Unit Converter

Convert between common units.

FREE TO USENO SIGN-UP REQUIREDBROWSER-BASED

How to convert units

01 / STEPS

01Pick a category — Choose Length, Weight or Temperature from the CATEGORY menu.
02Enter and choose units — Type a value, then select the unit it is in (FROM) and the unit you want (TO).
03Copy or swap — Read the result on the right, click [ COPY ] to copy it, or [ SWAP ] to flip the two units.

›

02 / FEATURES

Kilometre, metre, centimetre, millimetre, mile, yard, foot and inch.

Tonne, kilogram, gram, milligram, pound and ounce.

Celsius, Fahrenheit and Kelvin, bridged through Celsius internally.

›

03 / FAQ

How does temperature conversion work?

Celsius is used as the bridge: the input is first turned into °C, then into the target unit. That keeps the three scales consistent.

Why are results shown with many decimals?

Some conversions do not land on round numbers. The value is shown precisely; round it for everyday use.

Can I convert volume or speed?

This tool covers length, weight and temperature. Volume and speed would be added as separate categories.

What does SWAP do?

It exchanges the FROM and TO units so you can reverse a conversion without re-selecting them.

›

04 / RELATED