Please provide values below to convert Square Mile [mi²] to Square Kilometer [km²], or vice versa.
1 Square Mile (mi²) = 2.58998811 Square Kilometer (km²)
1 Square Kilometer (km²) = 0.3861021586 Square Mile (mi²)
Example: convert 15 Square Mile (mi²) to Square Kilometer (km²):
15 Square Mile (mi²) = 15 × 2.58998811 Square Kilometer (km²) = 38.84982165 Square Kilometer (km²)
A square mile equals 2,589,988 square meters. Used in the United States for large land areas.
| Square Mile [mi²] | Square Kilometer [km²] |
|---|---|
| 1 mi² | 2.58998811 km² |
| 2 mi² | 5.17997622 km² |
| 5 mi² | 12.94994055 km² |
| 10 mi² | 25.8998811 km² |
| 20 mi² | 51.7997622 km² |
| 50 mi² | 129.4994055 km² |
| 100 mi² | 258.998811 km² |
| 200 mi² | 517.997622 km² |
| 500 mi² | 1,294.994055 km² |
| 1000 mi² | 2,589.98811 km² |
Enter the input value, choose source and target units, and read the converted result shown instantly.
Converted Value = Input Value × (From Unit Factor / To Unit Factor). For non-linear domains, category-specific standard formulas are applied.
If 1 source unit equals 1000 target units, then 2 source units equal 2000 target units. Use the live converter above for exact values.
Q: Is this conversion accurate?
A: Yes, it uses fixed reference factors or tested standard formulas.
Q: Can I reverse the conversion?
A: Yes, swap the units or use the reverse conversion direction.