Length Converter
Convert between metric and imperial units of length and distance instantly.
Convert length and distance units
This free length converter switches instantly between the units people use most — millimetres, centimetres, metres, and kilometres on the metric side, and inches, feet, yards, and miles on the imperial side, plus nautical miles for navigation. Just type a value, choose your units, and the answer updates as you type. Use the swap button to reverse the conversion.
Common length conversions
| From | To | Result |
|---|---|---|
| 1 inch | centimetres | 2.54 cm |
| 1 foot | metres | 0.3048 m |
| 1 metre | feet | 3.281 ft |
| 1 mile | kilometres | 1.609 km |
| 1 kilometre | miles | 0.621 mi |
| 1 yard | metres | 0.9144 m |
Metric vs imperial
Most of the world uses the metric system (millimetres, metres, kilometres), while the United States and, for some everyday uses, the United Kingdom still rely on imperial units (inches, feet, miles). This converter bridges the two, which is handy for travel, DIY projects, schoolwork, and international shopping. For area and volume conversions, see our other unit converters.
Frequently asked questions
How many centimetres are in an inch?
Exactly 2.54 centimetres. This is the internationally agreed definition of an inch.
How do I convert metres to feet?
Multiply the number of metres by 3.281. The converter above does this automatically — just select metres and feet.