Freedom units, begone!
Convert American oddities to proper SI units

How to use

Use decimal point, not comma. Example: ~~5,7~~, 5.7. Do not use any thousands separators.

Calculations are performed automatically upon input. Type into textboxes on either sides of the arrows to begin. Example: type "40" into the text box labelled "°C" to convert 40°C to degrees Fahrenheit. Do not use any unit signs (e.g. "°F", "L", "cm").

When using the ft/in↔cm calculator, increasing the inch value above 12 will automatically subtract 12 inches and add 1 foot. Decreasing the value below 0 will do the same.

Results are rounded to 1–3 digits!

Jump directly to: Temperature, milk & gasoline, fuel efficiency, height, medium distances, long distances, speed, pressure, yet more liquids.

Common fractions:

½: 0.5
⅓: 0.33…
¼: 0.25
⅛: 0.125
⅜: 0.375
⅙: 0.166…
⅚: 0.833…
⅞: 0.875

Temperature

°F ↔ °C

Milk & gas

gal ↔ L

Fuel efficiency

MPG ↔ L/100 km

Height

ft in ↔ cm

Medium distances

yd ↔ m

Long distances

mi ↔ km

Speed

mp/h ↔ km/h

Pressure

psi ↔ kPa ↔ Bar

Liquids (again)

fl. oz. ↔ ml

Freedom units, begone!Convert American oddities to proper SI units