Square kilometre
From Wikipedia, the free encyclopedia
Square kilometre (U.S. spelling: square kilometer), symbol km2, is a decimal multiple of the SI unit of surface area, the square metre, one of the SI derived units. 1 km2 is equal to:
- 1,000,000 m2
- 100 ha (hectare)
- 0.386102 square miles
- 247.105381 acres
Conversely:
- 1 m2 = 0.000 001 (10−6) km2
- 1 hectare = 0.01 (10−2) km2
- 1 square mile = 2.589 988 km2
- 1 acre = 0.004 047 km2, 0.404 7 ha or 4047 m2
Note: "km2" means (km)2, square kilometre or kilometre squared, and not k(m2), kilo–square metre. For example, 3 km2 is equal to 3 × (1,000 m)2 = 3,000,000 m2, not 3,000 m2.
[edit] Comparative order
The 106 m2 orders of magnitude page gives comparisons with geographic areas.
A hectare (104 m2) is less than a square kilometer which is less than a square megametre (1012 m2).
[edit] Source
- "Conversion Factors". MINFILE Coding Manual. Ministry of Energy, Mines and Petroleum Resources. Government of British Columbia. Retrieved on 2007-10-13.
[edit] See also
|
|
This standards- or measurement-related article is a stub. You can help Wikipedia by expanding it. |