Square mile
Unit of area
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The square mile is an imperial and US unit of measure for area. One square mile is equal to the area of a square with each side measuring a length of one mile. Wikipedia
Notation: mi2
1 mi2 in: is equal to
Imperial/US: 4.0145×109 sq in; 2.7878×107 sq ft; 3.0976×106 sq yd; 640 acres
SI units: 2.59×106 m2; 2.59 km2
Unit of: area
Unit system: Imperial, United States customary units