Length Conversion Calculator Convert between metric and imperial units — meters, inches, miles, and more — instantly. From Kilometre (km) Metre (m) Centimetre (cm) Millimetre (mm) Micrometre (μm) Nanometre (nm) Mile (mi) Yard (yd) Foot (ft) Inch (in) Nautical mile (nmi) = To Kilometre (km) Metre (m) Centimetre (cm) Millimetre (mm) Micrometre (μm) Nanometre (nm) Mile (mi) Yard (yd) Foot (ft) Inch (in) Nautical mile (nmi)