how much m is km
The kilometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: km; /ËkÉªlÉmiËtÉr/ or /kÉªËlÉmÉªtÉr/) or kilometer (American spelling) is a unit of length in the metric system, equal to one thousand metres (kilo- being the SI prefix for 7003100000000000000â 1000).