# Kilometre

A

**kilometre** (

American spelling: kilometer) (abreviation:

**km**) is a

unit of

length equal to 1000

metres. It is approximately equal to 0.621

miles, 1 094 yards or 3 281

feet.

See 1 E3 m to compare the length of a kilometre.

See also: SI, metre, SI prefix, Orders of magnitude, light year, parsec