Length Converter
Free online length converter — convert between Millimetre, Centimetre, Metre, Kilometre and more, instantly in your browser.
All conversions
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How this length converter works
Type a value, pick the unit you have and the unit you want — the result updates instantly, along with a full table converting your value into every supported length unit. All math runs locally in your browser, so it works offline once loaded and nothing you enter is sent anywhere.
Supported units
- Millimetre (mm)
- Centimetre (cm)
- Metre (m)
- Kilometre (km)
- Inch (in)
- Foot (ft)
- Yard (yd)
- Mile (mi)
- Nautical mile
Frequently asked questions
How do I convert Millimetre to Centimetre?
Enter your value, pick Millimetre as “From” and Centimetre as “To” — the result updates as you type. 1 Millimetre = 0.1 Centimetre.
Which length units does this converter support?
9 units: Millimetre, Centimetre, Metre, Kilometre, Inch, Foot, Yard, Mile, Nautical mile. The table below the converter shows your value in every unit at once.
Is this length converter free and private?
Yes — it is completely free, needs no sign-up, and all conversion happens locally in your browser. Nothing you enter is uploaded or stored.