📏 Length Converter
cm, inches, feet, meters, miles, km and more
About this calculator
Convert between metric and imperial lengths instantly. Enter a value in millimetres, centimetres, metres, kilometres, inches, feet, yards, or miles and see the equivalents in every other unit. It uses exact conversion factors (1 inch = 2.54 cm by definition), so results are precise, not approximate. Swap direction freely — convert metric to imperial or the reverse from the same input box.
Tip: for quick mental math, 1 metre is about 39 inches — just over a yard — and 1 kilometre is about 0.6 miles.