Length converter
Enter a plain decimal number and choose both length units.
Convert common metric and imperial length units.
About this tool
The length converter changes distances between millimetres, centimetres, metres, kilometres, inches, feet, yards, miles, and nautical miles. Use it to read product dimensions, compare travel distances, or adapt building measurements between metric and imperial units. Enter a decimal value, choose the source and target units, and convert. The clear unit labels help prevent common mistakes when feet, metres, miles, and kilometres appear in the same task.