1 square kilometer (km²) = 0.3861021585 square miles (mi²). To convert, divide by 2.58998811: mi² = km² ÷ 2.58998811. For example, 5 km² = 1.930510793 mi².
mi² = km² ÷ 2.58998811
Square kilometers to square miles table
| Square kilometers (km²) | Square miles (mi²) |
|---|---|
| 1 | 0.3861021585 |
| 2 | 0.7722043171 |
| 3 | 1.158306476 |
| 4 | 1.544408634 |
| 5 | 1.930510793 |
| 10 | 3.861021585 |
| 20 | 7.722043171 |
| 25 | 9.652553964 |
| 50 | 19.30510793 |
| 100 | 38.61021585 |
| 250 | 96.52553964 |
| 500 | 193.0510793 |
| 1,000 | 386.1021585 |
The two units
Square kilometer (km²). One million square meters, or 100 hectares.
Square mile (mi²). 640 acres.
Convert square kilometers to other units
- Square kilometers to square meters — 1 km² = 1,000,000 m²
- Square kilometers to square centimeters — 1 km² = 10,000,000,000 cm²
- Square kilometers to hectares — 1 km² = 100 ha
- Square kilometers to acres — 1 km² = 247.1053815 ac
- Square kilometers to square feet — 1 km² = 10,763,910.42 ft²
- Square kilometers to square inches — 1 km² = 1,550,003,100 in²
- Square kilometers to square yards — 1 km² = 1,195,990.046 yd²
Convert other units to square miles
Questions people ask
- How many square miles are in a square kilometer?
- 0.3861021585.
- How do you convert square kilometers to square miles?
- mi² = km² ÷ 2.58998811. It is the same as dividing by 2.58998811.
- How do you convert square miles back to square kilometers?
- km² = mi² × 2.58998811. See square miles to square kilometers.
Results use the legal definitions of each unit and are checked against the Pint unit library. Display rounds to 10 significant digits. All unit conversions · More tools
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