Square miles to Square kilometers Converter
Convert mi² to km² instantly — and see every other area unit at once.
1 mi²=2.59 km²
1 mi² in every unit
Square millimeters
2,589,988,110,000mm²
Square centimeters
25,899,881,100cm²
Square meters
2,589,988.11m²
Square kilometers
2.59km²
Hectares
258.9988ha
Square inches
4,014,489,599.48in²
Square feet
27,878,412ft²
Square yards
3,097,601.33yd²
Acres
640ac
Square milesfrom
1mi²
Common Square miles to Square kilometers conversions
| Square miles (mi²) | Square kilometers (km²) |
|---|---|
| 1 mi² | 2.58999 km² |
| 2 mi² | 5.17998 km² |
| 5 mi² | 12.94994 km² |
| 10 mi² | 25.89988 km² |
| 25 mi² | 64.7497 km² |
| 50 mi² | 129.49941 km² |
| 100 mi² | 258.99881 km² |
| 250 mi² | 647.49703 km² |
| 500 mi² | 1294.99405 km² |
| 1000 mi² | 2589.98811 km² |
The formula
Square miles (mi²) — a unit of area.
Square kilometers (km²) — a unit of area.
Worked examples
1 mi²→2.58999 km²
Apply Square miles × 2.58999 with input = 1. Result: 2.58999 km².
5 mi²→12.94994 km²
Apply Square miles × 2.58999 with input = 5. Result: 12.94994 km².
10 mi²→25.89988 km²
Apply Square miles × 2.58999 with input = 10. Result: 25.89988 km².
FAQ
How do I convert Square miles to Square kilometers?
Use the formula: km² = Square miles × 2.58999. You can also use the converter above — type any value and the result updates instantly.
Where are Square miles used?
Square miles (mi²) — a unit of area.
Where are Square kilometers used?
Square kilometers (km²) — a unit of area.