Unit Converter

Convert between units of length, weight, temperature, area, volume, speed, data, time, pressure and energy. Pick what you are measuring, type a value, and see the answer in your chosen unit plus every other unit of the same kind at once.

1. Choose what you are converting — Length, Weight, Temperature and so on.
2. Type the value you have.
3. Pick the unit you are converting from and the unit you want.
4. Read the result, or scan the table below it for every other unit.
5. Use the swap button to reverse the conversion, and Copy result to paste the number elsewhere.

• Factors use exact legal definitions where they exist — the international inch, pound and US gallon — and decimal arithmetic, so results are exact to 10 significant figures.
• A “year” is 365 days. Months are not offered because their length varies.
• Data units show both decimal (kB, MB, GB — powers of 1,000, used by drive makers) and binary (KiB, MiB, GiB — powers of 1,024, used by many operating systems).
• Traditional land units such as bigha, guntha and kanal differ from state to state, so they are not included. A cent is 1/100 of an acre and a gaj is a square yard.
• A tola is 11.6638038 grams, the standard used for gold.
• Every conversion happens in your browser. Nothing you type is sent anywhere, and the tool works with no internet connection.

The drive is sold as 1,000,000,000,000 bytes (decimal). Operating systems that count in powers of 1,024 show that as about 931 GiB, often labelled “GB”.

No. A food Calorie on a nutrition label is a kilocalorie — 1,000 small calories, or 4.184 kilojoules.

Exactly 43,560 square feet, or about 4,046.86 square metres.

A US gallon is 3.785 litres; a UK (imperial) gallon is 4.546 litres — about 20% larger.