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Homeschool Fast Facts!
-Conversion Factors-

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The following tables of conversion factors are from the United States National Institute of Standards and Technology (NIST). We could think of no better source for conversion factors and offer them unaltered. Please visit NIST for more information.

B.8 Factors for Units Listed Alphabetically

Factors in boldface are exact

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 ()	1.0	E-09
abvolt	volt (V)	1.0	E-08
acceleration of free fall, standard (g_n)	meter per second squared (m/s²)	9.806 65	E+00
acre (based on U.S. survey foot) 9	square meter (m²)	4.046 873	E+03
acre foot (based on U.S. survey foot) 9	cubic meter (m³)	1.233 489	E+03
ampere hour (A · h)	coulomb (C)	3.6	E+03
ångström (Å)	meter (m)	1.0	E-10
ångström (Å)	nanometer (nm)	1.0	E-01
are (a)	square meter (m²)	1.0	E+02
astronomical unit (AU)	meter (m)	1.495 979	E+11
atmosphere, standard (atm)	pascal (Pa)	1.013 25	E+05
atmosphere, standard (atm)	kilopascal (kPa)	1.013 25	E+02
atmosphere, technical (at) 10	pascal (Pa)	9.806 65	E+04
atmosphere, technical (at) 10	kilopascal (kPa)	9.806 65	E+01

To convert from	to	Multiply by

bar (bar)	pascal (Pa)	1.0	E+05
bar (bar)	kilopascal (kPa)	1.0	E+02
barn (b)	square meter (m²)	1.0	E-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)	1.589 873	E+02
biot (Bi)	ampere (A)	1.0	E+01
British thermal unit_IT (Btu_IT) 11	joule (J)	1.055 056	E+03
British thermal unit_th (Btu_th) 11	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
British thermal unit_IT foot per hour square foot degree Fahrenheit [Btu_IT · ft/(h · ft² · °F)]	watt per meter kelvin [W/(m · K)]	1.730 735	E+00
British thermal unit_th foot per hour square foot degree Fahrenheit [Btu_th · ft/(h · ft² · °F)]	watt per meter kelvin [W/(m · K)]	1.729 577	E+00
British thermal unit_IT inch per hour square foot degree Fahrenheit [Btu_IT · in/(h · ft² · °F)]	watt per meter kelvin [W/(m · K)]	1.442 279	E-01
British thermal unit_th inch per hour square foot degree Fahrenheit [Btu_th · in/(h · ft² · °F)]	watt per meter kelvin [W/(m · K)]	1.441 314	E-01
British thermal unit_IT inch per second square foot degree Fahrenheit [Btu_IT · in/(s · ft² · °F)]	watt per meter kelvin [W/(m · K)]	5.192 204	E+02
British thermal unit_th inch per second square foot degree Fahrenheit [Btu_th · in/(s · ft² · °F)]	watt per meter kelvin [W/(m · K)]	5.188 732	E+02
British thermal unit_IT per cubic foot (Btu_IT/ft³)	joule per cubic meter (J/m³)	3.725 895	E+04
British thermal unit_th per cubic foot (Btu_th/ft³)	joule per cubic meter (J/m³)	3.723 403	E+04
British thermal unit_IT per degree Fahrenheit (Btu_IT/°F)	joule per kelvin (J/k)	1.899 101	E+03
British thermal unit_th per degree Fahrenheit (Btu_th/°F)	joule per kelvin (J/k)	1.897 830	E+03
British thermal unit_IT per degree Rankine (Btu_IT/°R)	joule per kelvin (J/k)	1.899 101	E+03
British thermal unit_th per degree Rankine (Btu_th/°R)	joule per kelvin (J/k)	1.897 830	E+03
British thermal unit_IT per hour (Btu_IT/h)	watt (W)	2.930 711	E-01
British thermal unit_th per hour (Btu_th/h)	watt (W)	2.928 751	E-01
British thermal unit_IT per hour square foot degree Fahrenheit [Btu_IT/(h · ft² · °F)]	watt per square meter kelvin [W/(m² · K)]	5.678 263	E+00
British thermal unit_th per hour square foot degree Fahrenheit [Btu_th/(h · ft² · °F)]	watt per square meter kelvin [W/(m² · K)]	5.674 466	E+00
British thermal unit_th per minute (Btu_th/min)	watt (W)	1.757 250	E+01
British thermal unit_IT per pound (Btu_IT/lb)	joule per kilogram (J/kg)	2.326	E+03
British thermal unit_th per pound (Btu_th/lb)	joule per kilogram (J/kg)	2.324 444	E+03
British thermal unit_IT per pound degree Fahrenheit [Btu_IT/(lb · °F)]	joule per kilogram kelvin [J/(kg · K)]	4.1868	E+03
British thermal unit_th per pound degree Fahrenheit [Btu_th/(lb · °F)]	joule per kilogram kelvin [J/(kg · K)]	4.184	E+03
British thermal unit_IT per pound degree Rankine [Btu_IT/(lb · °R)]	joule per kilogram kelvin [J/(kg · K)]	4.1868	E+03
British thermal unit_th per pound degree Rankine [Btu_th/(lb · °R)]	joule per kilogram kelvin [J/(kg · K)]	4.184	E+03
British thermal unit_IT per second (Btu_IT/s)	watt (W)	1.055 056	E+03
British thermal unit_th per second (Btu_th/s)	watt (W)	1.054 350	E+03
British thermal unit_IT per second square foot degree Fahrenheit [Btu_IT/(s · ft² · °F)]	watt per square meter kelvin [W/(m² · K)]	2.044 175	E+04
British thermal unit_th per second square foot degree Fahrenheit [Btu_th/(s · ft² · °F)]	watt per square meter kelvin [W/(m² · K)]	2.042 808	E+04
British thermal unit_IT per square foot (Btu_IT/ft²)	joule per square meter (J/m²)	1.135 653	E+04
British thermal unit_th per square foot (Btu_th/ft²)	joule per square meter (J/m²)	1.134 893	E+04
British thermal unit_IT per square foot hour [Btu_IT/(ft² · h)]	watt per square meter (W/m²)	3.154 591	E+00
British thermal unit_th per square foot hour [Btu_th/(ft² · h)]	watt per square meter (W/m²)	3.152 481	E+00
British thermal unit_th per square foot minute [Btu_th/(ft² · min)]	watt per square meter (W/m²)	1.891 489	E+02
British thermal unit_IT per square foot second [Btu_IT/(ft² · s)]	watt per square meter (W/m²)	1.135 653	E+04
British thermal unit_th per square foot second Btu_th/(ft² · s)]	watt per square meter (W/m²)	1.134 893	E+04
British thermal unit_th per square inch second [Btu_th/(in² · s)]	watt per square meter (W/m²)	1.634 246	E+06
bushel (U.S.) (bu)	cubic meter (m³)	3.523 907	E-02
bushel (U.S.) (bu)	liter (L)	3.523 907	E+01

To convert from	to	Multiply by

calorie_IT (cal_IT) 11	joule (J)	4.1868	E+00
calorie_th (cal_th) 11	joule (J)	4.184	E+00
calorie (cal) (mean)	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
calorie_IT, kilogram (nutrition) 12	joule (J)	4.1868	E+03
calorie_th , kilogram (nutrition) 12	joule (J)	4.184	E+03
calorie (mean), kilogram (nutrition) 12	joule (J)	4.190 02	E+03
calorie_th per centimeter second degree Celsius [cal_th/(cm · s · °C)]	watt per meter kelvin [W/(m · K)]	4.184	E+02
calorie_IT per gram (cal_IT/g)	joule per kilogram (J/kg)	4.1868	E+03
calorie_th per gram (cal_th/g)	joule per kilogram (J/kg)	4.184	E+03
calorie_IT per gram degree Celsius [cal_IT/(g · °C)]	joule per kilogram kelvin [J/(kg · K)]	4.1868	E+03
calorie_th per gram degree Celsius [cal_th/(g · °C)]	joule per kilogram kelvin [J/(kg · K)]	4.184	E+03
calorie_IT per gram kelvin [cal_IT/(g · K)]	joule per kilogram kelvin [J/(kg · K)]	4.1868	E+03
calorie_th per gram kelvin [cal_th/(g·K)]	joule per kilogram kelvin [J/(kg · K)]	4.184	E+03
calorie_th per minute (cal_th/min)	watt (W)	6.973 333	E-02
calorie_th per second (cal_th/s)	watt (W)	4.184	E+00
calorie_th per square centimeter (cal_th/cm²)	joule per square meter (J/m²)	4.184	E+04
calorie_th per square centimeter minute [cal_th/(cm² · min)]	watt per square meter (W/m²)	6.973 333	E+02
calorie_th per square centimeter second [cal_th/(cm² · s)]	watt per square meter (W/m²)	4.184	E+04
candela per square inch (cd/in²)	candela per square meter (cd/m²)	1.550 003	E+03
carat, metric	kilogram (kg)	2.0	E-04
carat, metric	gram (g)	2.0	E-01
centimeter of mercury (0 °C) 13	pascal (Pa)	1.333 22	E+03
centimeter of mercury (0 °C) 13	kilopascal (kPa)	1.333 22	E+00
centimeter of mercury, conventional (cmHg) 13	pascal (Pa)	1.333 224	E+03
centimeter of mercury, conventional (cmHg) 13	kilopascal (kPa)	1.333 224	E+00
centimeter of water (4 °C) 13	pascal (Pa)	9.806 38	E+01
centimeter of water, conventional (cm H₂O) 13	pascal (Pa)	9.806 65	E+01
centipoise (cP)	pascal second (Pa · s)	1.0	E-03
centistokes (cSt)	meter squared per second (m²/s)	1.0	E-06
chain (based on U.S. survey foot) (ch) 9	meter (m)	2.011 684	E+01
circular mil	square meter (m²)	5.067 075	E-10
circular mil	square millimeter (mm²)	5.067 075	E-04
clo	square meter kelvin per watt (m² · K/W)	1.55	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 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 (in³) 14	cubic meter (m³)	1.638 706	E-05
cubic inch per minute (in³/min)	cubic meter per second (m³/s)	2.731 177	E-07
cubic mile (mi³)	cubic meter (m³)	4.168 182	E+09
cubic yard (yd³)	cubic meter (m³)	7.645 549	E-01
cubic yard per minute (yd³/min)	cubic meter per second (m³/s)	1.274 258	E-02
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
curie (Ci)	becquerel (Bq)	3.7	E+10

To convert from	to	Multiply by

darcy 15	meter squared (m²)	9.869 233	E-13
day (d)	second (s)	8.64	E+04
day (sidereal)	second (s)	8.616 409	E+04
debye (D)	coulomb meter (C · m)	3.335 641	E-30
degree (angle) (°)	radian (rad)	1.745 329	E-02
degree Celsius (temperature) (°C)	kelvin (K)	T/K = t/°C + 273.15
degree Celsius (temperature interval) (°C)	kelvin (K)	1.0	E+00
degree centigrade (temperature) 16	degree Celsius (°C)	t/°C t/deg. cent.
degree centigrade (temperature interval) 16	degree Celsius (°C)	1.0	E+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)	5.555 556	E-01
degree Fahrenheit (temperature interval) (°F)	kelvin (K)	5.555 556	E-01
degree Fahrenheit hour per British thermal unit_IT (°F · h/Btu_IT)	kelvin per watt (K/W)	1.895 634	E+00
degree Fahrenheit hour per British thermal unit_th (°F · h/Btu_th)	kelvin per watt (K/W)	1.896 903	E+00
degree Fahrenheit hour square foot per British thermal unit_IT (°F · h · ft²/Btu_IT)	square meter kelvin per watt (m² · K/W)	1.761 102	E-01
degree Fahrenheit hour square foot per British thermal unit_th (°F · h · ft²/Btu_th)	square meter kelvin per watt (m² · K/W)	1.762 280	E-01
degree Fahrenheit hour square foot per British thermal unit_IT inch [°F · h · ft²/(Btu_IT · in)]	meter kelvin per watt (m · K/W)	6.933 472	E+00
degree Fahrenheit hour square foot per British thermal unit_th inch [°F · h · ft²/(Btu_th · in)]	meter kelvin per watt (m · K/W)	6.938 112	E+00
degree Fahrenheit second per British thermal unit_IT (°F · s/Btu_IT)	kelvin per watt (K/W)	5.265 651	E-04
degree Fahrenheit second per British thermal unit_th (°F · s/Btu_th)	kelvin per watt (K/W)	5.269 175	E-04
degree Rankine (°R)	kelvin (K)	T/K = (T/°R)/1.8
degree Rankine (temperature interval) (°R)	kelvin (K)	5.555 556	E-01
denier	kilogram per meter (kg/m)	1.111 111	E-07
denier	gram per meter (g/m)	1.111 111	E-04
dyne (dyn)	newton (N)	1.0	E-05
dyne centimeter (dyn · cm)	newton meter (N · m)	1.0	E-07
dyne per square centimeter (dyn/cm²)	pascal (Pa)	1.0	E-01

To convert from	to	Multiply by

electronvolt (eV)	joule (J)	1.602 177	E-19
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 ()	1.0	E-09
erg (erg)	joule (J)	1.0	E-07
erg per second (erg/s)	watt (W)	1.0	E-07
erg per square centimeter second [erg/(cm² · s)]	watt per square meter (W/m²)	1.0	E-03
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 ()	8.987 552	E+11

To convert from	to	Multiply by

faraday (based on carbon 12)	coulomb (C)	9.648 531	E+04
fathom (based on U.S. survey foot) 9	meter (m)	1.828 804	E+00
fermi	meter (m)	1.0	E-15
fermi	femtometer (fm)	1.0	E+00
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
foot (ft)	meter (m)	3.048	E-01
foot (U.S. survey) (ft) 9	meter (m)	3.048 006	E-01
footcandle	lux (lx)	1.076 391	E+01
footlambert	candela per square meter (cd/m²)	3.426 259	E+00
foot of mercury, conventional (ftHg) 13	pascal (Pa)	4.063 666	E+04
foot of mercury, conventional (ftHg) 13	kilopascal (kPa)	4.063 666	E+01
foot of water (39.2 °F) 13	pascal (Pa)	2.988 98	E+03
foot of water (39.2 °F) 13	kilopascal (kPa)	2.988 98	E+00
foot of water, conventional (ftH₂O) 13	pascal (Pa)	2.989 067	E+03
foot of water, conventional (ftH₂O) 13	kilopascal (kPa)	2.989 067	E+00
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
foot per second squared (ft/s²)	meter per second squared (m/s²)	3.048	E-01
foot poundal	joule (J)	4.214 011	E-02
foot pound-force (ft · lbf)	joule (J)	1.355 818	E+00
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
foot to the fourth power (ft⁴) 17	meter to the fourth power (m⁴)	8.630 975	E-03
franklin (Fr)	coulomb (C)	3.335 641	E-10

To convert from	to	Multiply by

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

To convert from	to	Multiply by

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

To convert from	to	Multiply by

inch (in)	meter (m)	2.54	E-02
inch (in)	centimeter (cm)	2.54	E+00
inch of mercury (32 °F) 13	pascal (Pa)	3.386 38	E+03
inch of mercury (32 °F) 13	kilopascal (kPa)	3.386 38	E+00
inch of mercury (60 °F) 13	pascal (Pa)	3.376 85	E+03
inch of mercury (60 °F) 13	kilopascal (kPa)	3.376 85	E+00
inch of mercury, conventional (inHg) 13	pascal (Pa)	3.386 389	E+03
inch of mercury, conventional (inHg) 13	kilopascal (kPa)	3.386 389	E+00
inch of water (39.2 °F) 13	pascal (Pa)	2.490 82	E+02
inch of water (60 °F) 13	pascal (Pa)	2.4884	E+02
inch of water, conventional (inH₂O) 13	pascal (Pa)	2.490 889	E+02
inch per second (in/s)	meter per second (m/s)	2.54	E-02
inch per second squared (in/s²)	meter per second squared (m/s²)	2.54	E-02
inch to the fourth power (in⁴) 17	meter to the fourth power (m⁴)	4.162 314	E-07

To convert from	to	Multiply by

kayser (K)	reciprocal meter (m^-1)	1.0	E+02
kelvin (K)	degree Celsius (°C)	t/°C = T/K - 273.15
kilocalorie_IT (kcal_IT)	joule (J)	4.1868	E+03
kilocalorie_th (kcal_th)	joule (J)	4.184	E+03
kilocalorie (mean) (kcal)	joule (J)	4.190 02	E+03
kilocalorie_th per minute (kcal_th/min)	watt (W)	6.973 333	E+01
kilocalorie_th per second (kcal_th/s)	watt (W)	4.184	E+03
kilogram-force (kgf)	newton (N)	9.806 65	E+00
kilogram-force meter (kgf · m)	newton meter (N · m)	9.806 65	E+00
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
kilogram-force second squared per meter (kgf · s²/m)	kilogram (kg)	9.806 65	E+00
kilometer per hour (km/h)	meter per second (m/s)	2.777 778	E-01
kilopond (kilogram-force) (kp)	newton (N)	9.806 65	E+00
kilowatt hour (kW · h)	joule (J)	3.6	E+06
kilowatt hour (kW · h)	megajoule (MJ)	3.6	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
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
knot (nautical mile per hour)	meter per second (m/s)	5.144 444	E-01

To convert from	to	Multiply by

lambert 18	candela per square meter (cd/m²)	3.183 099	E+03
langley (cal_th/cm²)	joule per square meter (J/m²)	4.184	E+04
light year (l.y.) 19	meter (m)	9.460 73	E+15
liter (L) 20	cubic meter (m³)	1.0	E-03
lumen per square foot (lm/ft²)	lux (lx)	1.076 391	E+01

To convert from	to	Multiply by

maxwell (Mx)	weber (Wb)	1.0	E-08
mho	siemens (S)	1.0	E+00
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
mil (angle)	radian (rad)	9.817 477	E-04
mil (angle)	degree (°)	5.625	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) 9	meter (m)	1.609 347	E+03
mile (based on U.S. survey foot) (mi) 9	kilometer (km)	1.609 347	E+00
mile, nautical 21	meter (m)	1.852	E+03
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) 22	liter 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)	4.4704	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
millibar (mbar)	pascal (Pa)	1.0	E+02
millibar (mbar)	kilopascal (kPa)	1.0	E-01
millimeter of mercury, conventional (mmHg)13	pascal (Pa)	1.333 224	E+02
millimeter of water, conventional (mm H₂O) 13	pascal (Pa)	9.806 65	E+00
minute (angle) ()	radian (rad)	2.908 882	E-04
minute (min)	second (s)	6.0	E+01
minute (sidereal)	second (s)	5.983 617	E+01

To convert from	to	Multiply by

oersted (Oe)	ampere per meter (A/m)	7.957 747	E+01
ohm centimeter ( · cm)	ohm meter ( · m)	1.0	E-02
ohm circular-mil per foot	ohm meter ( · m)	1.662 426	E-09
ohm circular-mil per foot	ohm square millimeter per meter ( · mm²/m)	1.662 426	E-03
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
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
ounce (avoirdupois)-force (ozf)	newton (N)	2.780 139	E-01
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
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
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

To convert from	to	Multiply by

parsec (pc)	meter (m)	3.085 678	E+16
peck (U.S.) (pk)	cubic meter (m³)	8.809 768	E-03
peck (U.S.) (pk)	liter (L)	8.809 768	E+00
pennyweight (dwt)	kilogram (kg)	1.555 174	E-03
pennyweight (dwt)	gram (g)	1.555 174	E+00
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)]	5.74525	E-11
perm inch (0 °C)	kilogram per pascal second meter [kg/(Pa·s·m)]	1.45322	E-12
perm inch (23 °C)	kilogram per pascal second meter [kg/(Pa·s·m)]	1.45929	E-12
phot (ph)	lux (lx)	1.0	E+04
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
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
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
poise (P)	pascal second (Pa · s)	1.0	E-01
pound (avoirdupois) (lb) 23	kilogram (kg)	4.535 924	E-01
pound (troy or apothecary) (lb)	kilogram (kg)	3.732 417	E-01
poundal	newton (N)	1.382 550	E-01
poundal per square foot	pascal (Pa)	1.488 164	E+00
poundal second per square foot	pascal second (Pa · s)	1.488 164	E+00
pound foot squared (lb · ft²)	kilogram meter squared (kg · m²)	4.214 011	E-02
pound-force (lbf) 24	newton (N)	4.448 222	E+00
pound-force foot (lbf · ft)	newton meter (N · m)	1.355 818	E+00
pound-force foot per inch (lbf · ft/in)	newton meter per meter (N · m/m)	5.337 866	E+01
pound-force inch (lbf · in)	newton meter (N · m)	1.129 848	E-01
pound-force inch per inch (lbf · in/in)	newton meter per meter (N · m/m)	4.448 222	E+00
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
pound-force per pound (lbf/lb) (thrust to mass ratio)	newton per kilogram (N/kg)	9.806 65	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
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 inch squared (lb · in²)	kilogram meter squared (kg ·m²)	2.926 397	E-04
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 foot (lb/ft)	kilogram per meter (kg/m)	1.488 164	E+00
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
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
pound per horsepower hour [lb/(hp · h)]	kilogram per joule (kg/J)	1.689 659	E-07
pound per hour (lb/h)	kilogram per second (kg/s)	1.259 979	E-04
pound per inch (lb/in)	kilogram per meter (kg/m)	1.785 797	E+01
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
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
pound per yard (lb/yd)	kilogram per meter (kg/m)	4.960 546	E-01
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

To convert from	to	Multiply by

quad (10¹⁵ Btu_IT) 11	joule (J)	1.055 056	E+18
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

To convert from	to	Multiply by

rad (absorbed dose) (rad)	gray (Gy)	1.0	E-02
rem (rem)	sievert (Sv)	1.0	E-02
revolution (r)	radian (rad)	6.283 185	E+00
revolution per minute (rpm) (r/min)	radian per second (rad/s)	1.047 198	E-01
rhe	reciprocal pascal second [ (Pa · s)^-1]	1.0	E+01
rod (based on U.S. survey foot) (rd) 9	meter (m)	5.029 210	E+00
roentgen (R)	coulomb per kilogram (C/kg)	2.58	E-04
rpm (revolution per minute) (r/min)	radian per second (rad/s)	1.047 198	E-01

To convert from	to	Multiply by

second (angle) ()	radian (rad)	4.848 137	E-06
second (sidereal)	second (s)	9.972 696	E-01
shake	second (s)	1.0	E-08
shake	nanosecond (ns)	1.0	E+01
slug (slug)	kilogram (kg)	1.459 390	E+01
slug per cubic foot (slug/ft³)	kilogram per cubic meter (kg/m³)	5.153 788	E+02
slug per foot second [slug/(ft · s)]	pascal second (Pa · s)	4.788 026	E+01
square foot (ft²)	square meter (m²)	9.290 304	E-02
square foot per hour (ft²/h)	square meter per second (m²/s)	2.580 64	E-05
square foot per second (ft²/s)	square meter per second (m²/s)	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) 9	square meter (m²)	2.589 998	E+06
square mile (based on U.S. survey foot) (mi²) 9	square kilometer (km²)	2.589 998	E+00
square yard (yd²)	square meter (m²)	8.361 274	E-01
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 ()	8.987 552	E+11
statvolt	volt (V)	2.997 925	E+02
stere (st)	cubic meter (m³)	1.0	E+00
stilb (sb)	candela per square meter (cd/m²)	1.0	E+04
stokes (St)	meter squared per second (m²/s)	1.0	E-04

To convert from	to	Multiply by

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
tex	kilogram per meter (kg/m)	1.0	E-06
therm (EC) 25	joule (J)	1.055 06	E+08
therm (U.S.) 25	joule (J)	1.054 804	E+08
ton, assay (AT)	kilogram (kg)	2.916 667	E-02
ton, assay (AT)	gram (g)	2.916 667	E+01
ton-force (2000 lbf)	newton (N)	8.896 443	E+03
ton-force (2000 lbf)	kilonewton (kN)	8.896 443	E+00
ton, long (2240 lb)	kilogram (kg)	1.016 047	E+03
ton, long, per cubic yard	kilogram per cubic meter (kg/m³)	1.328 939	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 of refrigeration (12 000 Btu_IT/h)	watt (W)	3.516 853	E+03
ton of TNT (energy equivalent) 26	joule (J)	4.184	E+09
ton, register	cubic meter (m³)	2.831 685	E+00
ton, short (2000 lb)	kilogram (kg)	9.071 847	E+02
ton, short, per cubic yard	kilogram per cubic meter (kg/m³)	1.186 553	E+03
ton, short, per hour	kilogram per second (kg/s)	2.519 958	E-01
torr (Torr)	pascal (Pa)	1.333 224	E+02

To convert from	to	Multiply by

unit pole	weber (Wb)	1.256 637	E-07

To convert from	to	Multiply by

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

To convert from	to	Multiply by

yard (yd)	meter (m)	9.144	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

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Homeschool Fast Facts!-Conversion Factors-

B.8 Factors for Units Listed Alphabetically

Homeschool Fast Facts!
-Conversion Factors-