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 km.
Valid units must be of the length type.
You can use this form to select from known units:
I'm feeling lucky, show me some random 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.
Support this site
If this page was helpful, please
donate a small amount
or advertise
on the site. If you are a regular visitor, you might prefer to
remove most ads.
You can also contact us
if you have any comments or suggestions.