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Square kilometre
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Square kilometre (symbol km2) is an SI unit of surface area. It is one of the SI derived units.
1 km2 is equal to:
- the area of a square with 1 kilometre on each side
- 1,000,000 m2
- 100 hectares
- 0.386102 square miles (statute)
- 247.105383 acres
Conversely:
- 1 m2 = 0.000001 km2
- 1 hectare = 0.01 km2
- 1 square mile = 2.589988 km2
- 1 acre = 0.004047 km2
The 1 E6 m² orders of magnitude page gives comparisons with geographic areas. See also Conversion of units.
- Conversion Calculator for Units of AREA (http://www.ex.ac.uk/cimt/dictunit/ccarea.htm)
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