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Kilometer

Kilometre
Unit system metric
Unit of length
Symbol km 
1 km in ... ... is equal to ...
   SI units    1000 m
   imperial/US units    0.62137 mi
3280.8 ft
   nautical units    0.53996 nmi

The kilometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: km; /ˈkɪləmtər/ or /kɪˈlɒmɪtər/) or kilometer (American spelling) 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 officially for expressing distances between geographical places on land in most of the world; notable exceptions are the United States and the road network of the United Kingdom where the statute mile is the official unit used.

k (pronounced /k/) is occasionally used in some English-speaking countries as an alternative for the word kilometre in colloquial writing and speech. A slang term for the kilometre in the US military is .


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