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... Square mile = ... Square kilometer
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Square mile to Square kilometer Converter
Use this page to convert square mile values into square kilometer, with background details, formulas, a worked example, and a quick conversion table.
Conversion formula
1 sq mi = 2.589988110336 sq km
1 sq km = 0.386102158542446 sq mi
Example: 12 sq mi = 31.079857324032 sq km
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Square mile
A square mile is the area of a square with side length one mile.
History: It follows from the mile as a long-distance customary unit.
Current use: Square miles are used for city, county, state, and regional land areas.
Also written as sq mi, mi2, sqmi, square miles.
Square kilometer
A square kilometer equals one million square meters.
History: It is the large-area metric extension of the square meter.
Current use: Square kilometers are used for land area, maps, and regional statistics.
Also written as sq km, km2, sqkm, square kilometers, square kilometre, square kilometres.
Square mile to Square kilometer table
| Square mile [sq mi] | Square kilometer [sq km] |
|---|---|
| 0.01 sq mi | 0.02589988110336 sq km |
| 0.1 sq mi | 0.2589988110336 sq km |
| 1 sq mi | 2.589988110336 sq km |
| 2 sq mi | 5.179976220672 sq km |
| 5 sq mi | 12.94994055168 sq km |
| 10 sq mi | 25.89988110336 sq km |
| 20 sq mi | 51.79976220672 sq km |
| 50 sq mi | 129.4994055168 sq km |
| 100 sq mi | 258.9988110336 sq km |
Frequently asked questions
How many Square kilometer (sq km) are in one Square mile (sq mi)?
One Square mile equals 2.589988110336 Square kilometer.
How do you convert Square mile to Square kilometer?
Multiply the Square mile value by 2.589988110336 to get the result in Square kilometer.
How do you convert Square kilometer back to Square mile?
Multiply the Square kilometer value by 0.386102158542446 to get back to Square mile.
What is 12 Square mile in Square kilometer?
12 Square mile equals 31.079857324032 Square kilometer.