Square mile
- This article is about the unit of measure. For other meanings, see Square mile (disambiguation).
- For other uses, see Square.
A square mile is an English unit of area equal to that of a square with sides each 1 statute mile (≈1,609 m) in length. It is not a metric unit. The other major Imperial unit / U.S. customary unit of area is the acre, of which there are 640 in a square mile.
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Symbols
There is no universally agreed symbol but the following are used:
- square mile
- sq mile
- sq mi
- sq m (this can be confused with square metre)
- mile/-2
- mi/-2
- m/-2 (this can be confused with square metre)
- mile^2
- mi^2
- m^2 (this can be confused with square metre)
- mile²
- mi²
- m² (this can be confused with square metre)
Conversions
1 square mile is equivalent to:
- 4,014,489,600 square inches
- 27,878,400 square feet
- 3,097,600 square yards
- 640 acres
- 25,899,881,103.36 square centimetres
- 2,589,988.110336 square metres
- 2.589988110336 square kilometres
In the Public Land Survey System of the U.S. and the Dominion Land Survey of Canada, the size of a standard section of land is one square mile, but always with the marginally larger survey definition.