|1 km in ...||... is equal to ...|
| si units|| 1000 m|
| imperial/us units|| 0.62137 mi|
| nautical units|| 0.53996 nmi|
the kilometre (si symbol: km; / or /), spelt kilometer in american english, is a unit of length in the metric system, equal to one thousand metres (kilo- being the si prefix for 1000). it is now the measurement unit used for expressing distances between geographical places on land in most of the world; notable exceptions are the united states and the united kingdom where the statute mile is the unit used.
the abbreviations k or k (pronounced /) are commonly used to represent kilometre, but are not recommended by the bipm. a slang term for the kilometre in the us and uk militaries is klick.