Square kilometre (original) (raw)
Square kilometre (symbol km�) is an SI unit of surface area. It is one of the SI derived units.
1 km� is equal to:
- the area of a square measuring 1 kilometre on each side
- 1 000 000 m�
- 100 hectares
- 0.386 102 square miles (statute)
- 247.105 381 acres
Conversely:
- 1 m� = 0.000 001 km�
- 1 hectare = 0.01 km�
- 1 square mile = 2.589 988 km�
- 1 acre = 0.004 047 km�
The 1 E6 m� orders of magnitude page gives comparisons with geographic areas. See also Conversion of units.