metre | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
mL | millilitre | a cubic centimetre | POSC | epicentre 2.1 | current |
mL/galUK | millilitres/UK gallon | unitless | POSC | epicentre 2.1 | current |
mL/galUS | millilitres/US gallon | unitless | POSC | epicentre 2.1 | current |
mm | millimetres | POSC | epicentre 2.1 | current | |
mm/a | millimetres/year | POSC | epicentre 2.1 | current | |
mm/mm.K | millimetres/millimetre degree Kelvin | POSC | epicentre 2.1 | current | |
mm/s | millimetres/second | POSC | epicentre 2.1 | current | |
mm2 | square millimetres | POSC | epicentre 2.1 | current | |
mm2/mm2 | square millimetres/square millimetre | a unit of tortuosity | POSC | epicentre 2.1 | current |
mm2/s | square millimetres/second | POSC | epicentre 2.1 | current | |
mm3 | cubic millimetres | POSC | epicentre 2.1 | current | |
mm3/J | cubic millimetres/joule | POSC | epicentre 2.1 | current | |
MMbbl | million barrels | POSC | epicentre 2.1 | current | |
MMbbl/acre.ft | million barrels/acre foot | POSC | epicentre 2.1 | current | |
mmHg(0C) | millimetres of Mercury at 0 deg C | POSC | epicentre 2.1 | current | |
mmho/m | millimhos/metre | POSC | epicentre 2.1 | current | |
mN | millinewtons | POSC | epicentre 2.1 | current | |
mN.m2 | millinewton metres squared | POSC | epicentre 2.1 | current | |
mN/m | millinewtons/metre | POSC | epicentre 2.1 | current | |
mN/km | millinewtons/kilometre | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
mohm | milliohm | POSC | epicentre 2.1 | current | |
mol(g) | mole (gram) | POSC | epicentre 2.1 | current | |
mol(kg) | mole (kilogram) | same as mol | POSC | epicentre 2.1 | current |
mol(kg)/h | moles (kilogram)/hour | POSC | epicentre 2.1 | current | |
mol(kg)/m3 | moles (kilogram)/cubic metre | POSC | epicentre 2.1 | current | |
mol(kg)/s | moles (kilogram)/second | POSC | epicentre 2.1 | current | |
mol(lbm) | moles (pounds mass) | POSC | epicentre 2.1 | current | |
mol(lbm)/ft3 | moles (pounds mass)/cubic foot | POSC | epicentre 2.1 | current | |
mol(lbm)/galUK | moles (pounds mass)/UK gallon | POSC | epicentre 2.1 | current | |
mol(lbm)/galUS | moles (pounds mass)/US gallon | POSC | epicentre 2.1 | current | |
mol(lbm)/h | moles (pounds mass)/hour | POSC | epicentre 2.1 | current | |
mol(lbm)/s | moles (pounds mass)/second | POSC | epicentre 2.1 | current | |
mol(lbm)/s.ft2 | moles (pounds mass)/second square foot | POSC | epicentre 2.1 | current | |
mol(lbm)/h.ft2 | moles (pounds mass)/hour square foot | POSC | epicentre 2.1 | current | |
MPa | megapascals | POSC | epicentre 2.1 | current | |
Mpsi | mega pounds per square inch | assumed to be psia | POSC | epicentre 2.1 | current |
ms | milliseconds | POSC | epicentre 2.1 | current | |
mS | millisiemen | POSC | epicentre 2.1 | current | |
mS/m | millisiemens/metre | POSC | epicentre 2.1 | current | |
ms/s | milliseconds/second | unitless | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
ms/in | milliseconds/inch | POSC | epicentre 2.1 | current | |
ms/cm | milliseconds/centimetre | POSC | epicentre 2.1 | current | |
Msm3 | mega standard cubic metres 15C | POSC | epicentre 2.2.1 | current | |
mT | milliteslas | POSC | epicentre 2.1 | current | |
mV | millivolts | POSC | epicentre 2.1 | current | |
mW | milliwatt | POSC | epicentre 2.1 | current | |
MW | megawatts | POSC | epicentre 2.1 | current | |
MW.h | megawatt hours | POSC | epicentre 2.1 | current | |
MW.h/kg | megawatt hours/kilogram | POSC | epicentre 2.1 | current | |
MW.h/m3 | megawatt hours/cubic metre | POSC | epicentre 2.1 | current | |
mW/m2 | milliwatts/square metres | POSC | epicentre 2.1 | current | |
mWb | milliwebers | POSC | epicentre 2.1 | current | |
MY | megayears | POSC | epicentre 2.1 | current | |
N/mm2 | newtons/square millimetre | POSC | epicentre 2.1 | current | |
nautmi | nautical mile | POSC | epicentre 2.1 | current | |
nC | nanocoulomb | POSC | epicentre 2.1 | current | |
nEuc | nanoeuclid | parts per billion | POSC | epicentre 2.1 | current |
nm | nanometres | POSC | epicentre 2.1 | current | |
ns | nanoseconds | POSC | epicentre 2.1 | current | |
ns/m | nanoseconds/metre | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
ns/ft | nanoseconds/foot | POSC | epicentre 2.1 | current | |
nW | nanowatts | POSC | epicentre 2.1 | current | |
N/m2 | newtons/square metre | POSC | epicentre 2.1 | current | |
N.m | newton metre | POSC | epicentre 2.1 | current | |
N.m/m | newton metres/metre | POSC | epicentre 2.1 | current | |
N.s/m2 | newton seconds/metre squared | POSC | epicentre 2.1 | current | |
(N/m)4/kg.m3 | newton/metre fourth/kilogram metre cubed | POSC | epicentre 2.1 | current | |
Oe | oersted | 100000 gamma | POSC | epicentre 2.1 | current |
ohm.cm | ohm centimetres | POSC | epicentre 2.1 | current | |
oz(av) | avoirdupois ounces | POSC | epicentre 2.1 | current | |
oz(troy) | troy ounces | POSC | epicentre 2.1 | current | |
P | poise | POSC | epicentre 2.1 | current | |
Pa(g) | pascal gauge | pascal - 1 atm. | POSC | epicentre 2.1 | current |
Pa.s2/m3 | pascal seconds squared/ cubic metre | POSC | epicentre 2.2 | current | |
pC | picocoulomb | POSC | epicentre 2.1 | current | |
pdl | poundals | POSC | epicentre 2.1 | current | |
pdl.cm2 | poundal centimetre squared | POSC | epicentre 2.1 | current | |
pdl.ft | foot poundal | POSC | epicentre 2.1 | current | |
pdl/cm | poundals/centimetre | POSC | epicentre 2.1 | current | |
permil | per mille | same as parts per thousand, milliEuclid | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
ppk | parts per thousand | POSC | epicentre 2.1 | current | |
ppm | parts per million | POSC | epicentre 2.1 | current | |
pPa | picopascal | POSC | epicentre 2.1 | current | |
psf | pounds/square foot | preferred is lbf/ft2 | POSC | epicentre 2.1 | current |
psi | pounds/square inch | preferred is lbf/in2 | POSC | epicentre 2.1 | current |
psi.d/bbl | pounds per square inch days/barrel | POSC | epicentre 2.1 | current | |
psi/ft | pounds/square inch per foot | POSC | epicentre 2.1 | current | |
psi/ft(100) | pounds/square inch per 100 feet | POSC | epicentre 2.1 | current | |
psia | pounds/square inch absolute | POSC | epicentre 2.1 | current | |
psig | pounds/square inch gauge | psia - 1atm. | POSC | epicentre 2.1 | current |
psi2/cP | pounds/square inch squared/ centipoise | POSC | epicentre 2.1 | current | |
psi2.d/cp.ft3 | psi squared days/ centipoise cubic foot | POSC | epicentre 2.2 | current | |
psi2.d2/cp.ft6 | (psi days/cubic foot)squared/centipoise | POSC | epicentre 2.2 | current | |
ptUK/hp.hr | UK pints/horsepower hour | POSC | epicentre 2.1 | current | |
ptUK/Mbbl | UK pints/1000 barrels | POSC | epicentre 2.1 | current | |
ptUS | US pints | POSC | epicentre 2.1 | current | |
qtUK | UK quarts | POSC | epicentre 2.1 | current | |
qtUS | US quarts | POSC | epicentre 2.1 | current | |
quad | quads | energy or work | POSC | epicentre 2.1 | current |
quad/yr | quads/year | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
rd | rad | radiation dose absorbed | POSC | epicentre 2.1 | current |
rev/min | revolutions/minute | POSC | epicentre 2.1 | current | |
rev/s | revolutions/second | POSC | epicentre 2.1 | current | |
rpm | revolutions/minute | POSC | epicentre 2.1 | current | |
rpm/s | revolutions/minute per second | POSC | epicentre 2.1 | current | |
s/cm | seconds/centimetre | POSC | epicentre 2.1 | current | |
s/ft | seconds/foot | POSC | epicentre 2.1 | current | |
s/in | seconds/inch | POSC | epicentre 2.1 | current | |
sack94 | sacks | A API sack (of cement) weighing 94 lbs, and having a volume of 1 cubic foot. | POSC | epicentre 2.2 | current |
sm3/sm3 | std cubic metres/ std cubic metres | POSC | epicentre 2.2.1 | current | |
sm3/ksm3 | std cubic metres/ 1000 std cubic metre | POSC | epicentre 2.2.1 | current | |
scf(60F) | std cubic feet at 60 deg F | 60 degrees F is almost 15 degrees C | POSC | epicentre 2.1 | current |
Mscf(60F) | thousand cubic feet at 60 deg F | POSC | epicentre 2.1 | current | |
Mcf | thousand cubic feet | not at standard conditions | POSC | epicentre 2.1 | current |
MMcf | million cubic feet | not at standard conditions | POSC | epicentre 2.1 | current |
bcf | billion cubic feet | not at standard conditions | POSC | epicentre 2.1 | current |
tcf | trillion cubic feet | not at standard conditions | POSC | epicentre 2.1 | current |
MMscf(60F) | million standard cubic feet at 60 deg F | POSC | epicentre 2.1 | current | |
scm(15C)/d | std cubic metres at 15 deg C/day | POSC | epicentre 2.1 | current | |
scm15/stb60 | std cubic metres / stock tank barrel | scm at 15 degC, stb at 60 deg F | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
Mscm(15C)/d | thousand std cubic metres, 15 degC/day | deprecated. Use ksm3/d | POSC | epicentre 2.2.1 | deprecated |
MMscm(15C)/d | million std cubic metres, 15 degC/day | POSC | epicentre 2.1 | current | |
scf(60F)/ft2 | std cubic feet at 60 deg F/square foot | POSC | epicentre 2.1 | current | |
scf(60F)/ft3 | std cubic feet at 60 deg Ft/cubic foot | POSC | epicentre 2.1 | current | |
scf(60F)/bbl | std cubic feet at 60 deg F/barrel | POSC | epicentre 2.1 | current | |
Mscf60/stb60 | thousand std cu ft/ stock tank barrel | measured at 60 deg F | POSC | epicentre 2.1 | current |
MMscf60/stb60 | million std cu ft/ stock tank barrel | measured at 60 deg F | POSC | epicentre 2.1 | current |
scf(60F)/d | standard cubic feet/day | POSC | epicentre 2.1 | current | |
Mscf(60F)/d | thousand standard cubic feet/day | POSC | epicentre 2.1 | current | |
MMscf(60F)/d | million standard cubic feet/day | POSC | epicentre 2.1 | current | |
stb(60F) | stock tank barrel at 60 deg F | POSC | epicentre 2.1 | current | |
Mstb(60F) | thousand stock tank barrels 60 F | POSC | epicentre 2.1 | current | |
MMstb(60F) | million stock tank barrels 60 deg F | POSC | epicentre 2.1 | current | |
stb(60F)/acre | stock tank barrels, 60 deg F/acre | POSC | epicentre 2.1 | current | |
MMstb/acre | million stock tank barrels 60 deg F/acre | POSC | epicentre 2.1 | current | |
stb(60F)/bbl | stock tank barrels, 60 deg F/barrel | POSC | epicentre 2.1 | current | |
stb60/scm15 | stock tank barrels/ std cu metres | stb at 60 deg F, scm at 15 deg C | POSC | epicentre 2.1 | current |
stb60/Mscm15 | stock tank barrels/ 1000 std cu metres | stb at 60 deg F, scm at 15 deg C | POSC | epicentre 2.1 | current |
stb60/MMscm15 | stock tank barrels/ million std cu mts | stb at 60 deg F, scm at 15 deg C | POSC | epicentre 2.1 | current |
stb60/Mscf60 | stock tank barrels/ 1000 std cu ft | measured at 60 deg F | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
stb60/MMscf60 | stock tank barrels/ million std cu ft | measured at 60 deg F | POSC | epicentre 2.1 | current |
stb(60F)/d | stock tank barrels, 60 deg F/day | POSC | epicentre 2.1 | current | |
Mstb(60F)/d | thousand stock tank barrels,60 deg F/day | POSC | epicentre 2.1 | current | |
MMstb(60F)/d | million stock tank barrels, 60 deg F/day | POSC | epicentre 2.1 | current | |
MMstb/acre.ft | million stbs, 60 deg F/acre foot | POSC | epicentre 2.1 | current | |
bbl/stb(60F) | barrels/stock tank barrel, 60 deg F | POSC | epicentre 2.1 | current | |
acre.ft/MMstb | acre feet/million stbs, 60 deg F | POSC | epicentre 2.1 | current | |
seca | seconds angular | POSC | epicentre 2.1 | current | |
section | section | U.S. Statutory square mile | POSC | epicentre 2.1 | current |
sigma | capture unit | same as cu | POSC | epicentre 2.1 | current |
sq ft | square feet | preferred is ft2 | POSC | epicentre 3.0 | deprecated |
sq in | square inches | preferred is in2 | POSC | epicentre 3.0 | deprecated |
sq mi | square miles | preferred is mi2 | POSC | epicentre 3.0 | deprecated |
sq yd | square yards | preferred is yd2 | POSC | epicentre 3.0 | deprecated |
t | tonne | 1000 kilograms, or Mg = million grams | POSC | epicentre 2.1 | current |
t/a | tonnes/year | POSC | epicentre 2.1 | current | |
t/d | tonnes/day | POSC | epicentre 2.1 | current | |
t/h | tonnes/hour | POSC | epicentre 2.1 | current | |
talbot | talbot | lumen. second | POSC | epicentre 2.1 | current |
therm | therms | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
therm/ft3 | therms/cubic foot | POSC | epicentre 2.1 | current | |
therm/galUK | therms/UK gallon | POSC | epicentre 2.1 | current | |
therm/lbm | therms/pound mass | POSC | epicentre 2.1 | current | |
TJ | terajoules | POSC | epicentre 2.1 | current | |
TJ/a | terajoules/year | POSC | epicentre 2.1 | current | |
ton of refrig | tons of refrigeration | POSC | epicentre 2.1 | current | |
tonfUK | UK tons force | POSC | epicentre 2.1 | current | |
tonfUK.ft2 | UK ton feet squared | POSC | epicentre 2.1 | current | |
tonfUK/ft | UK tons force/foot | POSC | epicentre 2.1 | current | |
tonfUS | US tons force | POSC | epicentre 2.1 | current | |
tonfUS.ft | US tons force feet | POSC | epicentre 2.1 | current | |
tonfUS.ft2 | US tons force feet squared | POSC | epicentre 2.1 | current | |
tonfUS.mi | US tons force/mile | POSC | epicentre 2.1 | current | |
tonfUS.mi/bbl | US ton force miles/barrel | POSC | epicentre 2.1 | current | |
tonfUS.mi/ft | US tons force miles/foot | POSC | epicentre 2.1 | current | |
tonfUS/ft | US tons force/foot | POSC | epicentre 2.1 | current | |
tonfUS/ft2 | US tons force/square foot | POSC | epicentre 2.1 | current | |
tonfUS/in2 | US tons force/square inch | POSC | epicentre 2.1 | current | |
tonUK | UK tons | long ton. different than a tonne | POSC | epicentre 2.1 | current |
tonUK/d | UK tons/day | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
tonUK/h | UK tons/hour | POSC | epicentre 2.1 | current | |
tonUK/min | UK tons/minute | POSC | epicentre 2.1 | current | |
tonUK/a | UK tons/year | POSC | epicentre 2.1 | current | |
tonUS | US tons | also called a short ton | POSC | epicentre 2.1 | current |
tonUS/d | US tons/day | POSC | epicentre 2.1 | current | |
tonUS/ft2 | US tons/square foot | POSC | epicentre 2.1 | current | |
tonUS/h | US tons/hour | POSC | epicentre 2.1 | current | |
tonUS/min | US tons/minute | POSC | epicentre 2.1 | current | |
tonUS/a | US tons/year | POSC | epicentre 2.1 | current | |
torr | torr | POSC | epicentre 2.1 | current | |
TW | terawatts | POSC | epicentre 2.1 | current | |
TW.h | terrawatt hours | POSC | epicentre 2.1 | current | |
ubar | microbars | POSC | epicentre 2.1 | current | |
uA | microampere | POSC | epicentre 2.1 | current | |
uC | microcoulomb | POSC | epicentre 2.1 | current | |
ucal/s.cm2 | microcalories/second square centimetre | POSC | epicentre 2.1 | current | |
uEuc | microEuclids | parts per million | POSC | epicentre 2.1 | current |
uF | microfarads | POSC | epicentre 2.1 | current | |
uF/m | microfarads/metre | POSC | epicentre 2.1 | current | |
ug | micrograms | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
ug/cm3 | micrograms/cubic centimetre | POSC | epicentre 2.1 | current | |
uH/m | microhenries/metre | POSC | epicentre 2.1 | current | |
um | microns | a micron is a micrometre. micron is the customary term. | POSC | epicentre 2.1 | current |
um2 | square microns | POSC | epicentre 2.1 | current | |
um2.m | square micron metres | POSC | epicentre 2.1 | current | |
umHg(0C) | microns of Mercury at 0 deg C | POSC | epicentre 2.1 | current | |
unitless | unitless | POSC | epicentre 2.1 | current | |
uohm | microohm | POSC | epicentre 2.1 | current | |
uPa | micropascal | POSC | epicentre 2.1 | current | |
urad | microradian | POSC | epicentre 2.2 | current | |
us | microsecond | POSC | epicentre 2.1 | current | |
us/ft | microseconds/foot | POSC | epicentre 2.1 | current | |
us/m | microseconds/metre | POSC | epicentre 2.1 | current | |
uV | microvolts | POSC | epicentre 2.1 | current | |
uW/m3 | microwatts/cubic metre | POSC | epicentre 2.1 | current | |
V/dB | volts/decibel | POSC | epicentre 2.1 | current | |
volpercent | volume percent | unitless | POSC | epicentre 2.1 | current |
volppm | volume parts per million | unitless | POSC | epicentre 2.1 | current |
W/cm2 | watts/square centimetre | POSC | epicentre 2.1 | current | |
W/W | watts/watt | unitless | POSC | epicentre 2.1 | current |
ref_customary_unit_of_measure | . | ![]() |
acronym | identifier | description | source | version | status |
---|---|---|---|---|---|
W/kW | watts/kilowatt | unitless | POSC | epicentre 2.1 | current |
Wb/mm | webers/millimetre | POSC | epicentre 2.1 | current | |
wk | weeks | POSC | epicentre 2.1 | current | |
wtpercent | weight percent | unitless | POSC | epicentre 2.1 | current |
wtppm | weight parts per million | unitless | POSC | epicentre 2.1 | current |
yd | yards | POSC | epicentre 2.1 | current | |
ydIm | imperial yard | Deprecated. Use ydCla | POSC | epicentre 3.0 | deprecated |
ydInd | Indian yard | POSC | epicentre 2.1 | current | |
ydInd(37) | Indian yard (1937) | POSC | epicentre 3.0 | current | |
ydInd(62) | Indian yard (1962) | POSC | epicentre 3.0 | current | |
ydInd(75) | Indian yard (1975) | POSC | epicentre 3.0 | current | |
ydSe | Sears yard | POSC | epicentre 2.1 | current | |
ydCla | Clarkes yard | Also known as an Imperial yard. | POSC | epicentre 3.0 | current |
ydBnA | Benoits yard (1895 A) | POSC | epicentre 3.0 | current | |
ydBnB | Benoits yard (1895 B) | POSC | epicentre 3.0 | current | |
yd2 | square yards | POSC | epicentre 2.1 | current | |
yr(100k) | 100000 years | POSC | epicentre 2.1 | current |