Unit converter
Type a number on either side and the other follows. Weight, length, temperature, volume, data size and time.
Every pair
Common conversions
Each has its own page with the answer, the formula, a worked example and a table.
Units
Questions
Yes. They use the exact definitions: 1 lb = 0.45359237 kg, 1 in = 2.54 cm, 1 US gallon = 3.785411784 L. Answers are shown to six significant figures.
US customary: 1 US gallon is 3.785 liters and 1 US cup is 236.6 ml. The unit calculator also knows imperial gallons and pints.
1 GB is 1,000 MB, the SI meaning that drive makers and most apps use. 1 GiB is 1,024 MiB, the binary meaning Windows shows as GB.