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To convert Square Mile to Square Kilometer: multiply by 2.58999. 1 mi² × 2.58999 = 2.58999 km²
| Square Mile (mi²) | Square Kilometer (km²) |
|---|---|
| 0.1 mi² | 0.258999 km² |
| 0.25 mi² | 0.647497 km² |
| 0.5 mi² | 1.29499 km² |
| 1 mi² | 2.58999 km² |
| 2 mi² | 5.17998 km² |
| 5 mi² | 12.9499 km² |
| 10 mi² | 25.8999 km² |
| 20 mi² | 51.7998 km² |
| 25 mi² | 64.7497 km² |
| 50 mi² | 129.499 km² |
| 100 mi² | 258.999 km² |
| 250 mi² | 647.497 km² |
| 500 mi² | 1294.99 km² |
| 1,000 mi² | 2589.99 km² |
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To convert Square Mile to Square Kilometer, use our free online converter above. Simply enter the value in Square Mile and instantly get the result in Square Kilometer.
1 Square Mile equals 2.58999 Square Kilometer. You can use the converter above to calculate any value.
Use our converter for the exact formula. The result is displayed with the full conversion formula for reference.
Yes! Our converter is completely free to use. No sign-up, no download required. Just enter your value and get an instant result.
The Square Mile (mi²) and Square Kilometer (km²) are both units of area. Our converter uses the precise conversion factor to give you accurate results instantly.
1 Square Mile = 2.58999 Square Kilometer
This area converter supports bidirectional conversion — use the swap button to convert Square Kilometer back to Square Mile. You can also adjust the decimal precision using the controls below the result.