Conversion Factors to SI Units
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To convert from |
To |
Multiply by |
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acre |
square meter (m2) |
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angstrom |
meter (m) |
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|
are |
square meter (m2) |
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|
astronomical unit |
meter (m) |
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atmosphere, standard |
pascal (Pa) |
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|
bar |
pascal (Pa) |
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barn |
square meter (m2) |
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|
barrel (42 U.S. liquid gallons) |
cubic meter (m3) |
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|
Bohr magneton (/ib) |
J/T |
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|
Btu (International Table) |
joule (J) |
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|
Btu (mean) |
joule (J) |
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|
Btu (thermochemical) |
joule (J) |
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|
bushel |
cubic meter (m3) |
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|
calorie (International Table) |
joule (J) |
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|
calorie (mean) |
joule (J) |
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|
calorie (thermochemical) |
joule (J) |
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centipoise |
pascal second (Pa-s) |
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|
centistokes |
square millimeter per second (mm2/s) |
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|
cfm (cubic foot per minute) |
cubic meter per second (m3/s) |
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|
cubic inch |
cubic meter (m3) |
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|
cubic foot |
cubic meter (m3) |
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|
cubic yard |
cubic meter (m3) |
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|
curie |
becquerel (Bq) |
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|
debye |
coulomb meter (C-m) |
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|
degree (angle) |
radian (rad) |
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|
denier (international) |
kilogram per meter (kg/m) |
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|
tex* |
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|
|
dram (apothecaries’) |
kilogram (kg) |
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|
dram (avoirdupois) |
kilogram (kg) |
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|
dram (U.S. fluid) |
cubic meter (m3) |
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|
dyne |
newton (N) |
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|
dyne/cm |
newton per meter (N/m) |
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|
electronvqlt |
joule (J) |
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|
erg |
joule (J) |
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|
To convert from |
To |
Multiply by |
|
fathom |
meter (m) |
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|
fluid ounce (U.S.) |
cubic meter (m3) |
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|
foot |
meter (m) |
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|
footcandle |
lux (lx) |
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|
furlong |
meter (m) |
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|
gal |
meter per second squared (m/s2) |
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|
gallon (U.S. dry) |
cubic meter (m3) |
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|
gallon (U.S. liquid) |
cubic meter (m3) |
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|
gallon per minute (gpm) |
cubic meter per second (m3/s) |
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|
cubic meter per hour (m3/h) |
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|
|
gauss |
tesla (T) |
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|
gilbert |
ampere (A) |
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|
gill (U.S.) |
cubic meter (m3) |
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|
grade |
radian |
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|
grain |
kilogram (kg) |
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|
gram force per denier |
newton per tex (N/tex) |
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|
hectare |
square meter (m2) |
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|
horsepower (550 ft-lbf/s) |
watt (W) |
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|
horsepower (boiler) |
watt (W) |
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|
horsepower (electric) |
watt (W) |
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|
hundredweight (long) |
kilogram (kg) |
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|
hundredweight (short) |
kilogram (kg) |
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|
inch |
meter (m) |
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|
inch of mercury (32° F) |
pascal (Pa) |
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|
inch of water (39.2°F) •< |
pascal (Pa) |
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|
kilogram-force |
newton (N) |
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|
kilowatt hour |
megajoule (MJ) |
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|
kip |
newton (N) |
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|
knot (international) |
meter per second (m/S) |
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|
lambert |
candela per square meter (cd/m3) |
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|
league (British nautical) |
meter (m) |
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|
league (statute) |
meter (m) |
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|
light year |
meter (m) |
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|
liter (for fluids only) |
cubic meter (m3) |
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|
maxwell |
weber (Wb) |
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|
micron |
meter (m) |
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|
mil |
meter (m) |
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|
mile (statute) |
meter (m) |
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|
mile (U.S. nautical) |
meter (m) |
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|
mile per hour |
meter per second (m/s) |
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|
millibar |
pascal (Pa) |
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|
millimeter of mercury (0°C) |
pascal (Pa) |
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|
minute (angular) |
radian |
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|
myriagram |
kilogram (kg) |
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|
myriameter |
kilometer (km) |
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|
oersted |
ampere per meter (A/m) |
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|
ounce (avoirdupois) |
kilogram (kg) |
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|
ounce (troy) |
kilogram (kg) |
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|
ounce (U.S. fluid) |
cubic meter (m3) |
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|
ounce-force |
newton (N) |
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|
peck (U.S.) |
cubic meter (m3) |
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|
pennyweight |
kilogram (kg) |
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|
pint (U.S. dry) |
cubic meter (m3) |
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|
pint (U.S. liquid) |
cubic meter (m3) |
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|
poise (absolute viscosity) |
pascal second (Pa-s) |
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|
pound (avoirdupois) |
kilogram (kg) |
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|
pound (troy) |
kilogram (kg) |
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|
poundal |
newton (N) |
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|
pound-force |
newton (N) |
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|
pound force per square inch (psi) |
pascal (Pa) |
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|
quart (U.S. dry) |
cubic meter (m3) |
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|
quart (U.S. liquid) |
cubic meter (m3) |
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|
To convert from |
To |
Multiply by |
|
quintal |
kilogram (kg) |
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|
rad |
gray (Gy) |
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|
rod |
meter (m) |
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|
roentgen |
coulomb per kilogram (C/kg) |
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|
second (angle) |
radian (rad) |
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|
section |
square meter (m2) |
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|
slug |
kilogram (kg) |
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|
spherical candle power |
lumen (1m) |
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|
square inch |
square meter (m2) |
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|
square foot |
square meter (m2) |
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|
square mile |
square meter (m2) |
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|
square yard |
square meter (m2) |
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|
stere |
cubic meter (m3) |
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|
stokes (kinematic viscosity) |
square meter per second (m2/s) |
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|
tex |
kilogram per meter (kg/m) |
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|
ton (long, 2240 pounds) |
kilogram (kg) |
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|
ton (metric) (tonne) |
kilogram (kg) |
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|
ton (short, 2000 pounds) |
kilogram (kg) |
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|
torr |
pascal (Pa) |
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|
unit pole |
weber (Wb) |
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|
yard |
meter (m) |
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