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Square kilometre

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.

External link

Conversion Calculator for Units of AREA (http://www.ex.ac.uk/cimt/dictunit/ccarea.htm)

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