Square mile

The square mile (sometimes written as mi²) is an imperial and US unit of measure for an area equal to the area of a square of one statute mile. It should not be confused with miles square, which refers to the number of miles on each side squared. For instance, 20 miles square (20×20 miles) is equal to 400 square miles.

1 square mile	= 640 acres
	= 27,878,400 square feet
	= 2.589988110336 square kilometres (exactly)
	≈ 260 hectares

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
• 2560 roods
• 25,899,881,103.36 square centimetres
• 2,589,988.110336 square metres
• 2.589988110336 square kilometres

North American land surveys

This section may be confusing or unclear. Please help clarify the article. Suggestions may be on the talk page. (April 2009)

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.

References

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