 For other uses, see Square.
A square mile is an English unit of area equal to that of a square with sides each 1 statute mile (≈1,609 m) in length. It is not a metric unit. The other major Imperial unit / U.S. customary unit of area is the acre, of which there are 640 in a square mile. A square as a geometric shape is described and illustrated at square (geometry). ...
English unit is an American term that refers to a unit in one of a number of systems of units of measurement, some obsolete, and some still in use. ...
Area is a physical quantity expressing the size of a part of a surface. ...
In plane (Euclidean) geometry, a square is a polygon with four equal sides, four right angles, and parallel opposite sides. ...
A mile is a unit of length, usually used to measure distance, in a number of different systems, including English units, Imperial units, United States customary units and Norwegian/Swedish mil. ...
Length is the long dimension of any object. ...
The International System of Units (symbol: SI) (for the French phrase Syst me International dUnit s) is the most widely used system of units. ...
The Imperial units or the Imperial system is a collection of English units, first defined in the Weights and Measures Act of 1824, later refined (until 1959) and reduced. ...
The U.S. customary units (more commonly known in the US as English units or standard units) are the nonmetric units of measurement that are presently used in the United States, in some cases alongside the metric system of units. ...
Area is a physical quantity expressing the size of a part of a surface. ...
An acre is an English unit of area, which is also frequently used in the United States and some Commonwealth countries. ...
Symbols
There is no universally agreed symbol but the following are used:  square mile
 sq mile
 sq mi
 sq m (this can be confused with square metre)
 mile/2
 mi/2
 m/2 (this can be confused with square metre)
 mile^2
 mi^2
 m^2 (this can be confused with square metre)
 mile²
 mi²
 m² (this can be confused with square metre)
Conversions 1 square mile is equivalent to:  4,014,489,600 square inches
 27,878,400 square feet
 3,097,600 square yards
 640 acres
 25,899,881,103.36 square centimetres
 2,589,988.110336 square metres
 2.589988110336 square kilometres
In the Public Land Survey System of the U.S. and the Dominion Land Survey of Canada, the size of a standard section of land is one square mile, but always with the marginally larger survey definition. A square inch is by definition the area enclosed by a square with sides each 1 inch long. ...
A square foot is by definition the area enclosed by a square with sides each 1 foot (unit of length) long. ...
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An acre is an English unit of area, which is also frequently used in the United States and some Commonwealth countries. ...
cm redirects here, alternate uses: cm (disambiguation) A centimetre (symbol cm; American spelling: centimeter) is an SI unit of length. ...
A square metre (US spelling: square meter) is by definition the area enclosed by a square with sides each 1 metre long. ...
Square kilometre (US spelling: Square kilometer), symbol km², is an SI unit of surface area. ...
The Public Land Survey System (PLSS) is a method used in the United States to survey and identify land parcels, particularly for titles and deeds of rural, wild or undeveloped land. ...
United States is the current Good Article Collaboration of the week! Please help to improve this article to the highest of standards. ...
The Dominion Land Survey is the method used to divide most of western Canada into onesquaremile sections for agricultural and other purposes. ...
Sectioning a township. ...
External links  Conversion of square mile in other units
