Convert Square Miles to Square Kilometers
1 square mile = 2.589988 square kilometers. Type any value below to convert in either direction — the calculation happens in your browser.
Square Miles to Square Kilometers formula
Multiply the number of square miles by 2.589988 to get square kilometers.
square kilometers = square miles × 2.589988To go the other way: divide the number of square kilometers by 2.589988, or multiply by 0.3861022.
square miles = square kilometers ÷ 2.589988Square Miles to Square Kilometers conversion table
| Square Miles | Square Kilometers |
|---|---|
| 1 mi² | 2.589988 km² |
| 2 mi² | 5.179976 km² |
| 3 mi² | 7.769964 km² |
| 4 mi² | 10.359952 km² |
| 5 mi² | 12.949941 km² |
| 6 mi² | 15.539929 km² |
| 7 mi² | 18.129917 km² |
| 8 mi² | 20.719905 km² |
| 9 mi² | 23.309893 km² |
| 10 mi² | 25.899881 km² |
| 15 mi² | 38.849822 km² |
| 20 mi² | 51.799762 km² |
| 25 mi² | 64.749703 km² |
| 30 mi² | 77.699643 km² |
| 40 mi² | 103.599524 km² |
| 50 mi² | 129.499406 km² |
| 75 mi² | 194.249108 km² |
| 100 mi² | 258.998811 km² |
| 250 mi² | 647.497028 km² |
| 500 mi² | 1,294.994 km² |
| 1,000 mi² | 2,589.988 km² |
Square Kilometers to Square Miles conversion table
| Square Kilometers | Square Miles |
|---|---|
| 1 km² | 0.3861022 mi² |
| 2 km² | 0.7722043 mi² |
| 3 km² | 1.158306 mi² |
| 4 km² | 1.544409 mi² |
| 5 km² | 1.930511 mi² |
| 6 km² | 2.316613 mi² |
| 7 km² | 2.702715 mi² |
| 8 km² | 3.088817 mi² |
| 9 km² | 3.474919 mi² |
| 10 km² | 3.861022 mi² |
About the square mile
A square mile is about 2.59 square kilometres and is used for US counties, states and land surveys.
About the square kilometer
A square kilometre is one million square metres and is used for the area of cities and regions.
Frequently asked questions
How many square kilometers are in a square mile?
There are 2.589988 square kilometers in one square mile.
How many square miles are in a square kilometer?
There are 0.3861022 square miles in one square kilometer.
Is this conversion exact?
The ratio between the square mile and the square kilometer is fixed by definition, so the conversion is exact — the figures shown here are rounded for readability only.
What is 10 square miles in square kilometers?
10 square miles equals 25.899881 square kilometers.
Related area conversions
- Square Meters to Square Kilometers
- Square Centimeters to Square Kilometers
- Square Miles to Square Meters
- Square Miles to Square Centimeters
- Square Miles to Square Yards
- Square Miles to Square Feet
- Square Miles to Square Inches
- Square Miles to Acres
- Square Miles to Hectares
- Square Yards to Square Kilometers
- Square Feet to Square Kilometers
- Square Inches to Square Kilometers
- Acres to Square Kilometers
- Hectares to Square Kilometers