How to convert square miles to square kilometers
One square mile is 2.58999 square kilometers. To convert square miles to square kilometers, multiply the number of square miles by 2.58999.
Square kilometers = square miles × 2.58999
For example, 5 square miles is 12.9499 square kilometers.
Square miles to square kilometers conversion table
| Square miles | Square kilometers |
|---|---|
| 0.5 | 1.29499 |
| 1 | 2.58999 |
| 2 | 5.17998 |
| 5 | 12.9499 |
| 10 | 25.8999 |
| 100 | 258.999 |
About these units
Square miles measure cities, counties and large tracts of land. One square mile is 640 acres.
Square kilometers measure cities, regions and countries in the metric system.
Frequently asked questions
How many square kilometers are in one square mile?
One square mile is 2.58999 square kilometers.
How many square miles are in one square kilometer?
One square kilometer is 0.386102 square miles. Use the square kilometers to square miles converter to go the other way.
Can I convert to other area units?
Yes. The area converter converts between square feet, square meters, square yards, acres, hectares, square miles and square kilometers.