The square mile (abbreviated as sq mi and sometimes as mi2)[1] 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.[2]
square mile | |
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General information | |
Unit system | Imperial, United States customary units |
Unit of | area |
Symbol | mi2, sq mi |
Conversions | |
1 mi2 in ... | ... is equal to ... |
Imperial/US |
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SI units |
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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 mi × 20 mi) has an area of 400 sq mi; a rectangle of measuring 10 mi × 40 mi also has an area of 400 sq mi, but is not 20 miles square.
In the United States Public Land Survey System, "square mile" is an informal synonym for section.