D SI Units and Conversions
Below is a table of conversion factors (source). Bold values indicate exact conversion values. Units in the first column are generally not used in NIST publications except those that are italicized.
Convert from | to | Multiply by | ||
---|---|---|---|---|
ångström | Å | nanometer | nm | 1.0E-01 |
astronomical unit | au | meter | m | 1.495979E+11 |
atmosphere, standard | atm | pascal | Pa | 1.01325E+05 |
bar | bar | pascal | Pa | 1.0E+05 |
cubic inch | in3 | cubic meter | m3 | 1.638706E-05 |
cubic yard | yd3 | cubic meter | m3 | 7.645549E-01 |
cup (US) | milliliter | mL | 2.365882E+02 | |
day | d | second | s | 8.64E+04 |
degree (angle) | ° | radian | rad | 1.745329E-02 |
electronvolt | eV | joule | J | 1.602177E-19 |
fluid ounce (US) | fl oz | milliliter | mL | 2.957353E+01 |
foot | ft | meter | m | 3.048E-01 |
gallon (US) | gal | liter | L | 3.785412 |
hour | h | second | s | 3.6E+03 |
inch | in | centimeter | cm | 2.54 |
kelvin | K | degree Celsius | °C | t/°C = t/K - 273.15 |
kilocalorieth | kcalth | kilojoule | kJ | 4.184 |
knot (nautical mile per hour) | meter per second | m/s | 5.144444E-01 | |
liter | L | cubic meter | m3 | 1.0E-03 |
micron | µ | meter | m | 1.0E-06 |
mile | mi | kilometer | km | 1.609344 |
mile per gallon (US) | mpg, mi/gal | kilometer per liter | km/L | 4.251435E-01 |
mile per hour | mi/h | kilometer per hour | km/h | 1.609344 |
mile, nautical | meter | m | 1.852E+03 | |
millimeter of mercury | mmhg | pascal | pa | 1.333224E+02 |
millimeter of water | mmH2O | pascal | pa | 9.80665 |
minute | min | second | s | 6.0E+01 |
ounce (avoirdupois) | oz | kg | g | 2.834952E-02 |
parsec | pc | meter | m | 3.085678E+16 |
peck (US) | pk | liter | L | 8.809768 |
pint (US liquid) | liq pt | liter | L | 4.731765E-01 |
pound (avoirdupois) | lb | kilogram | kg | 4.535924E-01 |
pound-force per square inch | psi; lbf/in2 | pascal | Pa | 6.894757E+03 |
quart (US liquid) | liq qt | liter | L | 1.101221 |
tablespoon | milliliter | mL | 1.478676E+01 | |
teaspoon | milliliter | mL | 4.928922 | |
ton, short (2000 lb) | kilogram | kg | 9.071847E+02 | |
torr | Torr | pascal | Pa | 1.333224E+02 |
yard | yd3 | meter | m | 9.144E-01 |
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 Celsius (temperature) | °C | kelvin | K | t/K = t/°C + 273.15 |
degree Celsius (temperature) | °C | degree Fahrenheit (temperature) | °F | t/°F = (t/C × 1.8) + 32 |