Square mile explained

square mile
Standard:	Imperial, United States customary units
Quantity:	area
Symbol:	mi^2
Symbol2:	sq mi
Units1:	Imperial/US
Units2:	SI units

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]

Equivalents

One square mile is equal to:

• 4,014,489,600 square inches^[3]
• 1mi2
• 1mi2
• 1mi2
• 1mi2

One square mile is also equivalent to:

• 1mi2
• 1mi2
• 1mi2

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 (×) has an area of ; a rectangle of measuring × also has an area of, 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

Notes and References

1. 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.
2. Book: Davies , Charles . Mathematical dictionary and cyclopedia of mathematical science. 1872. A.S. Barnes and co. Original from Harvard University. 582.
3. Book: François Cardarelli. Encyclopaedia of scientific units, weights, and measures: their SI equivalences and origins. Springer. 2003. 978-1-85233-682-0. 3. 22 February 2012. registration.