How to use it
- Choose the category: length, weight, temperature, volume, area or speed.
- Type the value and pick the unit you have and the unit you need.
- Read the result, copy it, or check the list with all the other units.
Questions and answers
Are the conversions exact?
Yes. The converter uses the legal definitions: 1 inch = 2.54 cm, 1 pound = 0.45359237 kg, 1 US gallon = 3.785411784 liters, 1 mile = 1,609.344 m. Results are shown with up to 7 significant digits.
Are gallons, cups and ounces US or British?
They are US customary units, the ones used in American recipes and fuel prices. The British (imperial) gallon is bigger: 4.546 liters instead of 3.785.
What is a stone?
A unit of body weight used in the UK and Ireland: 1 stone = 14 pounds = 6.35 kg. If you convert to stone, the result is also shown as stone and pounds.