| square mile | |
|---|---|
 Various units of area, with square mile being represented as a yellow square | |
| General information | |
| Unit system | Imperial, United States customary units |
| Unit of | area |
| Symbol | mi2, sq mi |
| Conversions | |
| 1 mi2in ... | ... is equal to ... |
| Imperial/US |
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| SI units |
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Thesquare mile (abbreviated assq mi and sometimes asmi2)[1] is animperial andUS unit of measure forarea. One square mile is equal to the area of asquare with each side measuring a length of onemile.[2]
One square mile is equal to:
One square mile is also equivalent to:
Square miles should not be confused with miles square, a square region with each side having a length of the value given. For example, a region which is 20 miles square (20 miles ×20 miles) has an area of400 sq mi; a rectangle of measuring10 miles ×40 miles also has an area of400 sq mi, but is not 20 miles square.
In the United StatesPublic Land Survey System, "square mile" is an informal synonym forsection.
