how big is a km
Quick Answer. A kilometer is equal to 1,000 meters or 0.62137 miles. This is the primary measure of large distances throughout most of the world, though the United States still uses the mile as its standard.
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).