About the Unit Converter
One converter for everything: length, weight, volume, area, speed, time and data storage. Pick a type, enter a value and see it converted to every unit at once — no need to convert one pair at a time.
All conversion factors use exact international definitions (for example, 1 inch = 2.54 cm exactly).
How to use the Unit Converter
- Choose what you are converting, for example Length or Volume.
- Enter a value and pick its unit.
- Pick the unit to convert to, or scan the table of all units.
Frequently asked questions
Are US and UK gallons the same?
No. A US gallon is 3.785 litres, while a UK (imperial) gallon is 4.546 litres. Both are listed separately.
Why are there two kinds of kilobyte?
Storage makers use decimal units (1 KB = 1,000 bytes), while operating systems often use binary units (1 KiB = 1,024 bytes). Both are included.