Square mile

square mile
Midway International Airport is about 650 acres (1.02 mi2) in area.
General information
Unit systemImperial, United States customary units
Unit ofarea
Symbolmi2, sq mi
Conversions
1 mi2 in ...... is equal to ...
   Imperial/US   
  • 4.0145×109 sq in
  • 2.7878×107 ft2
  • 3.0976×106 yd2
  • 640 acres
   SI units   
  • 2589988.110336 m2
  • 2.589988110336 km2

The square mile (abbreviated as sq mi and sometimes as mi2) 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.

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