Unit Converter

Eight unit families, converted instantly.

How to use the unit converter

Choose a category such as length, weight or data storage.
Pick the unit you are converting from and the unit you want.
Type a value and read the converted result instantly, or swap the units with one click.

Value in base unit = value x factor
Result = value in base unit / target factor

Every unit in a category is defined against one base unit. Temperature is handled separately because it needs offsets, not just factors.

Converting 10 kilometres to miles.

10 km is 6.21371 miles.

Which categories are supported?

Length, weight, temperature, area, volume, speed, time and data storage.

Does it use metric or binary data units?

Both. Kilobytes use 1,000 bytes and kibibytes use 1,024, listed as separate units so the result is unambiguous.

How precise are the results?

Conversions use standard exact factors where they exist, and results are shown to a sensible number of significant figures.

HEX, RGB and HSL, always in sync.

Simplify, scale or solve any ratio.

Your BMI, category and healthy weight range.

Mean, median, mode and more from any list of numbers.