Length Converter
Convert between millimetres, centimetres, metres, kilometres, inches, feet, yards and miles in one step.
- Centimetres
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- Kilometres
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- Inches
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- Feet
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- Yards
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- Miles
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What is the Length Converter?
This length converter turns a value in one unit into millimetres, centimetres, metres, kilometres, inches, feet, yards and miles at once. It uses exact definitions such as 1 inch equals 2.54 centimetres and 1 mile equals 1.609344 kilometres. Pick the starting unit and read all results.
How it works
The value is first converted to metres using exact factors: 1 inch is 0.0254 m, 1 foot is 0.3048 m, 1 yard is 0.9144 m and 1 mile is 1609.344 m. The result is then divided by the target unit factor to give each answer.
How to use it
- Type the value you want to convert.
- Choose the unit it is currently in.
- Read every converted unit in the results.
- Change the number or unit to convert again.
Length Converter — FAQ
How many centimetres are in an inch?
Exactly 2.54 centimetres. This is the international definition, so converting between inches and centimetres is exact.
How many feet are in a mile?
There are 5,280 feet in a mile. Enter 1 and choose Miles to see this along with every other unit.
Can I convert from a small unit to a large one?
Yes. Choose any starting unit and the tool shows all eight units, so you can go from millimetres to miles or the reverse.