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NIST Guide to the SI, Appendix B.8: Factors for Units Listed Alphabetically

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.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Factors in boldface are exact

A
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
abvoltvolt (V)1.0E-08
acceleration of free fall, standard (gn)meter per second squared (m / s2)9.806 65E+00
acre (based on U.S. survey foot) square meter (m2)4.046 873E+03
acre foot (based on U.S. survey foot) 7cubic meter (m3)1.233 489E+03
ampere hour (A · h)coulomb (C)3.6E+03
ångström (Å)meter (m)1.0E-10
ångström (Å)nanometer (nm)1.0E-01
are (a)square meter (m2)1.0E+02
astronomical unit (ua)meter (m)1.495 979E+11
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

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B
To convert fromtoMultiply by
bar (bar)pascal (Pa)1.0E+05
bar (bar)kilopascal (kPa)1.0E+02
barn (b)square meter (m2)1.0E-28
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 873E+02
biot (Bi)ampere (A)1.0E+01
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
British 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
British 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
British 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
British 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
British 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
British 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
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 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
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 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 unitth per minute (Btuth/min)watt (W)1.757 250E+01
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
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
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
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
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
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/(in2 · s)]watt per square meter (W/m2)1.634 246E+06
bushel (U.S.) (bu)cubic meter (m3)3.523 907E-02
bushel (U.S.) (bu)liter (L)3.523 907E+01

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C
To convert fromtoMultiply by
calorieIT (calIT) 10joule (J)4.1868E+00
calorieth (calth) 10joule (J)4.184E+00
calorie (cal) (mean)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
calorieth per centimeter second degree Celsius [calth/(cm · s · °C)]watt per meter kelvin [W/(m · K)]4.184E+02
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
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
calorieth per minute (calth/min)watt (W)6.973 333E-02
calorieth per second (calth/s)watt (W)4.184E+00
calorieth per square centimeter (calth/cm2)joule per square meter (J/m2)4.184E+04
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
candela per square inch (cd/in2)candela per square meter (cd/m2)1.550 003E+03
carat, metrickilogram (kg)2.0E-04
carat, metricgram (g)2.0E-01
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
centipoise (cP)pascal second (Pa · s)1.0E-03
centistokes (cSt)meter squared per second (m2/s)1.0E-06
chain (based on U.S. survey foot) (ch) 7meter (m)2.011 684E+01
circular milsquare meter (m2)5.067 075E-10
circular milsquare millimeter (mm2)5.067 075E-04
closquare meter kelvin per watt (m2 · K/W)1.55E-01
cord (128 ft3)cubic meter (m3)3.624 556E+00
cubic foot (ft3)cubic meter (m3)2.831 685E-02
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 (in3) 13cubic meter (m3)1.638 706E-05
cubic inch per minute (in3/min)cubic meter per second (m3/s)2.731 177E-07
cubic mile (mi3)cubic meter (m3)4.168 182E+09
cubic yard (yd3)cubic meter (m3)7.645 549E-01
cubic yard per minute (yd3/min)cubic meter per second (m3/s)1.274 258E-02
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
curie (Ci)becquerel (Bq)3.7E+10

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D
To convert fromtoMultiply by
darcy 14meter squared (m2)9.869 233E-13
day (d)second (s)8.64E+04
day (sidereal)second (s)8.616 409E+04
debye (D)coulomb meter (C · m)3.335 641E-30
degree (angle) (°)radian (rad)1.745 329E-02
degree Celsius (temperature) (°C)kelvin (K)T/K = t/°C + 273.15
degree Celsius (temperature interval) (°C)kelvin (K)1.0E+00
degree centigrade (temperature) 15degree Celsius (°C)t/°C ≈ t/deg. cent.
degree centigrade (temperature interval) 15degree Celsius (°C)1.0E+00
degree Fahrenheit (temperature) (°F)degree Celsius (°C)t/°C = (t/°F - 32)/1.8
degree Fahrenheit (temperature) (°F)kelvin (K)T/K = (t/°F + 459.67)/1.8
degree Fahrenheit (temperature interval) (°F)degree Celsius (°C)5.555 556E-01
degree Fahrenheit (temperature interval) (°F)kelvin (K)5.555 556E-01
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 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
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+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
degree Rankine (°R)kelvin (K)T/K = (T/°R)/1.8
degree Rankine (temperature interval) (°R)kelvin (K)5.555 556E-01
denierkilogram per meter (kg/m)1.111 111E-07
deniergram per meter (g/m)1.111 111E-04
dyne (dyn)newton (N)1.0E-05
dyne centimeter (dyn · cm)newton meter (N · m)1.0E-07
dyne per square centimeter (dyn/cm2)pascal (Pa)1.0E-01

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E
To convert fromtoMultiply by
electronvolt (eV)joule (J)1.602 177E-19
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
erg (erg)joule (J)1.0E-07
erg per second (erg/s)watt (W)1.0E-07
erg per square centimeter second [erg/(cm2 · s)]watt per square meter (W/m2)1.0E-03
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

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F
To convert fromtoMultiply by
faraday (based on carbon 12)coulomb (C)9.648 531E+04
fathom (based on U.S. survey foot) 7meter (m)1.828 804E+00
fermimeter (m)1.0E-15
fermifemtometer (fm)1.0E+00
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
foot (ft)meter (m)3.048E-01
foot (U.S. survey) (ft) 7meter (m)3.048 006E-01
footcandlelux (lx)1.076 391E+01
footlambertcandela per square meter (cd/m2)3.426 259E+00
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
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
foot per second squared (ft/s2)meter per second squared (m/s2)3.048E-01
foot poundaljoule (J)4.214 011E-02
foot pound-force (ft · lbf)joule (J)1.355 818E+00
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
foot to the fourth power (ft4) 16meter to the fourth power (m4)8.630 975E-03
franklin (Fr)coulomb (C)3.335 641E-10

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G
To convert fromtoMultiply by
gal (Gal)meter per second squared (m/s2)1.0E-02
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
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 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
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
gamma (γ)tesla (T)1.0E-09
gauss (Gs, G)tesla (T)1.0E-04
gilbert (Gi)ampere (A)7.957 747E-01
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
gon (also called grade) (gon)radian (rad)1.570 796E-02
gon (also called grade) (gon)degree (angle) (°)9.0E-01
grain (gr)kilogram (kg)6.479 891E-05
grain (gr)milligram (mg)6.479 891E+01
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-force per square centimeter (gf/cm2)pascal (Pa)9.806 65E+01
gram per cubic centimeter (g/cm3)kilogram per cubic meter (kg/m3)1.0E+03

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H
To convert fromtoMultiply by
hectare (ha)square meter (m2)1.0E+04
horsepower (550 ft · lbf/s) (hp)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
hour (h)second (s)3.6E+03
hour (sidereal)second (s)3.590 170E+03
hundredweight (long, 112 lb)kilogram (kg)5.080 235E+01
hundredweight (short, 100 lb)kilogram (kg)4.535 924E+01

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I
To convert fromtoMultiply by
inch (in)meter (m)2.54E-02
inch (in)centimeter (cm)2.54E+00
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
inch per second (in/s)meter per second (m/s)2.54E-02
inch per second squared (in/s2)meter per second squared (m/s2)2.54E-02
inch to the fourth power (in4) 16meter to the fourth power (m4)4.162 314E-07

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K
To convert fromtoMultiply by
kayser (K)reciprocal meter (m-1)1.0E+02
kelvin (K)degree Celsius (°C)t/°C = T/K - 273.15
kilocalorieIT (kcalIT)joule (J)4.1868E+03
kilocalorieth (kcalth)joule (J)4.184E+03
kilocalorie (mean) (kcal)joule (J)4.190 02E+03
kilocalorieth per minute (kcalth/min)watt (W)6.973 333E+01
kilocalorieth per second (kcalth/s)watt (W)4.184E+03
kilogram-force (kgf)newton (N)9.806 65E+00
kilogram-force meter (kgf · m)newton meter (N · m)9.806 65E+00
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
kilogram-force second squared per meter (kgf · s2/m)kilogram (kg)9.806 65E+00
kilometer per hour (km/h)meter per second (m/s)2.777 778E-01
kilopond (kilogram-force) (kp)newton (N)9.806 65E+00
kilowatt hour (kW · h)joule (J)3.6E+06
kilowatt hour (kW · h)megajoule (MJ)3.6E+00
kip (1 kip= 1000 lbf)newton (N)4.448 222E+03
kip (1 kip= 1000 lbf)kilonewton (kN)4.448 222E+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
knot (nautical mile per hour)meter per second (m/s)5.144 444E-01

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L
To convert fromtoMultiply by
lambert 17candela per square meter (cd/m2)3.183 099E+03
langley (calth/cm2)joule per square meter (J/m2)4.184E+04
light year (l.y.) 18meter (m)9.460 73E+15
liter (L) 19cubic meter (m3)1.0E-03
lumen per square foot (lm/ft2)lux (lx)1.076 391E+01

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M
To convert fromtoMultiply by
maxwell (Mx)weber (Wb)1.0E-08
mhosiemens (S)1.0E+00
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
mil (angle)radian (rad)9.817 477E-04
mil (angle)degree (°)5.625E-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
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
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
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 (mm H2O) 12pascal (Pa)9.806 65E+00
minute (angle) (′)radian (rad)2.908 882E-04
minute (min)second (s)6.0E+01
minute (sidereal)second (s)5.983 617E+01

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O
To convert fromtoMultiply by
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
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
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
ounce (avoirdupois)-force (ozf)newton (N)2.780 139E-01
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
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
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

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P
To convert fromtoMultiply by
parsec (pc)meter (m)3.085 678E+16
peck (U.S.) (pk)cubic meter (m3)8.809 768E-03
peck (U.S.) (pk)liter (L)8.809 768E+00
pennyweight (dwt)kilogram (kg)1.555 174E-03
pennyweight (dwt)gram (g)1.555 174E+00
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)]5.74525E-11
perm inch (0 °C)kilogram per pascal second meter [kg/(Pa·s·m)]1.45322E-12
perm inch (23 °C)kilogram per pascal second meter [kg/(Pa·s·m)]1.45929E-12
phot (ph)lux (lx)1.0E+04
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
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
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
poise (P)pascal second (Pa · s)1.0E-01
pound (avoirdupois) (lb) 22kilogram (kg)4.535 924E-01
pound (troy or apothecary) (lb)kilogram (kg)3.732 417E-01
poundalnewton (N)1.382 550E-01
poundal per square footpascal (Pa)1.488 164E+00
poundal second per square footpascal second (Pa · s)1.488 164E+00
pound foot squared (lb · ft2)kilogram meter squared (kg · m2)4.214 011E-02
pound-force (lbf) 23newton (N)4.448 222E+00
pound-force foot (lbf · ft)newton meter (N · m)1.355 818E+00
pound-force foot per inch (lbf · ft/in)newton meter per meter (N · m/m)5.337 866E+01
pound-force inch (lbf · in)newton meter (N · m)1.129 848E-01
pound-force inch per inch (lbf · in/in)newton meter per meter (N · m/m)4.448 222E+00
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
pound-force per pound (lbf/lb) (thrust to mass ratio)newton per kilogram (N/kg)9.806 65E+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
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 inch squared (lb · in2)kilogram meter squared (kg ·m2)2.926 397E-04
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 foot (lb/ft)kilogram per meter (kg/m)1.488 164E+00
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
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
pound per horsepower hour [lb/(hp · h)]kilogram per joule (kg/J)1.689 659E-07
pound per hour (lb/h)kilogram per second (kg/s)1.259 979E-04
pound per inch (lb/in)kilogram per meter (kg/m)1.785 797E+01
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
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
pound per yard (lb/yd)kilogram per meter (kg/m)4.960 546E-01
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

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Q
To convert fromtoMultiply by
quad (1015 BtuIT11joule (J)1.055 056E+18
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

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R
To convert fromtoMultiply by
rad (absorbed dose) (rad)gray (Gy)1.0E-02
rem (rem)sievert (Sv)1.0E-02
revolution (r)radian (rad)6.283 185E+00
revolution per minute (rpm) (r/min)radian per second (rad/s)1.047 198E-01
rhereciprocal pascal second (Pa · s)-11.0E+01
rod (based on U.S. survey foot) (rd) 7meter (m)5.029 210E+00
roentgen (R)coulomb per kilogram (C/kg)2.58E-04
rpm (revolution per minute) (r/min)radian per second (rad/s)1.047 198E-01

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S
To convert fromtoMultiply by
second (angle) (′′)radian (rad)4.848 137E-06
second (sidereal)second (s)9.972 696E-01
shakesecond (s)1.0E-08
shakenanosecond (ns)1.0E+01
slug (slug)kilogram (kg)1.459 390E+01
slug per cubic foot (slug/ft3)kilogram per cubic meter (kg/m3)5.153 788E+02
slug per foot second [slug/(ft · s)]pascal second (Pa · s)4.788 026E+01
square foot (ft2)square meter (m2)9.290 304E-02
square foot per hour (ft2/h)square meter per second (m2/s)2.580 64E-05
square foot per second (ft2/s)square meter per second (m2/s)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) (mi27square meter (m2)2.589 998E+06
square mile (based on U.S. survey foot) (mi27square kilometer (km2)2.589 998E+00
square yard (yd2)square meter (m2)8.361 274E-01
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
stere (st)cubic meter (m3)1.0E+00
stilb (sb)candela per square meter (cd/m2)1.0E+04
stokes (St)meter squared per second (m2/s)1.0E-04

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T
To convert fromtoMultiply by
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
texkilogram per meter (kg/m)1.0E-06
therm (EC) 24joule (J)1.055 06E+08
therm (U.S.) 24joule (J)1.054 804E+08
ton, assay (AT)kilogram (kg)2.916 667E-02
ton, assay (AT)gram (g)2.916 667E+01
ton-force (2000 lbf)newton (N)8.896 443E+03
ton-force (2000 lbf)kilonewton (kN)8.896 443E+00
ton, long (2240 lb)kilogram (kg)1.016 047E+03
ton, long, per cubic yardkilogram per cubic meter (kg/m3)1.328 939E+03
ton, metric (t)kilogram (kg)1.0E+03
tonne (called "metric ton" in U.S.) (t)kilogram (kg)1.0E+03
ton of refrigeration (12 000 BtuIT/h)watt (W)3.516 853E+03
ton of TNT (energy equivalent) 25joule (J)4.184E+09
ton, registercubic meter (m3)2.831 685E+00
ton, short (2000 lb)kilogram (kg)9.071 847E+02
ton, short, per cubic yardkilogram per cubic meter (kg/m3)1.186 553E+03
ton, short, per hourkilogram per second (kg/s)2.519 958E-01
torr (Torr)pascal (Pa)1.333 224E+02

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U
To convert fromtoMultiply by
unit poleweber (Wb)1.256 637E-07

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W
To convert fromtoMultiply by
watt hour (W · h)joule (J)3.6E+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
watt second (W · s)joule (J)1.0E+00

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Y
To convert fromtoMultiply by
yard (yd)meter (m)9.144E-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
Created February 1, 2016, Updated August 25, 2016