Converters
Length Converter
Convert between mm, cm, meters, km, inches, feet, yards and miles — with every unit shown at once.
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All conversions
About this tool
Convert any length instantly between metric and imperial: millimeters, centimeters, meters, kilometers, inches, feet, yards and miles. Enter one value and see not just your target unit but the full conversion table across every unit — no re-entering for each pair.
Common anchors: 1 inch = 2.54 cm exactly, 1 m ≈ 3.28 ft, 1 km ≈ 0.62 mi.
How to use
- Enter a value and pick the unit it is in.
- Pick the unit you want (or use ⇄ to swap).
- Read the big result — plus the value in every other unit below.
Frequently asked questions
Exactly 2.54 cm — the inch has been defined in metric terms since 1959.
Multiply by 3.28084. The converter does it precisely; 1.75 m is about 5.74 ft.
Yes — 1 mile = 1.609 km, so miles are roughly 60% longer.