Unit Converter
Convert lengths, masses, temperatures, volumes, areas, speeds, data, durations and energies.
Processed in your browserFree
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About this tool
A converter for everyday and professional units: meters and miles, kilos and pounds, Celsius and Fahrenheit, liters and gallons, hectares and acres, km/h and knots, megabytes and gibibytes, hours and weeks, kilowatt-hours and kilocalories. The result is shown in every unit of the quantity at once.
How to use this tool
- 1Choose the quantity (length, mass, etc.).
- 2Enter the value and the source and target units.
- 3Read the result and the table of every unit.
Limits to know
- Common units of measurement; historical or regional units (league, bushel, etc.) are not included.
- US volumes (gallon, cup): British imperial units differ slightly.
- Precision limited to 10 significant digits.
- Files
- No file to import: everything happens on the page.
Privacy and file processing
Calculations run instantly in your browser; nothing you enter is transmitted or stored.
Read our privacy policyFrequently asked questions
A gigabyte (GB) is 10⁹ bytes; a gibibyte (GiB) is 2³⁰ = 1,073,741,824 bytes. Disk manufacturers count in GB, operating systems often in GiB: hence the 931 "GB" shown for a 1 TB drive.