METRONMETHOD. REASON. LEARN.
Interactive tool

Unit converter

Convert lengths, masses, volumes and speeds. Choose units of the same type.

Your experiment

Change any value to update the result. Use the stated units.

What the numbers tell us

Enable JavaScript to calculate with your own values.

Why it works

new value = value × source factor / destination factor

Assumptions and limits

Only units of the same physical dimension can be converted. Litres measure volume, not mass.

Try a small challenge

Convert 2.5 km to metres.
A little hint

Multiply by 1,000.

Understand the idea: Metric units and conversion →