Square Mile to Square Kilometer (mi² to km²)
Convert mi² to km² — Area converter
Also written as mi2 to km2.
One square mile equals 2.589988 km², so to convert square miles to square kilometers you multiply the value by 2.589988. A square mile is larger than a square kilometer — going the other way, 1 km² = 0.38610216 mi². For example, 10 mi² = 25.899881 km² and 50 mi² = 129.499406 km².
1 mi² = 2.589988 km²
Square Mile to Square Kilometer formula
1 Square Mile = 2.589988 km²
Worked examples
- 25 mi² = 64.749703 km²
- 100 mi² = 258.998811 km²
Square Mile to Square Kilometer conversion table
| Square Mile (mi²) | Square Kilometer (km²) |
|---|---|
| 1 | 2.589988 |
| 2 | 5.179976 |
| 3 | 7.769964 |
| 5 | 12.949941 |
| 8 | 20.719905 |
| 10 | 25.899881 |
| 12 | 31.079857 |
| 15 | 38.849822 |
| 20 | 51.799762 |
| 25 | 64.749703 |
| 50 | 129.499406 |
| 100 | 258.998811 |
| 250 | 647.497028 |
| 500 | 1294.99 |
| 1000 | 2589.99 |
Frequently asked questions
How many square kilometers are in one square mile?
One square mile equals 2.589988 square kilometers (km²).
How many square miles are in one square kilometer?
One square kilometer equals 0.38610216 square miles (mi²).
How do you convert square miles to square kilometers?
1 Square Mile = 2.589988 km². Use the calculator above for any value.
What is 5 mi² in km²?
5 mi² = 12.949941 km².
What is 100 mi² in km²?
100 mi² = 258.998811 km².
What is 10 mi² in km²?
10 mi² = 25.899881 km².
What is 20 mi² in km²?
20 mi² = 51.799762 km².
Is a square mile bigger than a square kilometer?
Yes. A square mile is larger — one square mile equals 2.589988 square kilometers (km²).