Convert square miles to square kilometers
Enter a square miles value below and convert to square kilometers
mi²
1 square mile ≈
2.59 square kilometers
* rounded result
Select how many decimal places the result will be rounded to:
How to convert square miles to square kilometers
To convert square miles to square kilometers, multiply a square miles value by 2.589988110336.
Formula km² = mi² × 2.589988110336
Example: Convert 1000 square miles to square kilometers Calculations: 1000 mi² × 2.589988110336 ≈ 2589.988 km²
Square mile (mi²)
The square mile is the imperial and US customary systems unit of area, defined as the area of a square with sides of 1 mile. It is approximately equal to 2.59 square kilometers.
Square kilometer (km²)
The square kilometer is a unit of area in the metric system, defined as the area of a square with sides of 1 kilometer. It is approximately equal to 0.3861 square miles.