Convert square miles (mi²) to square kilometres (km²).
Edit either value. Decimals and scientific notation supported.
No units found. Try a name or symbol.
No units found. Try a name or symbol.
1 mi² ≈ 2.58998811 km²
Precision changes displayed rounding, not calculation accuracy.
km² = mi² × 2.589988110336km² = mi² × 2.589988110336
Multiply the mi² reading by 2.589988110336.
1 mi² ≈ 2.58998811 km²
1 × 2.589988110336 ≈ 2.58998811
2 mi² ≈ 5.179976221 km²
2 × 2.589988110336 ≈ 5.179976221
Area factors scale with the square of the length factor. For example, 1 ft = 0.3048 m gives 1 ft² = 0.3048² m² = 0.09290304 m².
Fixed reference · Square mile to Square kilometre
Reference values use this page’s named pair and default context. Calculator precision and font settings do not change this table.
| Square mile (mi²) | Square kilometre (km²) |
|---|---|
| 0 | 0 |
| 0.1 | 0.258998811 |
| 0.5 | 1.294994055 |
| 1 | 2.58998811 |
| 2 | 5.179976221 |
| 5 | 12.94994055 |
| 10 | 25.8998811 |
| 25 | 64.74970276 |
| 50 | 129.4994055 |
| 100 | 258.998811 |
| 1000 | 2589.98811 |
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