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NIST Guide to the SI, Appendix B.9: Factors for units listed by kind of quantity or field of science

ACCELERATION
ANGLE
AREA AND SECOND MOMENT OF AREA
CAPACITY (see VOLUME)
DENSITY (that is, MASS DENSITY - see MASS DIVIDED BY VOLUME)
ELECTRICITY and MAGNETISM
ENERGY (includes WORK)
ENERGY DIVIDED BY AREA TIME
FLOW (see MASS DIVIDED BY TIME or VOLUME DIVIDED BY TIME)
FORCE
FORCE DIVIDED BY AREA (see PRESSURE)
FORCE DIVIDED BY LENGTH
HEAT
Available Energy
Coefficient of Heat Transfer
Density of Heat
Density of Heat Flow Rate
Fuel Consumption
Heat Capacity and Entropy
Heat Flow Rate
Specific Heat Capacity and
Specific Entropy
Thermal Conductivity
Thermal Diffusivity
Thermal Insulance
Thermal Resistance
Thermal Resistivity
LENGTH
LIGHT
MASS and MOMENT OF INERTIA
MASS DENSITY (see MASS DIVIDED BY VOLUME)
MASS DIVIDED BY AREA
MASS DIVIDED BY CAPACITY see MASS DIVIDED BY VOLUME)
MASS DIVIDED BY LENGTH
MASS DIVIDED BY TIME (includes FLOW)
MASS DIVIDED BY VOLUME (includes MASS DENSITY and MASS CONCENTRATION)
MOMENT OF FORCE or TORQUE
MOMENT OF FORCE or TORQUE, DIVIDED BY LENGTH
PERMEABILITY
POWER
PRESSURE or STRESS (FORCE DIVIDED BY AREA)
RADIOLOGY
SPEED (see VELOCITY)
STRESS (see PRESSURE)
TEMPERATURE
TEMPERATURE INTERVAL
TIME
TORQUE (see MOMENT OF FORCE)
VELOCITY (includes SPEED)
VISCOSITY, DYNAMIC
VISCOSITY, KINEMATIC
VOLUME (includes CAPACITY)
VOLUME DIVIDED BY TIME (includes FLOW)
WORK (see ENERGY)

Caution: The units listed in column 1 are in general not to be used in NIST publications, with the exception of those few in italic type.
Factors in boldface are exact

ACCELERATION
To convert fromtoMultiply by
acceleration of free fall, standard (gn)meter per second squared (m/s2)9.806 65 E+00
foot per second squared (ft/s2)meter per second squared (m/s2)3.048E-01
gal (Gal)meter per second squared (m/s2)1.0E-02
inch per second squared (in/s2)meter per second squared (m/s2)2.54E-02

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ANGLE
To convert fromtoMultiply by
degree (°)radian (rad)1.745 329E-02
gon (also called grade) (gon)radian (rad)1.570 796E-02
gon (also called grade) (gon)degree (°)9.0E-01
milradian (rad)9.817 477E-04
mildegree (°)5.625E-02
minute (′ )radian (rad)2.908 882E-04
revolution (r)radian (rad)6.283 185E+00
second (″ )radian (rad)4.848 137E-06

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AREA AND SECOND MOMENT OF AREA
To convert fromtoMultiply by
acre (based on U.S. survey foot)square meter (m2)4.046 873E+03
are (a)square meter (m2)1.0E+02
barn (b)square meter (m2)1.0E-28
circular milsquare meter (m2)5.067 075E-10
circular milsquare millimeter (mm2)5.067 075E-04
foot to the fourth power (ft416meter to the fourth power (m4)8.630 975E-03
hectare (ha)square meter (m2)1.0E+04
inch to the fourth power (in4) 16meter to the fourth power (m4)4.162 314E-07
square foot (ft2)square meter (m2)9.290 304E-02
square inch (in2)square meter (m2)6.4516E-04
square inch (in2)square centimeter (cm2)6.4516E+00
square mile (mi2)square meter (m2)2.589 988E+06
square mile (mi2)square kilometer (km2)2.589 988E+00
square mile (based on U.S. survey foot) (mi2) 7square meter (m2)2.589 998E+06
square mile (based on U.S. survey foot) (mi2) 7square kilometer (km2)2.589 998E+00
square yard (yd2)square meter (m2)8.361 274E-01
CAPACITY (see VOLUME)

DENSITY (that is, MASS DENSITY - see MASS DIVIDED BY VOLUME)

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ELECTRICITY and MAGNETISM
To convert fromtoMultiply by
abampereampere (A)1.0E+01
abcoulombcoulomb(C)1.0E+01
abfaradfarad (F)1.0E+09
abhenryhenry (H)1.0E-09
abmhosiemens (S)1.0E+09
abohmohm (Ω)1.0E-09
abvoltvolt1.0E-08
ampere hour (A · h)coulomb(C)3.6E+03
biot (Bi)ampere (A)1.0E+01
EMU of capacitance (abfarad)farad (F)1.0E+09
EMU of current (abampere)ampere (A)1.0E+01
EMU of electric potential (abvolt)volt (V)1.0E-08
EMU of inductance (abhenry)henry (H)1.0E-09
EMU of resistance (abohm)ohm (Ω)1.0E-09
ESU of capacitance (statfarad)farad (F)1.112 650E-12
ESU of current (statampere)ampere (A)3.335 641E-10
ESU of electric potential (statvolt)volt (V)2.997 925E+02
ESU of inductance (stathenry)henry (H)8.987 552E+11
ESU of resistance (statohm)ohm (Ω)8.987 552E+11
faraday (based on carbon 12)coulomb(C)9.648 531E+04
franklin (Fr)coulomb(C)3.335 641E-10
gamma (γ)tesla (T)1.0E-09
gauss (Gs, G)tesla (T)1.0E-04
gilbert (Gi)ampere (A)7.957 747E-01
maxwell (Mx)weber (Wb)1.0E-08
mhosiemens (S)1.0E+00
oersted (Oe)ampere per meter (A/m)7.957 747E+01
ohm centimeter (Ω · cm)ohm meter (Ω · m)1.0E-02
ohm circular-mil per footohm meter (Ω · m)1.662 426E-09
ohm circular-mil per footohm square millimeter per meter (Ω · mm2/m)1.662 426E-03
statampereampere (A)3.335 641E-10
statcoulombcoulomb (C)3.335 641E-10
statfaradfarad (F)1.112 650E-12
stathenryhenry (H)8.987 552E+11
statmhosiemens (S)1.112 650E-12
statohmohm(Ω)8.987 552E+11
statvoltvolt (V)2.997 925E+02
unit poleweber (Wb)1.256 637E-07

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ENERGY (includes WORK)
To convert fromtoMultiply by
British thermal unitIT (BtuIT) 9joule (J)1.055 056E+03
British thermal unitth (Btuth) 9joule (J)1.054 350E+03
British thermal unit (mean) (Btu)joule (J)1.055 87E+03
British thermal unit (39 °F) (Btu)joule (J)1.059 67E+03
British thermal unit (59 °F) (Btu)joule (J)1.054 80E+03
British thermal unit (60 °F) (Btu)joule (J)1.054 68E+03
calorieIT (calIT) 10joule (J)4.1868E+00
calorieth (calth) 10joule (J)4.184E+00
calorie (mean) (cal)joule (J)4.190 02E+00
calorie (15 °C) (cal15)joule (J)4.185 80E+00
calorie (20 °C) (cal20)joule (J)4.181 90E+00
calorieIT, kilogram (nutrition) 11joule (J)4.1868E+03
calorieth, kilogram (nutrition) 11joule (J)4.184E+03
calorie (mean), kilogram (nutrition) 11joule (J)4.190 02E+03
electronvolt (eV)joule (J)1.602 177E-19
erg (erg)joule (J)1.0E-07
foot poundaljoule (J)4.214 011E-02
foot pound-force (ft · lbf)joule (J)1.355 818E+00
kilocalorieIT (kcalIT)joule (J)4.1868E+03
kilocalorieth (kcalth)joule (J)4.184E+03
kilocalorie (mean) (kcal)joule (J)4.190 02E+03
kilowatt hour (kW · h)joule (J)3.6E+06
kilowatt hour (kW · h)megajoule (MJ)3.6E+00
quad (1015 BtuIT) 9joule (J)1.055 056E+18
therm (EC) 24joule (J)1.055 06E+08
therm (U.S.) 24joule (J)1.054 804E+08
ton of TNT (energy equivalent) 25joule (J)4.184E+09
watt hour (W · h)joule (J)3.6E+03
watt second (W · s)joule (J)1.0E+00

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ENERGY DIVIDED BY AREA TIME
To convert fromtoMultiply by
erg per square centimeter second [erg/(cm2 · s)]watt per square meter (W/m2)1.0E-03
watt per square centimeter (W/cm2)watt per square meter (W/m2)1.0E+04
watt per square inch (W/in2)watt per square meter (W/m2)1.550 003E+03
FLOW (see MASS DIVIDED BY TIME or VOLUME DIVIDED BY TIME)

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FORCE
To convert fromtoMultiply by
dyne (dyn)newton (N)1.0E-05
kilogram-force (kgf)newton (N)9.806 65E+00
kilopond (kilogram-force) (kp)newton (N)9.806 65E+00
kip (1 kip = 1000 lbf)newton (N)4.448 222E+03
kip (1 kip = 1000 lbf)kilonewton (kN)4.448 222E+00
ounce (avoirdupois)-force (ozf)newton (N)2.780 139E-01
poundalnewton (N)1.382 550E-01
pound-force (lbf) 23newton (N)4.448 222E+00
pound-force per pound (lbf/lb) (thrust to mass ratio)newton per kilogram (N/kg)9.806 65E+00
ton-force (2000 lbf)newton (N)8.896 443E+03
ton-force (2000 lbf)kilonewton (kN)8.896 443E+00
FORCE DIVIDED BY AREA (see PRESSURE)

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FORCE DIVIDED BY LENGTH
To convert fromtoMultiply by
pound-force per foot (lbf/ft)newton per meter (N/m)1.459 390E+01
pound-force per inch (lbf/in)newton per meter (N/m)1.751 268E+02

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HEAT - Available Energy
To convert fromtoMultiply by
British thermal unitIT per cubic foot (BtuIT/ft3)joule per cubic meter (J/m3)3.725 895E+04
British thermal unitth per cubic foot (Btuth/ft3)joule per cubic meter (J/m3)3.723 403E+04
British thermal unitIT per pound (BtuIT/lb)joule per kilogram (J/kg)2.326E+03
British thermal unitth per pound (Btuth/lb)joule per kilogram (J/kg)2.324 444E+03
calorieIT per gram (calIT/g)joule per kilogram (J/kg)4.1868E+03
calorieth per gram (calth/g)joule per kilogram (J/kg)4.184E+03

 

Coefficient of Heat Transfer
To convert fromtoMultiply by
British thermal unitIT per hour square foot degree Fahrenheit [BtuIT/(h · ft2 · °F)]watt per square meter kelvin [W/(m2 · K)]5.678 263E+00
British thermal unitth per hour square foot degree Fahrenheit [Btuth/(h · ft2 · °F)]watt per square meter kelvin [W/(m2 · K)]5.674 466E+00
British thermal unitIT per second square foot degree Fahrenheit [BtuIT/(s · ft2 · °F)]watt per square meter kelvin [W/(m2 · K)]2.044 175E+04
British thermal unitth per second square foot degree Fahrenheit [Btuth/(s · ft2 · °F)]watt per square meter kelvin [W/(m2 · K)]2.042 808E+04

 

Density of Heat
To convert fromtoMultiply by
British thermal unitIT per square foot (BtuIT/ft2)joule per square meter (J/m2)  1.135 653E+04
British thermal unitth per square foot (Btuth/ft2)joule per square meter (J/m2)  1.134 893E+04
calorieth per square centimeter (calth/cm2)joule per square meter (J/m2)  4.184E+04
langley (calth/cm2)joule per square meter (J/m2)  4.184E+04

 

Density of Heat Flow Rate
To convert fromtoMultiply by
British thermal unitIT per square foot hour [BtuIT/(ft2 · h)]watt per square meter (W/m2)  3.154 591E+00
British thermal unitth per square foot hour [Btuth/(ft2 · h)]watt per square meter (W/m2)  3.152 481E+00
British thermal unitth per square foot minute [Btuth/(ft2 · min)]watt per square meter (W/m2)  1.891 489E+02
British thermal unitIT per square foot second [BtuIT/(ft2 · s)]watt per square meter (W/m2)  1.135 653E+04
British thermal unitth per square foot second [Btuth/(ft2 · s)]watt per square meter (W/m2)  1.134 893E+04
British thermal unitth per square inch second [Btuth/(in 2 · s)]watt per square meter (W/m2)  1.634 246E+06
calorieth per square centimeter minute [calth/(cm2 · min)]watt per square meter (W/m2)  6.973 333E+02
calorieth per square centimeter second [calth/(cm2 · s)]watt per square meter (W/m2))  4.184E+04

 

Fuel Consumption
To convert fromtoMultiply by
gallon (U.S.) per horsepower hour [gal/(hp · h)]cubic meter per joule (m3/J)1.410 089E-09
gallon (U.S.) per horsepower hour [gal/(hp · h)]liter per joule (L/J)1.410 089E-06
mile per gallon (U.S.) (mpg) (mi/gal)meter per cubic meter (m/m3)4.251 437E+05
mile per gallon (U.S.) (mpg) (mi/gal)kilometer per liter (km/L)4.251 437E-01
mile per gallon (U.S.) (mpg) (mi/gal) 21liter per 100 kilometer (L/100 km)divide 235.215 by number of miles per gallon
pound per horsepower hour [lb/(hp · h)]kilogram per joule (kg/J)1.689 659E-07

 

Heat Capacity and Entropy
To convert fromtoMultiply by
British thermal unitIT per degree Fahrenheit (BtuIT/°F)joule per kelvin (J/K)1.899 101E+03
British thermal unitth per degree Fahrenheit (Btuth/°F)joule per kelvin (J/K)1.897 830E+03
British thermal unitIT per degree Rankine (BtuIT/°R)joule per kelvin (J/K)1.899 101E+03
British thermal unitth per degree Rankine (Btuth/°R)joule per kelvin (J/K)1.897 830E+03

 

Heat Flow Rate
To convert fromtoMultiply by
British thermal unitIT per hour (BtuIT/h)watt (W)2.930 711E-01
British thermal unitth per hour (Btuth/h)watt (W)2.928 751E-01
British thermal unitth per minute (Btuth/min)watt (W)1.757 250E+01
British thermal unitIT per second (BtuIT/s)watt (W)1.055 056E+03
British thermal unitth per second (Btuth/s)watt (W)1.054 350E+03
calorieth per minute (calth/min)watt (W)6.973 333E-02
calorieth per second (calth/s)watt (W)4.184E+00
kilocalorieth per minute (kcalth/min)watt (W)6.973 333E+01
kilocalorieth per second (kcalth/s)watt (W)4.184E+03
ton of refrigeration (12 000 BtuIT/h)watt (W)3.516 853E+03

 

Specific Heat Capacity and Specific Entropy
To convert fromtoMultiply by
British thermal unitIT per pound degree Fahrenheit [BtuIT/(lb · °F)]joule per kilogram kelvin [J/(kg · K)]4.1868E+03
British thermal unitth per pound degree Fahrenheit [Btuth/(lb · °F)]joule per kilogram kelvin [J/(kg · K)]4.184E+03
British thermal unitIT per pound degree Rankine [BtuIT/(lb · °R)]joule per kilogram kelvin [J/(kg · K)]4.1868E+03
British thermal unitth per pound degree Rankine [Btuth/(lb · °R)]joule per kilogram kelvin [J/(kg · K)]4.184E+03
calorieIT per gram degree Celsius [calIT/(g · °C)]joule per kilogram kelvin [J/(kg · K)]4.1868E+03
calorieth per gram degree Celsius [calth/(g · °C)]joule per kilogram kelvin [J/(kg · K)]4.184E+03
calorieIT per gram kelvin [calIT/(g · K)]joule per kilogram kelvin [J/(kg · K)]4.1868E+03
calorieth per gram kelvin [calth/(g · K)]joule per kilogram kelvin [J/(kg · K)]4.184E+03

 

Thermal Conductivity
To convert fromtoMultiply by
Britsh thermal unitIT foot per hour square foot degree Fahrenheit [BtuIT · ft/(h · ft2 · °F)]watt per meter kelvin [W/(m · K)]1.730 735E+00
Britsh thermal unitth foot per hour square foot degree Fahrenheit [Btuth · ft/(h · ft2 · °F)]watt per meter kelvin [W/(m · K)]1.729 577E+00
Britsh thermal unitIT inch per hour square foot degree Fahrenheit [BtuIT · in/(h · ft2 · °F)]watt per meter kelvin [W/(m · K)]1.442 279E-01
Britsh thermal unitth inch per hour square foot degree Fahrenheit [Btuth · in/(h · ft2 · °F)]watt per meter kelvin [W/(m · K)]1.441 314E-01
Britsh thermal unitIT inch per second square foot degree Fahrenheit [BtuIT · in/(s · ft2 · °F)]watt per meter kelvin [W/(m · K)]5.192 204E+02
Britsh thermal unitth inch per second square foot degree Fahrenheit [Btuth · in/(s · ft2 · °F)]watt per meter kelvin [W/(m · K)]5.188 732E+02
calorieth per centimeter second degree Celsius [calth/(cm · s · °C)]watt per meter kelvin [W/(m · K)]4.184E+02

 

Thermal Diffusivity
To convert fromtoMultiply by
square foot per hour (ft2/h)square meter per second (m2/s)2.580 64 E-05
Thermal Insulance
To convert fromtoMultiply by
closquare meter kelvin per watt (m2 · K/W)1.55E-01
degree Fahrenheit hour square foot per British thermal unitIT(°F · h · ft2/BtuIT)square meter kelvin per watt (m2 · K/W)1.761 102E-01
degree Fahrenheit hour square foot per British thermal unitth(°F · h · ft2/Btuth)square meter kelvin per watt (m2 · K/W)1.762 280E-01

 

Thermal Resistance
To convert fromtoMultiply by
degree Fahrenheit hour per British thermal unitIT(°F · h/BtuIT)kelvin per watt (K/W)1.895 634E+00
degree Fahrenheit hour per British thermal unitth(°F · h/Btuth)kelvin per watt (K/W)1.896 903E+00
degree Fahrenheit second per British thermal unitIT(°F · s/BtuIT)kelvin per watt (K/W)5.265 651E-04
degree Fahrenheit second per British thermal unitth(°F · s/Btuth)kelvin per watt (K/W)5.269 175E-04

 

Thermal Resistivity
To convert fromtoMultiply by
degree Fahrenheit hour square foot per British thermal unitIT inch [°F · h · ft2/(BtuIT · in)]meter kelvin per watt (m · K/W)6.933 472E+00
degree Fahrenheit hour square foot per British thermal unitth inch [°F · h · ft2/(Btuth · in)]meter kelvin per watt (m · K/W)6.938 112E+04

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LENGTH
To convert fromtoMultiply by
ångström(Å)meter (m)1.0E-10
ångström(Å)nanometer (nm)1.0E-01
astronomical unit (ua)meter (m)1.495 979E+11
chain (based on U.S. survey foot) (ch) 7meter (m)2.011 684E+01
fathom (based on U.S. survey foot) 7meter (m)1.828 804E+00
fermimeter (m)1.0E-15
fermifemtometer (fm)1.0E+00
foot (ft)meter (m)3.048E-01
foot (U.S. survey) (ft) 7meter (m)3.048 006E-01
inch (in)meter (m)2.54E-02
inch (in)centimeter (cm)2.54E+00
kayser(K)reciprocal meter (m-1)1E+02
light year (l. y.) 18meter (m)9.460 73E+15
microinchmeter (m)2.54E-08
microinchmicrometer (μm)2.54E-02
micron (μ)meter (m)1.0E-06
micron (μ)micrometer (μm)1.0E+00
mil (0.001 in)meter (m)2.54E-05
mil (0.001 in)millimeter (mm)2.54E-02
mile (mi)meter (m)1.609 344E+03
mile (mi)kilometer (km)1.609 344E+00
mile (based on U.S. survey foot) (mi) 7meter (m)1.609 347E+03
mile (based on U.S. survey foot) (mi) 7kilometer (km)1.609 347E+00
mile, nautical 20meter (m)1.852E+03
parsec (pc)meter (m)3.085 678E+16
pica (computer) (1/6 in)meter (m)4.233 333E-03
pica (computer) (1/6 in)millimeter (mm)4.233 333E+00
pica (printer's)meter (m)4.217 518E-03
pica (printer's)millimeter (mm)4.217 518E+00
point (computer) (1/72 in)meter (m)3.527 778E-04
point (computer) (1/72 in)millimeter (mm)3.527 778E-01
point (printer's)meter (m)3.514 598E-04
point (printer's)millimeter (mm)3.514 598E-01
rod (based on U.S. survey foot) (rd) 7meter (m)5.029 210E+00
yard (yd)meter (m)9.144E-01

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LIGHT
To convert fromtoMultiply by
candela per square inch (cd/in2)candela per square meter (cd/m2)1.550 003E+03
footcandlelux (lx)1.076 391E+01
footlambertcandela per square meter (cd/m2)3.426 259E+00
lambert 17candela per square meter (cd/m2)3.183 099E+03
lumen per square foot (lm/ft2)lux (lx)1.076 391E+01
phot (ph)lux (lx)1.0E+04
stilb (sb)candela per square meter (cd/m2)1.0E+04

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MASS and MOMENT OF INERTIA
To convert fromtoMultiply by
carat, metrickilogram (kg)2.0E-04
carat, metricgram (g)2.0E-01
grain (gr)kilogram (kg)6.479 891 E-05
grain (gr)milligram (mg)6.479 891E+01
hundredweight (long, 112 lb)kilogram (kg)5.080 235E+01
hundredweight (short, 100 lb)kilogram (kg)4.535 924E+01
kilogram-force second squared per meter (kgf · s2/m)kilogram (kg)9.806 65E+00
ounce (avoirdupois) (oz)kilogram (kg)2.834 952E-02
ounce (avoirdupois) (oz)gram (g)2.834 952E+01
ounce (troy or apothecary) (oz)kilogram (kg)3.110 348E-02
ounce (troy or apothecary) (oz)gram (g)3.110 348E+01
pennyweight (dwt)kilogram (kg)1.555 174E-03
pennyweight (dwt)gram (g)1.555 174E+00
pound (avoirdupois) (lb) 22kilogram (kg)4.535 924E-01
pound (troy or apothecary) (lb)kilogram (kg)3.732 417E-01
pound foot squared (lb · ft2)kilogram meter squared (kg · m2)4.214 011E-02
pound inch squared (lb · in2)kilogram meter squared (kg · m2)2.926 397E-04
slug (slug)kilogram (kg)1.459 390E+01
ton, assay (AT)kilogram (kg)2.916 667E-02
ton, assay (AT)gram (g)2.916 667E+01
ton, long (2240 lb)kilogram (kg)1.016 047E+03
ton, metric (t)kilogram (kg)1.0E+03
tonne (called "metric ton" in U.S.) (t)kilogram (kg)1.0E+03
ton, short (2000 lb)kilogram (kg)9.071 847E+02
 
MASS DENSITY (see MASS DIVIDED BY VOLUME)

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MASS DIVIDED BY AREA
To convert fromtoMultiply by
ounce (avoirdupois) per square foot (oz/ft2)kilogram per square meter (kg/m2)3.051 517E-01
ounce (avoirdupois) per square inch (oz/in2)kilogram per square meter (kg/m2)4.394 185E+01
ounce (avoirdupois) per square yard (oz/yd2)kilogram per square meter (kg/m2)3.390 575E-02
pound per square foot (lb/ft2)kilogram per square meter (kg/m2)4.882 428E+00
pound per square inch (not pound force) (lb/in2)kilogram per square meter (kg/m2)7.030 696E+02
 
MASS DIVIDED BY CAPACITY (see MASS DIVIDED BY VOLUME)

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MASS DIVIDED BY LENGTH
To convert fromtoMultiply by
denierkilogram per meter (kg/m)1.111 111E-07
deniergram per meter (g/m)1.111 111E-04
pound per foot (lb/ft)kilogram per meter (kg/m)1.488 164E+00
pound per inch (lb/in)  kilogram per meter (kg/m)1.785 797E+01
pound per yard(lb/yd)  kilogram per meter (kg/m)4.960 546E-01
texkilogram per meter (kg/m)1.0E-06

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MASS DIVIDED BY TIME (includes FLOW)
To convert fromtoMultiply by
pound per hour (lb/h)kilogram per second (kg/s)1.259 979E-04
pound per minute (lb/min)kilogram per second (kg/s)7.559 873E-03
pound per second (lb/s)kilogram per second (kg/s)4.535 924E-01
ton, short, per hourkilogram per second (kg/s)2.519 958E-01

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MASS DIVIDED BY VOLUME (includes MASS DENSITY and MASS CONCENTRATION)
To convert fromtoMultiply by
grain per gallon (U.S.) (gr/gal)kilogram per cubic meter (kg/m3)1.711 806E-02
grain per gallon (U.S.) (gr/gal)milligram per liter (mg/L)1.711 806E+01
gram per cubic centimeter (g/cm3)kilogram per cubic meter (kg/m3)1.0E+03
ounce (avoirdupois) per cubic inch (oz/in3)kilogram per cubic meter (kg/m3)1.729 994E+03
ounce (avoirdupois) per gallon [Canadian and U.K. (Imperial)] (oz/gal)kilogram per cubic meter (kg/m3)6.236 023E+00
ounce (avoirdupois) per gallon [Canadian and U.K. (Imperial)] (oz/gal)gram per liter (g/L)6.236 023E+00
ounce (avoirdupois) per gallon (U.S.) (oz/gal)kilogram per cubic meter (kg/m3)7.489 152E+00
ounce (avoirdupois) per gallon (U.S.) (oz/gal)gram per liter (g/L)7.489 152E+00
pound per cubic foot (lb/ft3)kilogram per cubic meter (kg/m3)1.601 846E+01
pound per cubic inch (lb/in3)kilogram per cubic meter (kg/m3)2.767 990E+04
pound per cubic yard (lb/yd3)kilogram per cubic meter (kg/m3)5.932 764E-01
pound per gallon [Canadian and U.K. (Imperial)] (lb/gal)kilogram per cubic meter (kg/m3)9.977 637E+01
pound per gallon [Canadian and U.K. (Imperial)] (lb/gal)kilogram per liter (kg/L)9.977 637E-02
pound per gallon (U.S.) (lb/gal)kilogram per cubic meter (kg/m3)1.198 264E+02
pound per gallon (U.S.) (lb/gal)kilogram per liter (kg/L)1.198 264E-01
slug per cubic foot (slug/ft3)kilogram per cubic meter (kg/m3)5.153 788E+02
ton, long, per cubic yardkilogram per cubic meter (kg/m3)1.328 939E+03
ton, short, per cubic yardkilogram per cubic meter (kg/m3)1.186 553E+03

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MOMENT OF FORCE or TORQUE
To convert fromtoMultiply by
dyne centimeter (dyn · cm)newton meter (N · m)1.0E-07
kilogram-force meter (kgf · m)newton meter (N · m)9.806 65E+00
ounce (avoirdupois)-force inch (ozf · in)newton meter (N · m)7.061 552E-03
ounce (avoirdupois)-force inch (ozf · in)millinewton meter (mN · m)7.061 552E+00
pound-force foot (lbf · ft)newton meter (N · m)1.355 818E+00
pound-force inch (lbf · in)newton meter (N · m)1.129 848E-01

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MOMENT OF FORCE or TORQUE, DIVIDED BY LENGTH
To convert fromtoMultiply by
pound-force foot per inch (lbf · ft/in)newton meter per meter (N · m/m)5.337 866E+01
pound-force inch per inch (lbf · in/in)newton meter per meter (N · m/m)4.448 222E+00

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PERMEABILITY
To convert fromtoMultiply by
darcy 14meter squared (m2)9.869 233E-13
perm (0 °C)kilogram per pascal second square meter [kg/(Pa · s · m2)]5.721 35E-11
perm (23 °C)kilogram per pascal second square meter [kg/(Pa · s · m2)]5.745 25E-11
perm inch (0 °C)kilogram per pascal second meter [kg/(Pa · s · m)]1.453 22E-12
perm inch (23 °C)kilogram per pascal second meter [kg/(Pa · s · m)]1.459 29E-12

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POWER
To convert fromtoMultiply by
erg per second (erg/s)watt (W)1.0E-07
foot pound-force per hour (ft · lbf/h)watt (W)3.766 161E-04
foot pound-force per minute (ft · lbf/min)watt (W)2.259 697E-02
foot pound-force per second (ft · lbf/s)watt (W)1.355 818E+00
horsepower (550 ft · lbf/s)watt (W)7.456 999E+02
horsepower (boiler)watt (W)9.809 50E+03
horsepower (electric)watt (W)7.46E+02
horsepower (metric)watt (W)7.354 988E+02
horsepower (U.K.)watt (W)7.4570E+02
horsepower (water)watt (W)7.460 43E+02

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PRESSURE or STRESS (FORCE DIVIDED BY AREA)
To convert fromtoMultiply by
atmosphere, standard (atm)pascal (Pa)1.013 25E+05
atmosphere, standard (atm)kilopascal (kPa)1.013 25E+02
atmosphere, technical (at) 8pascal (Pa)9.806 65E+04
atmosphere, technical (at) 8kilopascal (kPa)9.806 65E+01
bar (bar)pascal (Pa)1.0E+05
bar (bar)kilopascal (kPa)1.0E+02
centimeter of mercury (0 °C) 12pascal (Pa)1.333 22E+03
centimeter of mercury (0 °C) 12kilopascal (kPa)1.333 22E+00
centimeter of mercury, conventional (cmHg) 12pascal (Pa)1.333 224E+03
centimeter of mercury, conventional (cmHg) 12kilopascal (kPa)1.333 224E+00
centimeter of water (4 °C) 12pascal (Pa)9.806 38E+01
centimeter of water, conventional (cmH2O) 12pascal (Pa)9.806 65E+01
dyne per square centimeter (dyn/cm2)pascal (Pa)1.0E-01
foot of mercury, conventional (ftHg) 12pascal (Pa)4.063 666E+04
foot of mercury, conventional (ftHg) 12kilopascal (kPa)4.063 666E+01
foot of water (39.2 °F) 12pascal (Pa)2.988 98E+03
foot of water (39.2 °F) 12kilopascal (kPa)2.988 98E+00
foot of water, conventional (ftH2O) 12pascal (Pa)2.989 067E+03
foot of water, conventional (ftH2O) 12kilopascal (kPa)2.989 067E+00
gram-force per square centimeter (gf/cm2)pascal (Pa)9.806 65E+01
inch of mercury (32 °F) 12pascal (Pa)3.386 38E+03
inch of mercury (32 °F) 12kilopascal (kPa)3.386 38E+00
inch of mercury (60 °F) 12pascal (Pa)3.376 85E+03
inch of mercury (60 °F) 12kilopascal (kPa)3.376 85E+00
inch of mercury, conventional (inHg) 12pascal (Pa)3.386 389E+03
inch of mercury, conventional (inHg) 12kilopascal (kPa)3.386 389E+00
inch of water (39.2 °F) 12pascal (Pa)2.490 82E+02
inch of water (60 °F) 12pascal (Pa)2.4884E+02
inch of water, conventional (inH2O) 12pascal (Pa)2.490 889E+02
kilogram-force per square centimeter (kgf/cm2)pascal (Pa)9.806 65E+04
kilogram-force per square centimeter (kgf/cm2)kilopascal (kPa)9.806 65E+01
kilogram-force per square meter (kgf/m2)pascal (Pa)9.806 65E+00
kilogram-force per square millimeter (kgf/mm2)pascal (Pa)9.806 65E+06
kilogram-force per square millimeter (kgf/mm2)megapascal (MPa)9.806 65E+00
kip per square inch (ksi) (kip/in2)pascal (Pa)6.894 757E+06
kip per square inch (ksi) (kip/in2)kilopascal (kPa)6.894 757E+03
millibar (mbar)pascal (Pa)1.0E+02
millibar (mbar)kilopascal (kPa)1.0E-01
millimeter of mercury, conventional (mmHg) 12pascal (Pa)1.333 224E+02
millimeter of water, conventional (mmH2O) 12pascal (Pa)9.806 65E+00
poundal per square footpascal (Pa)1.488 164E+00
pound-force per square foot (lbf/ft2)pascal (Pa)4.788 026E+01
pound-force per square inch (psi) (lbf/in2)pascal (Pa)6.894 757E+03
pound-force per square inch (psi) (lbf/in2)kilopascal (kPa)6.894 757E+00
psi (pound-force per square inch) (lbf/in2)pascal (Pa)6.894 757E+03
psi (pound-force per square inch) (lbf/in2)kilopascal (kPa)6.894 757E+00
torr (Torr)pascal (Pa)1.333 224E+02

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RADIOLOGY
To convert fromtoMultiply by
curie (Ci)becquerel (Bq)3.7E+10
rad (absorbed dose) (rad)gray (Gy)1.0E-02
rem (rem)sievert (Sv)1.0E-02
roentgen (R)coulomb per kilogram (C/kg)2.58E-04
 
SPEED (see VELOCITY)
 
STRESS (see PRESSURE)

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TEMPERATURE
To convert fromtoMultiply by
degree Celsius (°C)kelvin (K)T/K = t/°C + 273.15
degree centigrade 15degree Celsius (°C)t/°C ≈ t/deg. cent.
degree Fahrenheit (°F)degree Celsius (°C)t/°C = (t/°F - 32)/1.8
degree Fahrenheit (°F)kelvin (K)T/K = (t/°F + 459.67)/1.8
degree Rankine (°R)kelvin (K)T/K = (T/°R)/1.8
kelvin (K)degree Celsius (°C)t/°C = T/K - 273.15

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TEMPERATURE INTERVAL
To convert fromtoMultiply by
degree Celsius (°C)kelvin (K)1.0E+00
degree centigrade 15degree Celsius (°C)1.0E+00
degree Fahrenheit (°F)degree Celsius (°C)5.555 556E-01
degree Fahrenheit (°F)kelvin (K)5.555 556E-01
degree Rankine (°R)kelvin (K)5.555 556E-01

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TIME
To convert fromtoMultiply by
day (d)second (s)8.64E+04
day (sidereal)second (s)8.616 409E+04
hour (h)second (s)3.6E+03
hour (sidereal)second (s)3.590 170E+03
minute (min)second (s)6.0E+01
minute (sidereal)second (s)5.983 617E+01
second (sidereal)second (s)9.972 696E-01
shakesecond (s)1.0E-08
shakenanosecond (ns)1.0E+01
year (365 days)second (s)3.1536E+07
year (sidereal)second (s)3.155 815E+07
year (tropical)second (s)3.155 693E+07
TORQUE (see MOMENT OF FORCE)

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VELOCITY (includes SPEED)
To convert fromtoMultiply by
foot per hour (ft/h)meter per second (m/s)8.466 667E-05
foot per minute (ft/min)meter per second (m/s)5.08E-03
foot per second (ft/s)meter per second (m/s)3.048E-01
inch per second (in/s)meter per second (m/s)2.54E-02
kilometer per hour (km/h)meter per second (m/s)2.777 778E-01
knot (nautical mile per hour)meter per second (m/s)5.144 444E-01
mile per hour (mi/h)meter per second (m/s)4.4704E-01
mile per hour (mi/h)kilometer per hour (km/h)1.609 344E+00
mile per minute (mi/min)meter per second (m/s)2.682 24E+01
mile per second (mi/s)meter per second (m/s)1.609 344E+03
revolution per minute (rpm) (r/min)radian per second (rad/s)1.047 198E-01
rpm (revolution per minute) (r/min)radian per second (rad/s)1.047 198E-01


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VISCOSITY, DYNAMIC
To convert fromtoMultiply by
centipoise (cP)pascal second (Pa · s)1.0E-03
poise (P)pascal second (Pa · s)1.0E-01
poundal second per square footpascal second (Pa · s)1.488 164E+00
pound-force second per square foot (lbf · s/ft2)pascal second (Pa · s)4.788 026E+01
pound-force second per square inch (lbf · s/in2)pascal second (Pa · s)6.894 757E+03
pound per foot hour [lb/(ft · h)]pascal second (Pa · s)4.133 789E-04
pound per foot second [lb/(ft · s)]pascal second (Pa · s)1.488 164E+00
rhereciprocal pascal second [(Pa · s)-1]1.0E+01
slug per foot second [slug/(ft · s)]pascal second (Pa · s)4.788 026E+01


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VISCOSITY, KINEMATIC
To convert fromtoMultiply by
centistokes (cSt)meter squared per second (m2/s)1.0E-06
square foot per second (ft2/s)meter squared per second (m2/s)9.290 304E-02
stokes (St)meter squared per second (m2/s)1.0E-04


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VOLUME (includes CAPACITY)
To convert fromtoMultiply by
acre-foot (based on U.S. survey foot) 7cubic meter (m3)1.233 489E+03
barrel [for petroleum, 42 gallons (U.S.)](bbl) cubic meter (m3)1.589 873E-01
barrel [for petroleum, 42 gallons (U.S.)](bbl) liter (L)1.589 873E+02
bushel (U.S.) (bu)cubic meter (m3)3.523 907E-02
bushel (U.S.) (bu)liter (L)3.523 907E+01
cord (128 ft3)cubic meter (m3)3.624 556E+00
cubic foot (ft3)cubic meter (m3)2.831 685E-02
cubic inch (in3) 13cubic meter (m3)1.638 706E-05
cubic mile (mi3)cubic meter (m3)4.168 182E+09
cubic yard (yd3)cubic meter (m3)7.645 549E-01
cup (U.S.)cubic meter (m3)2.365 882E-04
cup (U.S.)liter (L)2.365 882E-01
cup (U.S.)milliliter (mL)2.365 882E+02
fluid ounce (U.S.) (fl oz)cubic meter (m3)2.957 353E-05
fluid ounce (U.S.) (fl oz)milliliter (mL)2.957 353E+01
gallon [Canadian and U.K. (Imperial)] (gal)cubic meter (m3)4.546 09E-03
gallon [Canadian and U.K. (Imperial)] (gal)liter (L)4.546 09E+00
gallon (U.S.) (gal)cubic meter (m3)3.785 412E-03
gallon (U.S.) (gal)liter (L)3.785 412E+00
gill [Canadian and U.K. (Imperial)] (gi)cubic meter (m3)1.420 653E-04
gill [Canadian and U.K. (Imperial)] (gi)liter (L)1.420 653E-01
gill (U.S.) (gi)cubic meter (m3)1.182 941E-04
gill (U.S.) (gi)liter (L)1.182 941E-01
liter (L) 19cubic meter (m3)1.0E-03
ounce [Canadian and U.K. fluid (Imperial)] (fl oz)cubic meter (m3)2.841 306E-05
ounce [Canadian and U.K. fluid (Imperial)] (fl oz)milliliter (mL)2.841 306E+01
ounce (U.S. fluid) (fl oz)cubic meter (m3)2.957 353E-05
ounce (U.S. fluid) (fl oz)milliliter (mL)2.957 353E+01
peck (U.S.) (pk)cubic meter (m3)8.809 768E-03
peck (U.S.) (pk)liter (L)8.809 768E+00
pint (U.S. dry) (dry pt)cubic meter (m3)5.506 105E-04
pint (U.S. dry) (dry pt)liter (L)5.506 105E-01
pint (U.S. liquid) (liq pt)cubic meter (m3)4.731 765E-04
pint (U.S. liquid) (liq pt)liter (L)4.731 765E-01
quart (U.S. dry) (dry qt)cubic meter (m3)1.101 221E-03
quart (U.S. dry) (dry qt)liter (L)1.101 221E+00
quart (U.S. liquid) (liq qt)cubic meter (m3)9.463 529E-04
quart (U.S. liquid) (liq qt)liter (L)9.463 529E-01
stere (st)cubic meter (m3)1.0E+00
tablespooncubic meter (m3)1.478 676E-05
tablespoonmilliliter (mL)1.478 676E+01
teaspooncubic meter (m3)4.928 922E-06
teaspoonmilliliter (mL)4.928 922E+00
ton, registercubic meter (m3)2.831 685E+00

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VOLUME DIVIDED BY TIME (includes FLOW)
To convert fromtoMultiply by
cubic foot per minute (ft3/min)cubic meter per second (m3/s)4.719 474E-04
cubic foot per minute (ft3/min)liter per second (L/s)4.719 474E-01
cubic foot per second (ft3/s)cubic meter per second (m3/s)2.831 685E-02
cubic inch per minute (in3/min)cubic meter per second (m3/s)2.731 177E-07
cubic yard per minute (yd3/min)cubic meter per second (m3/s)1.274 258E-02
gallon (U.S.) per day (gal/d)cubic meter per second (m3/s)4.381 264E-08
gallon (U.S.) per day (gal/d)liter per second (L/s)4.381 264E-05
gallon (U.S.) per minute (gpm) (gal/min)cubic meter per second (m3/s)6.309 020E-05
gallon (U.S.) per minute (gpm) (gal/min)liter per second (L/s)6.309 020E-02

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WORK (see ENERGY)

 

Created February 1, 2016, Updated September 7, 2016