A kilometre (American spelling: kilometer) (symbol: km) is a unit of length equal to 1000 metres (from the Greek words khilia=thousand and metro=count/measure). It is approximately equal to 0.621 miles, 1094 yards or 3281 feet.

Slang terms for kilometre include "klick" (sometimes spelt "click" or "klik" ) and "kay". All these slang terms can also refer to kilometres per hour.

In unicode, it is represented as ㎞ for use limited to some Oriental syllabaries. A square kilometre is represented as ㎢. A cubic kilometre is represented as ㎦.

hectometre << kilometre << megametre

See also

• 1 E3 m to compare the length of a kilometre
• SI
• SI prefix
• Orders of magnitude
• light year
• parsec

External links

• Conversions of English and American length units to metric units http://www.sengpielaudio.com/ConvLeng.htm
• Length conversions millimetres and micrometres to metres - prefixes http://www.sengpielaudio.com/calculator-millimeter.htm