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Length Converter

Convert cm to inches, feet to metres, km to miles and every other length unit.

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How to use the Length Converter

  1. 1

    Enter a value.

  2. 2

    Choose the unit to convert from and to.

  3. 3

    Read the result or compare all units in the table.

Frequently asked questions

How many centimetres are in an inch?

Exactly 2.54 cm. One foot is 30.48 cm and one mile is 1.609344 km.

How precise is it?

Conversions use exact, internationally defined factors and show up to 10 significant digits.