Length Converter
Free online length converter — convert between Millimetre, Centimetre, Metre, Kilometre and more, instantly in your browser.
All conversions
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Runs entirely in your browser — nothing you enter is uploaded or stored.
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.
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 shows your value in every unit at once.
Is this length converter free and private?
Yes — completely free, no sign-up, and all conversion happens locally in your browser. Nothing you enter is uploaded or stored.