Convert square kilometres (km²) to square miles (mi²).
Edit either value. Decimals and scientific notation supported.
No units found. Try a name or symbol.
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1 km² ≈ 0.3861021585 mi²
Precision changes displayed rounding, not calculation accuracy.
mi² = km² × 0.386102158542446mi² = km² × 0.386102158542446
Multiply the km² reading by 0.386102158542446.
1 km² ≈ 0.3861021585 mi²
1 × 0.386102158542446 ≈ 0.3861021585
100 km² ≈ 38.61021585 mi²
100 × 0.386102158542446 ≈ 38.61021585
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 kilometre to Square mile
Reference values use this page’s named pair and default context. Calculator precision and font settings do not change this table.
| Square kilometre (km²) | Square mile (mi²) |
|---|---|
| 0 | 0 |
| 0.1 | 0.03861021585 |
| 0.5 | 0.1930510793 |
| 1 | 0.3861021585 |
| 2 | 0.7722043171 |
| 5 | 1.930510793 |
| 10 | 3.861021585 |
| 25 | 9.652553964 |
| 50 | 19.30510793 |
| 100 | 38.61021585 |
| 1000 | 386.1021585 |
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