Square mile

The square mile (abbreviated as sq mi and sometimes as mi²)<ref name="RussRowlett">Rowlett, Russ (September 1, 2004). "S", How Many? A Dictionary of Units of Measurement. University of North Carolina at Chapel Hill. Retrieved February 22, 2012.</ref> 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.<ref Name="Davies">Template:Cite book</ref>

Equivalents

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Various units of area, with square mile being represented as a yellow square

One square mile is equal to:

• 4,014,489,600 square inches<ref name="Cardarelli20032">Template:Cite book</ref>
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One square mile is also equivalent to:

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Similarly named units

Miles square

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 (Template:Val × Template:Val) has an area of Template:Val; a rectangle of measuring Template:Val × Template:Val also has an area of Template:Val, but is not 20 miles square.

Section

In the United States Public Land Survey System, "square mile" is an informal synonym for section.

References

• Formula Conversion, Square miles to numerous area units with algebraic steps and unit cancellation shown