Full name: kilometre
Plural form: kilometres
Symbol: km
Alternate spelling: kilometers
Category type: length
Scale factor: 1000
The SI base unit for length is the metre.
1 metre is equal to 0.001 kilometer.
Valid units must be of the length type.
You can use this form to select from known units:
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.
kilometer to light day
kilometer to toise
kilometer to attometre
kilometer to decametre
kilometer to football field [U.S.]
kilometer to palmo [Texas]
kilometer to caliber
kilometer to inch
kilometer to lug [great]
kilometer to lap [olympic pool]