The square mile (abbreviated as sq mi and sometimes as mi2)Rowlett, Russ (September 1, 2004)

University of North Carolina at Chapel Hill The University of North Carolina at Chapel Hill (UNC, UNC-Chapel Hill, North Carolina, Chapel Hill, or simply Carolina) is a in . The of the system, it is considered a , or a public institution which offers an academic experience similar to ...
. Retrieved February 22, 2012.
is an
imperial Imperial is that which relates to an empire, emperor, or imperialism. Imperial or The Imperial may also refer to: Places United States * Imperial, California * Imperial, Missouri * Imperial, Nebraska * Imperial, Pennsylvania * Imperial, Texas * ...
and US unit of measure for area. One square mile is an
area Area is the quantity Quantity is a property that can exist as a multitude or magnitude, which illustrate discontinuity and continuity. Quantities can be compared in terms of "more", "less", or "equal", or by assigning a numerical value in ...

equal to the area of a
square In Euclidean geometry, a square is a regular The term regular can mean normal or in accordance with rules. It may refer to: People * Moses Regular (born 1971), America football player Arts, entertainment, and media Music * Regular (Badfinger ...

with sides of length one
mile The mile, sometimes the international mile or statute mile to distinguish it from other miles, is a British imperial unit and US customary unit United States customary units (U.S. customary units) are a system of measurements commonly u ...


One square mile is equal to: *4,014,489,600 square inches * * * * One square mile is also equivalent to: * * *

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.


In the United States
Public Land Survey System The Public Land Survey System (PLSS) is the surveying method developed and used in the United States to plat, or divide, real property for sale and settling. Also known as the Rectangular Survey System, it was created by the Land Ordinance of 1785 ...

Public Land Survey System
, "square mile" is an informal synonym for
section Section, Sectioning or Sectioned may refer to: Arts, entertainment and media * Section (music), a complete, but not independent, musical idea * Section (typography), a subdivision, especially of a chapter, in books and documents ** Section sign ...


Formula Conversion, Square miles to numerous area units with algebraic steps and unit cancellation shown
{{DEFAULTSORT:Square Mile Units of area Customary units of measurement in the United States Imperial units