The square mile (abbreviated as sq mi and sometimes as mi2)[2] 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.[3]
| square mile | |
|---|---|
_(cropped).png) | |
| 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 |
|
| SI units |
|
Equivalents
edit
One square mile is equal to:
- about four billion square inches[4]
- nearly 27.9 million square feet
- nearly 3.1 million square yards
- 2,560 roods
- 640 acres
One square mile is also equivalent to:
- nearly 2.59 million square meters
- nearly 25.9 billion square centimeters
- nearly 2.59 trillion square millimeters
Similarly named units
editMiles square
editSquare 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 of 400 mi2; a rectangle of measuring 10 miles × 40 miles also has an area of 400 mi2, but is not 20 miles square.
Section
editIn the United States Public Land Survey System, "square mile" is an informal synonym for section.
References
edit- ↑ FAA Airport Form 5010 for MDW PDF. effective February 19, 2026.
- ↑ 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.
- ↑ Davies, Charles (1872). Mathematical dictionary and cyclopedia of mathematical science. Original from Harvard University: A.S. Barnes and co. p. 582.
- ↑ François Cardarelli (2003). Encyclopaedia of scientific units, weights, and measures: their SI equivalences and origins. Springer. p. 3. ISBN 978-1-85233-682-0. Retrieved 22 February 2012.