#From https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b9
ACCELERATION
To convert from	to	Multiply 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)	3.048	E-01
gal (Gal)	meter per second squared (m/s2)	1.0	E-02
inch per second squared (in/s2)	meter per second squared (m/s2)	2.54	E-02
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ANGLE
To convert from	to	Multiply by
degree (°)	radian (rad)	1.745 329	E-02
gon (also called grade) (gon)	radian (rad)	1.570 796	E-02
gon (also called grade) (gon)	degree (°)	9.0	E-01
mil	radian (rad)	9.817 477	E-04
mil	degree (°)	5.625	E-02
minute (′ )	radian (rad)	2.908 882	E-04
revolution (r)	radian (rad)	6.283 185	E+00
second (″ )	radian (rad)	4.848 137	E-06
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AREA AND SECOND MOMENT OF AREA
To convert from	to	Multiply by
acre (based on U.S. survey foot)	square meter (m2)	4.046 873	E+03
are (a)	square meter (m2)	1.0	E+02
barn (b)	square meter (m2)	1.0	E-28
circular mil	square meter (m2)	5.067 075	E-10
circular mil	square millimeter (mm2)	5.067 075	E-04
foot to the fourth power (ft4) 16	meter to the fourth power (m4)	8.630 975	E-03
hectare (ha)	square meter (m2)	1.0	E+04
inch to the fourth power (in4) 16	meter to the fourth power (m4)	4.162 314	E-07
square foot (ft2)	square meter (m2)	9.290 304	E-02
square inch (in2)	square meter (m2)	6.4516	E-04
square inch (in2)	square centimeter (cm2)	6.4516	E+00
square mile (mi2)	square meter (m2)	2.589 988	E+06
square mile (mi2)	square kilometer (km2)	2.589 988	E+00
square mile (based on U.S. survey foot) (mi2) 7	square meter (m2)	2.589 998	E+06
square mile (based on U.S. survey foot) (mi2) 7	square kilometer (km2)	2.589 998	E+00
square yard (yd2)	square meter (m2)	8.361 274	E-01
CAPACITY (see VOLUME)
DENSITY (that is, MASS DENSITY - see MASS DIVIDED BY VOLUME)

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ELECTRICITY and MAGNETISM
To convert from	to	Multiply by
abampere	ampere (A)	1.0	E+01
abcoulomb	coulomb(C)	1.0	E+01
abfarad	farad (F)	1.0	E+09
abhenry	henry (H)	1.0	E-09
abmho	siemens (S)	1.0	E+09
abohm	ohm (Ω)	1.0	E-09
abvolt	volt	1.0	E-08
ampere hour (A · h)	coulomb(C)	3.6	E+03
biot (Bi)	ampere (A)	1.0	E+01
EMU of capacitance (abfarad)	farad (F)	1.0	E+09
EMU of current (abampere)	ampere (A)	1.0	E+01
EMU of electric potential (abvolt)	volt (V)	1.0	E-08
EMU of inductance (abhenry)	henry (H)	1.0	E-09
EMU of resistance (abohm)	ohm (Ω)	1.0	E-09
ESU of capacitance (statfarad)	farad (F)	1.112 650	E-12
ESU of current (statampere)	ampere (A)	3.335 641	E-10
ESU of electric potential (statvolt)	volt (V)	2.997 925	E+02
ESU of inductance (stathenry)	henry (H)	8.987 552	E+11
ESU of resistance (statohm)	ohm (Ω)	8.987 552	E+11
faraday (based on carbon 12)	coulomb(C)	9.648 531	E+04
franklin (Fr)	coulomb(C)	3.335 641	E-10
gamma (γ)	tesla (T)	1.0	E-09
gauss (Gs, G)	tesla (T)	1.0	E-04
gilbert (Gi)	ampere (A)	7.957 747	E-01
maxwell (Mx)	weber (Wb)	1.0	E-08
mho	siemens (S)	1.0	E+00
oersted (Oe)	ampere per meter (A/m)	7.957 747	E+01
ohm centimeter (Ω · cm)	ohm meter (Ω · m)	1.0	E-02
ohm circular-mil per foot	ohm meter (Ω · m)	1.662 426	E-09
ohm circular-mil per foot	ohm square millimeter per meter (Ω · mm2/m)	1.662 426	E-03
statampere	ampere (A)	3.335 641	E-10
statcoulomb	coulomb (C)	3.335 641	E-10
statfarad	farad (F)	1.112 650	E-12
stathenry	henry (H)	8.987 552	E+11
statmho	siemens (S)	1.112 650	E-12
statohm	ohm(Ω)	8.987 552	E+11
statvolt	volt (V)	2.997 925	E+02
unit pole	weber (Wb)	1.256 637	E-07
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ENERGY (includes WORK)
To convert from	to	Multiply by
British thermal unitIT (BtuIT) 9	joule (J)	1.055 056	E+03
British thermal unitth (Btuth) 9	joule (J)	1.054 350	E+03
British thermal unit (mean) (Btu)	joule (J)	1.055 87	E+03
British thermal unit (39 °F) (Btu)	joule (J)	1.059 67	E+03
British thermal unit (59 °F) (Btu)	joule (J)	1.054 80	E+03
British thermal unit (60 °F) (Btu)	joule (J)	1.054 68	E+03
calorieIT (calIT) 10	joule (J)	4.1868	E+00
calorieth (calth) 10	joule (J)	4.184	E+00
calorie (mean) (cal)	joule (J)	4.190 02	E+00
calorie (15 °C) (cal15)	joule (J)	4.185 80	E+00
calorie (20 °C) (cal20)	joule (J)	4.181 90	E+00
calorieIT, kilogram (nutrition) 11	joule (J)	4.1868	E+03
calorieth, kilogram (nutrition) 11	joule (J)	4.184	E+03
calorie (mean), kilogram (nutrition) 11	joule (J)	4.190 02	E+03
electronvolt (eV)	joule (J)	1.602 177	E-19
erg (erg)	joule (J)	1.0	E-07
foot poundal	joule (J)	4.214 011	E-02
foot pound-force (ft · lbf)	joule (J)	1.355 818	E+00
kilocalorieIT (kcalIT)	joule (J)	4.1868	E+03
kilocalorieth (kcalth)	joule (J)	4.184	E+03
kilocalorie (mean) (kcal)	joule (J)	4.190 02	E+03
kilowatt hour (kW · h)	joule (J)	3.6	E+06
kilowatt hour (kW · h)	megajoule (MJ)	3.6	E+00
quad (1015 BtuIT) 9	joule (J)	1.055 056	E+18
therm (EC) 24	joule (J)	1.055 06	E+08
therm (U.S.) 24	joule (J)	1.054 804	E+08
ton of TNT (energy equivalent) 25	joule (J)	4.184	E+09
watt hour (W · h)	joule (J)	3.6	E+03
watt second (W · s)	joule (J)	1.0	E+00
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ENERGY DIVIDED BY AREA TIME
To convert from	to	Multiply by
erg per square centimeter second [erg/(cm2 · s)]	watt per square meter (W/m2)	1.0	E-03
watt per square centimeter (W/cm2)	watt per square meter (W/m2)	1.0	E+04
watt per square inch (W/in2)	watt per square meter (W/m2)	1.550 003	E+03
FLOW (see MASS DIVIDED BY TIME or VOLUME DIVIDED BY TIME)
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FORCE
To convert from	to	Multiply by
dyne (dyn)	newton (N)	1.0	E-05
kilogram-force (kgf)	newton (N)	9.806 65	E+00
kilopond (kilogram-force) (kp)	newton (N)	9.806 65	E+00
kip (1 kip = 1000 lbf)	newton (N)	4.448 222	E+03
kip (1 kip = 1000 lbf)	kilonewton (kN)	4.448 222	E+00
ounce (avoirdupois)-force (ozf)	newton (N)	2.780 139	E-01
poundal	newton (N)	1.382 550	E-01
pound-force (lbf) 23	newton (N)	4.448 222	E+00
pound-force per pound (lbf/lb) (thrust to mass ratio)	newton per kilogram (N/kg)	9.806 65	E+00
ton-force (2000 lbf)	newton (N)	8.896 443	E+03
ton-force (2000 lbf)	kilonewton (kN)	8.896 443	E+00
FORCE DIVIDED BY AREA (see PRESSURE)
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FORCE DIVIDED BY LENGTH
To convert from	to	Multiply by
pound-force per foot (lbf/ft)	newton per meter (N/m)	1.459 390	E+01
pound-force per inch (lbf/in)	newton per meter (N/m)	1.751 268	E+02
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HEAT - Available Energy
To convert from	to	Multiply by
British thermal unitIT per cubic foot (BtuIT/ft3)	joule per cubic meter (J/m3)	3.725 895	E+04
British thermal unitth per cubic foot (Btuth/ft3)	joule per cubic meter (J/m3)	3.723 403	E+04
British thermal unitIT per pound (BtuIT/lb)	joule per kilogram (J/kg)	2.326	E+03
British thermal unitth per pound (Btuth/lb)	joule per kilogram (J/kg)	2.324 444	E+03
calorieIT per gram (calIT/g)	joule per kilogram (J/kg)	4.1868	E+03
calorieth per gram (calth/g)	joule per kilogram (J/kg)	4.184	E+03
 

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

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

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

Fuel Consumption
To convert from	to	Multiply by
gallon (U.S.) per horsepower hour [gal/(hp · h)]	cubic meter per joule (m3/J)	1.410 089	E-09
gallon (U.S.) per horsepower hour [gal/(hp · h)]	liter per joule (L/J)	1.410 089	E-06
mile per gallon (U.S.) (mpg) (mi/gal)	meter per cubic meter (m/m3)	4.251 437	E+05
mile per gallon (U.S.) (mpg) (mi/gal)	kilometer per liter (km/L)	4.251 437	E-01
mile per gallon (U.S.) (mpg) (mi/gal) 21	liter 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)	1.689 659	E-07
 

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

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

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

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

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

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

Thermal Resistivity
To convert from	to	Multiply by
degree Fahrenheit hour square foot per British thermal unitIT inch [°F · h · ft2/(BtuIT · in)]	meter kelvin per watt (m · K/W)	6.933 472	E+00
degree Fahrenheit hour square foot per British thermal unitth inch [°F · h · ft2/(Btuth · in)]	meter kelvin per watt (m · K/W)	6.938 112	E+04
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LENGTH
To convert from	to	Multiply by
ångström(Å)	meter (m)	1.0	E-10
ångström(Å)	nanometer (nm)	1.0	E-01
astronomical unit (ua)	meter (m)	1.495 979	E+11
chain (based on U.S. survey foot) (ch) 7	meter (m)	2.011 684	E+01
fathom (based on U.S. survey foot) 7	meter (m)	1.828 804	E+00
fermi	meter (m)	1.0	E-15
fermi	femtometer (fm)	1.0	E+00
foot (ft)	meter (m)	3.048	E-01
foot (U.S. survey) (ft) 7	meter (m)	3.048 006	E-01
inch (in)	meter (m)	2.54	E-02
inch (in)	centimeter (cm)	2.54	E+00
kayser(K)	reciprocal meter (m-1)	1	E+02
light year (l. y.) 18	meter (m)	9.460 73	E+15
microinch	meter (m)	2.54	E-08
microinch	micrometer (μm)	2.54	E-02
micron (μ)	meter (m)	1.0	E-06
micron (μ)	micrometer (μm)	1.0	E+00
mil (0.001 in)	meter (m)	2.54	E-05
mil (0.001 in)	millimeter (mm)	2.54	E-02
mile (mi)	meter (m)	1.609 344	E+03
mile (mi)	kilometer (km)	1.609 344	E+00
mile (based on U.S. survey foot) (mi) 7	meter (m)	1.609 347	E+03
mile (based on U.S. survey foot) (mi) 7	kilometer (km)	1.609 347	E+00
mile, nautical 20	meter (m)	1.852	E+03
parsec (pc)	meter (m)	3.085 678	E+16
pica (computer) (1/6 in)	meter (m)	4.233 333	E-03
pica (computer) (1/6 in)	millimeter (mm)	4.233 333	E+00
pica (printer's)	meter (m)	4.217 518	E-03
pica (printer's)	millimeter (mm)	4.217 518	E+00
point (computer) (1/72 in)	meter (m)	3.527 778	E-04
point (computer) (1/72 in)	millimeter (mm)	3.527 778	E-01
point (printer's)	meter (m)	3.514 598	E-04
point (printer's)	millimeter (mm)	3.514 598	E-01
rod (based on U.S. survey foot) (rd) 7	meter (m)	5.029 210	E+00
yard (yd)	meter (m)	9.144	E-01
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LIGHT
To convert from	to	Multiply by
candela per square inch (cd/in2)	candela per square meter (cd/m2)	1.550 003	E+03
footcandle	lux (lx)	1.076 391	E+01
footlambert	candela per square meter (cd/m2)	3.426 259	E+00
lambert 17	candela per square meter (cd/m2)	3.183 099	E+03
lumen per square foot (lm/ft2)	lux (lx)	1.076 391	E+01
phot (ph)	lux (lx)	1.0	E+04
stilb (sb)	candela per square meter (cd/m2)	1.0	E+04
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MASS and MOMENT OF INERTIA
To convert from	to	Multiply by
carat, metric	kilogram (kg)	2.0	E-04
carat, metric	gram (g)	2.0	E-01
grain (gr)	kilogram (kg)	6.479 891	E-05
grain (gr)	milligram (mg)	6.479 891	E+01
hundredweight (long, 112 lb)	kilogram (kg)	5.080 235	E+01
hundredweight (short, 100 lb)	kilogram (kg)	4.535 924	E+01
kilogram-force second squared per meter (kgf · s2/m)	kilogram (kg)	9.806 65	E+00
ounce (avoirdupois) (oz)	kilogram (kg)	2.834 952	E-02
ounce (avoirdupois) (oz)	gram (g)	2.834 952	E+01
ounce (troy or apothecary) (oz)	kilogram (kg)	3.110 348	E-02
ounce (troy or apothecary) (oz)	gram (g)	3.110 348	E+01
pennyweight (dwt)	kilogram (kg)	1.555 174	E-03
pennyweight (dwt)	gram (g)	1.555 174	E+00
pound (avoirdupois) (lb) 22	kilogram (kg)	4.535 924	E-01
pound (troy or apothecary) (lb)	kilogram (kg)	3.732 417	E-01
pound foot squared (lb · ft2)	kilogram meter squared (kg · m2)	4.214 011	E-02
pound inch squared (lb · in2)	kilogram meter squared (kg · m2)	2.926 397	E-04
slug (slug)	kilogram (kg)	1.459 390	E+01
ton, assay (AT)	kilogram (kg)	2.916 667	E-02
ton, assay (AT)	gram (g)	2.916 667	E+01
ton, long (2240 lb)	kilogram (kg)	1.016 047	E+03
ton, metric (t)	kilogram (kg)	1.0	E+03
tonne (called "metric ton" in U.S.) (t)	kilogram (kg)	1.0	E+03
ton, short (2000 lb)	kilogram (kg)	9.071 847	E+02
 
MASS DENSITY (see MASS DIVIDED BY VOLUME)
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MASS DIVIDED BY AREA
To convert from	to	Multiply by
ounce (avoirdupois) per square foot (oz/ft2)	kilogram per square meter (kg/m2)	3.051 517	E-01
ounce (avoirdupois) per square inch (oz/in2)	kilogram per square meter (kg/m2)	4.394 185	E+01
ounce (avoirdupois) per square yard (oz/yd2)	kilogram per square meter (kg/m2)	3.390 575	E-02
pound per square foot (lb/ft2)	kilogram per square meter (kg/m2)	4.882 428	E+00
pound per square inch (not pound force) (lb/in2)	kilogram per square meter (kg/m2)	7.030 696	E+02
 
MASS DIVIDED BY CAPACITY (see MASS DIVIDED BY VOLUME)
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MASS DIVIDED BY LENGTH
To convert from	to	Multiply by
denier	kilogram per meter (kg/m)	1.111 111	E-07
denier	gram per meter (g/m)	1.111 111	E-04
pound per foot (lb/ft)	kilogram per meter (kg/m)	1.488 164	E+00
pound per inch (lb/in)  	kilogram per meter (kg/m)	1.785 797	E+01
pound per yard(lb/yd)  	kilogram per meter (kg/m)	4.960 546	E-01
tex	kilogram per meter (kg/m)	1.0	E-06
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MASS DIVIDED BY TIME (includes FLOW)
To convert from	to	Multiply by
pound per hour (lb/h)	kilogram per second (kg/s)	1.259 979	E-04
pound per minute (lb/min)	kilogram per second (kg/s)	7.559 873	E-03
pound per second (lb/s)	kilogram per second (kg/s)	4.535 924	E-01
ton, short, per hour	kilogram per second (kg/s)	2.519 958	E-01
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MASS DIVIDED BY VOLUME (includes MASS DENSITY and MASS CONCENTRATION)
To convert from	to	Multiply by
grain per gallon (U.S.) (gr/gal)	kilogram per cubic meter (kg/m3)	1.711 806	E-02
grain per gallon (U.S.) (gr/gal)	milligram per liter (mg/L)	1.711 806	E+01
gram per cubic centimeter (g/cm3)	kilogram per cubic meter (kg/m3)	1.0	E+03
ounce (avoirdupois) per cubic inch (oz/in3)	kilogram per cubic meter (kg/m3)	1.729 994	E+03
ounce (avoirdupois) per gallon [Canadian and U.K. (Imperial)] (oz/gal)	kilogram per cubic meter (kg/m3)	6.236 023	E+00
ounce (avoirdupois) per gallon [Canadian and U.K. (Imperial)] (oz/gal)	gram per liter (g/L)	6.236 023	E+00
ounce (avoirdupois) per gallon (U.S.) (oz/gal)	kilogram per cubic meter (kg/m3)	7.489 152	E+00
ounce (avoirdupois) per gallon (U.S.) (oz/gal)	gram per liter (g/L)	7.489 152	E+00
pound per cubic foot (lb/ft3)	kilogram per cubic meter (kg/m3)	1.601 846	E+01
pound per cubic inch (lb/in3)	kilogram per cubic meter (kg/m3)	2.767 990	E+04
pound per cubic yard (lb/yd3)	kilogram per cubic meter (kg/m3)	5.932 764	E-01
pound per gallon [Canadian and U.K. (Imperial)] (lb/gal)	kilogram per cubic meter (kg/m3)	9.977 637	E+01
pound per gallon [Canadian and U.K. (Imperial)] (lb/gal)	kilogram per liter (kg/L)	9.977 637	E-02
pound per gallon (U.S.) (lb/gal)	kilogram per cubic meter (kg/m3)	1.198 264	E+02
pound per gallon (U.S.) (lb/gal)	kilogram per liter (kg/L)	1.198 264	E-01
slug per cubic foot (slug/ft3)	kilogram per cubic meter (kg/m3)	5.153 788	E+02
ton, long, per cubic yard	kilogram per cubic meter (kg/m3)	1.328 939	E+03
ton, short, per cubic yard	kilogram per cubic meter (kg/m3)	1.186 553	E+03
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MOMENT OF FORCE or TORQUE
To convert from	to	Multiply by
dyne centimeter (dyn · cm)	newton meter (N · m)	1.0	E-07
kilogram-force meter (kgf · m)	newton meter (N · m)	9.806 65	E+00
ounce (avoirdupois)-force inch (ozf · in)	newton meter (N · m)	7.061 552	E-03
ounce (avoirdupois)-force inch (ozf · in)	millinewton meter (mN · m)	7.061 552	E+00
pound-force foot (lbf · ft)	newton meter (N · m)	1.355 818	E+00
pound-force inch (lbf · in)	newton meter (N · m)	1.129 848	E-01
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MOMENT OF FORCE or TORQUE, DIVIDED BY LENGTH
To convert from	to	Multiply by
pound-force foot per inch (lbf · ft/in)	newton meter per meter (N · m/m)	5.337 866	E+01
pound-force inch per inch (lbf · in/in)	newton meter per meter (N · m/m)	4.448 222	E+00
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PERMEABILITY
To convert from	to	Multiply by
darcy 14	meter squared (m2)	9.869 233	E-13
perm (0 °C)	kilogram per pascal second square meter [kg/(Pa · s · m2)]	5.721 35	E-11
perm (23 °C)	kilogram per pascal second square meter [kg/(Pa · s · m2)]	5.745 25	E-11
perm inch (0 °C)	kilogram per pascal second meter [kg/(Pa · s · m)]	1.453 22	E-12
perm inch (23 °C)	kilogram per pascal second meter [kg/(Pa · s · m)]	1.459 29	E-12
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POWER
To convert from	to	Multiply by
erg per second (erg/s)	watt (W)	1.0	E-07
foot pound-force per hour (ft · lbf/h)	watt (W)	3.766 161	E-04
foot pound-force per minute (ft · lbf/min)	watt (W)	2.259 697	E-02
foot pound-force per second (ft · lbf/s)	watt (W)	1.355 818	E+00
horsepower (550 ft · lbf/s)	watt (W)	7.456 999	E+02
horsepower (boiler)	watt (W)	9.809 50	E+03
horsepower (electric)	watt (W)	7.46	E+02
horsepower (metric)	watt (W)	7.354 988	E+02
horsepower (U.K.)	watt (W)	7.4570	E+02
horsepower (water)	watt (W)	7.460 43	E+02
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PRESSURE or STRESS (FORCE DIVIDED BY AREA)
To convert from	to	Multiply by
atmosphere, standard (atm)	pascal (Pa)	1.013 25	E+05
atmosphere, standard (atm)	kilopascal (kPa)	1.013 25	E+02
atmosphere, technical (at) 8	pascal (Pa)	9.806 65	E+04
atmosphere, technical (at) 8	kilopascal (kPa)	9.806 65	E+01
bar (bar)	pascal (Pa)	1.0	E+05
bar (bar)	kilopascal (kPa)	1.0	E+02
centimeter of mercury (0 °C) 12	pascal (Pa)	1.333 22	E+03
centimeter of mercury (0 °C) 12	kilopascal (kPa)	1.333 22	E+00
centimeter of mercury, conventional (cmHg) 12	pascal (Pa)	1.333 224	E+03
centimeter of mercury, conventional (cmHg) 12	kilopascal (kPa)	1.333 224	E+00
centimeter of water (4 °C) 12	pascal (Pa)	9.806 38	E+01
centimeter of water, conventional (cmH2O) 12	pascal (Pa)	9.806 65	E+01
dyne per square centimeter (dyn/cm2)	pascal (Pa)	1.0	E-01
foot of mercury, conventional (ftHg) 12	pascal (Pa)	4.063 666	E+04
foot of mercury, conventional (ftHg) 12	kilopascal (kPa)	4.063 666	E+01
foot of water (39.2 °F) 12	pascal (Pa)	2.988 98	E+03
foot of water (39.2 °F) 12	kilopascal (kPa)	2.988 98	E+00
foot of water, conventional (ftH2O) 12	pascal (Pa)	2.989 067	E+03
foot of water, conventional (ftH2O) 12	kilopascal (kPa)	2.989 067	E+00
gram-force per square centimeter (gf/cm2)	pascal (Pa)	9.806 65	E+01
inch of mercury (32 °F) 12	pascal (Pa)	3.386 38	E+03
inch of mercury (32 °F) 12	kilopascal (kPa)	3.386 38	E+00
inch of mercury (60 °F) 12	pascal (Pa)	3.376 85	E+03
inch of mercury (60 °F) 12	kilopascal (kPa)	3.376 85	E+00
inch of mercury, conventional (inHg) 12	pascal (Pa)	3.386 389	E+03
inch of mercury, conventional (inHg) 12	kilopascal (kPa)	3.386 389	E+00
inch of water (39.2 °F) 12	pascal (Pa)	2.490 82	E+02
inch of water (60 °F) 12	pascal (Pa)	2.4884	E+02
inch of water, conventional (inH2O) 12	pascal (Pa)	2.490 889	E+02
kilogram-force per square centimeter (kgf/cm2)	pascal (Pa)	9.806 65	E+04
kilogram-force per square centimeter (kgf/cm2)	kilopascal (kPa)	9.806 65	E+01
kilogram-force per square meter (kgf/m2)	pascal (Pa)	9.806 65	E+00
kilogram-force per square millimeter (kgf/mm2)	pascal (Pa)	9.806 65	E+06
kilogram-force per square millimeter (kgf/mm2)	megapascal (MPa)	9.806 65	E+00
kip per square inch (ksi) (kip/in2)	pascal (Pa)	6.894 757	E+06
kip per square inch (ksi) (kip/in2)	kilopascal (kPa)	6.894 757	E+03
millibar (mbar)	pascal (Pa)	1.0	E+02
millibar (mbar)	kilopascal (kPa)	1.0	E-01
millimeter of mercury, conventional (mmHg) 12	pascal (Pa)	1.333 224	E+02
millimeter of water, conventional (mmH2O) 12	pascal (Pa)	9.806 65	E+00
poundal per square foot	pascal (Pa)	1.488 164	E+00
pound-force per square foot (lbf/ft2)	pascal (Pa)	4.788 026	E+01
pound-force per square inch (psi) (lbf/in2)	pascal (Pa)	6.894 757	E+03
pound-force per square inch (psi) (lbf/in2)	kilopascal (kPa)	6.894 757	E+00
psi (pound-force per square inch) (lbf/in2)	pascal (Pa)	6.894 757	E+03
psi (pound-force per square inch) (lbf/in2)	kilopascal (kPa)	6.894 757	E+00
torr (Torr)	pascal (Pa)	1.333 224	E+02
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RADIOLOGY
To convert from	to	Multiply by
curie (Ci)	becquerel (Bq)	3.7	E+10
rad (absorbed dose) (rad)	gray (Gy)	1.0	E-02
rem (rem)	sievert (Sv)	1.0	E-02
roentgen (R)	coulomb per kilogram (C/kg)	2.58	E-04
 
SPEED (see VELOCITY)
 
STRESS (see PRESSURE)
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TEMPERATURE
To convert from	to	Multiply by
degree Celsius (°C)	kelvin (K)	T/K = t/°C + 273.15
degree centigrade 15	degree 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 from	to	Multiply by
degree Celsius (°C)	kelvin (K)	1.0	E+00
degree centigrade 15	degree Celsius (°C)	1.0	E+00
degree Fahrenheit (°F)	degree Celsius (°C)	5.555 556	E-01
degree Fahrenheit (°F)	kelvin (K)	5.555 556	E-01
degree Rankine (°R)	kelvin (K)	5.555 556	E-01
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TIME
To convert from	to	Multiply by
day (d)	second (s)	8.64	E+04
day (sidereal)	second (s)	8.616 409	E+04
hour (h)	second (s)	3.6	E+03
hour (sidereal)	second (s)	3.590 170	E+03
minute (min)	second (s)	6.0	E+01
minute (sidereal)	second (s)	5.983 617	E+01
second (sidereal)	second (s)	9.972 696	E-01
shake	second (s)	1.0	E-08
shake	nanosecond (ns)	1.0	E+01
year (365 days)	second (s)	3.1536	E+07
year (sidereal)	second (s)	3.155 815	E+07
year (tropical)	second (s)	3.155 693	E+07
TORQUE (see MOMENT OF FORCE)
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VELOCITY (includes SPEED)
To convert from	to	Multiply by
foot per hour (ft/h)	meter per second (m/s)	8.466 667	E-05
foot per minute (ft/min)	meter per second (m/s)	5.08	E-03
foot per second (ft/s)	meter per second (m/s)	3.048	E-01
inch per second (in/s)	meter per second (m/s)	2.54	E-02
kilometer per hour (km/h)	meter per second (m/s)	2.777 778	E-01
knot (nautical mile per hour)	meter per second (m/s)	5.144 444	E-01
mile per hour (mi/h)	meter per second (m/s)	4.4704	E-01
mile per hour (mi/h)	kilometer per hour (km/h)	1.609 344	E+00
mile per minute (mi/min)	meter per second (m/s)	2.682 24	E+01
mile per second (mi/s)	meter per second (m/s)	1.609 344	E+03
revolution per minute (rpm) (r/min)	radian per second (rad/s)	1.047 198	E-01
rpm (revolution per minute) (r/min)	radian per second (rad/s)	1.047 198	E-01

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

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

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VOLUME (includes CAPACITY)
To convert from	to	Multiply by
acre-foot (based on U.S. survey foot) 7	cubic meter (m3)	1.233 489	E+03
barrel [for petroleum, 42 gallons (U.S.)](bbl)	cubic meter (m3)	1.589 873	E-01
barrel [for petroleum, 42 gallons (U.S.)](bbl)	liter (L)	1.589 873	E+02
bushel (U.S.) (bu)	cubic meter (m3)	3.523 907	E-02
bushel (U.S.) (bu)	liter (L)	3.523 907	E+01
cord (128 ft3)	cubic meter (m3)	3.624 556	E+00
cubic foot (ft3)	cubic meter (m3)	2.831 685	E-02
cubic inch (in3) 13	cubic meter (m3)	1.638 706	E-05
cubic mile (mi3)	cubic meter (m3)	4.168 182	E+09
cubic yard (yd3)	cubic meter (m3)	7.645 549	E-01
cup (U.S.)	cubic meter (m3)	2.365 882	E-04
cup (U.S.)	liter (L)	2.365 882	E-01
cup (U.S.)	milliliter (mL)	2.365 882	E+02
fluid ounce (U.S.) (fl oz)	cubic meter (m3)	2.957 353	E-05
fluid ounce (U.S.) (fl oz)	milliliter (mL)	2.957 353	E+01
gallon [Canadian and U.K. (Imperial)] (gal)	cubic meter (m3)	4.546 09	E-03
gallon [Canadian and U.K. (Imperial)] (gal)	liter (L)	4.546 09	E+00
gallon (U.S.) (gal)	cubic meter (m3)	3.785 412	E-03
gallon (U.S.) (gal)	liter (L)	3.785 412	E+00
gill [Canadian and U.K. (Imperial)] (gi)	cubic meter (m3)	1.420 653	E-04
gill [Canadian and U.K. (Imperial)] (gi)	liter (L)	1.420 653	E-01
gill (U.S.) (gi)	cubic meter (m3)	1.182 941	E-04
gill (U.S.) (gi)	liter (L)	1.182 941	E-01
liter (L) 19	cubic meter (m3)	1.0	E-03
ounce [Canadian and U.K. fluid (Imperial)] (fl oz)	cubic meter (m3)	2.841 306	E-05
ounce [Canadian and U.K. fluid (Imperial)] (fl oz)	milliliter (mL)	2.841 306	E+01
ounce (U.S. fluid) (fl oz)	cubic meter (m3)	2.957 353	E-05
ounce (U.S. fluid) (fl oz)	milliliter (mL)	2.957 353	E+01
peck (U.S.) (pk)	cubic meter (m3)	8.809 768	E-03
peck (U.S.) (pk)	liter (L)	8.809 768	E+00
pint (U.S. dry) (dry pt)	cubic meter (m3)	5.506 105	E-04
pint (U.S. dry) (dry pt)	liter (L)	5.506 105	E-01
pint (U.S. liquid) (liq pt)	cubic meter (m3)	4.731 765	E-04
pint (U.S. liquid) (liq pt)	liter (L)	4.731 765	E-01
quart (U.S. dry) (dry qt)	cubic meter (m3)	1.101 221	E-03
quart (U.S. dry) (dry qt)	liter (L)	1.101 221	E+00
quart (U.S. liquid) (liq qt)	cubic meter (m3)	9.463 529	E-04
quart (U.S. liquid) (liq qt)	liter (L)	9.463 529	E-01
stere (st)	cubic meter (m3)	1.0	E+00
tablespoon	cubic meter (m3)	1.478 676	E-05
tablespoon	milliliter (mL)	1.478 676	E+01
teaspoon	cubic meter (m3)	4.928 922	E-06
teaspoon	milliliter (mL)	4.928 922	E+00
ton, register	cubic meter (m3)	2.831 685	E+00
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VOLUME DIVIDED BY TIME (includes FLOW)
To convert from	to	Multiply by
cubic foot per minute (ft3/min)	cubic meter per second (m3/s)	4.719 474	E-04
cubic foot per minute (ft3/min)	liter per second (L/s)	4.719 474	E-01
cubic foot per second (ft3/s)	cubic meter per second (m3/s)	2.831 685	E-02
cubic inch per minute (in3/min)	cubic meter per second (m3/s)	2.731 177	E-07
cubic yard per minute (yd3/min)	cubic meter per second (m3/s)	1.274 258	E-02
gallon (U.S.) per day (gal/d)	cubic meter per second (m3/s)	4.381 264	E-08
gallon (U.S.) per day (gal/d)	liter per second (L/s)	4.381 264	E-05
gallon (U.S.) per minute (gpm) (gal/min)	cubic meter per second (m3/s)	6.309 020	E-05
gallon (U.S.) per minute (gpm) (gal/min)	liter per second (L/s)	6.309 020	E-02
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WORK (see ENERGY)
 