Square Kilometer to Square Mile Conversion
1 Square Kilometer (km²) equals 0.3861021586 Square Mile (mi²).
1 Square Kilometer = 0.3861021586 Square Mile
How to convert Square Kilometer to Square Mile
Multiply the value in Square Kilometer by 0.3861021586 to get Square Mile. To convert back from Square Mile to Square Kilometer, divide by 0.3861021586 — or multiply by 2.58998811.
mi² = km² × 0.3861021586
Example: 25 km² × 0.3861021586 = 9.652553965 mi².
Watch out: Area units scale with the square of length units. One metre is 100 centimetres, but one square metre is 10,000 square centimetres — a frequent source of errors.
Square Kilometer to Square Mile conversion table
| Square Kilometer (km²) | Square Mile (mi²) |
|---|---|
| 1 | 0.3861021586 |
| 2 | 0.7722043172 |
| 3 | 1.158306476 |
| 4 | 1.544408634 |
| 5 | 1.930510793 |
| 10 | 3.861021586 |
| 15 | 5.791532379 |
| 20 | 7.722043172 |
| 25 | 9.652553965 |
| 50 | 19.30510793 |
| 75 | 28.95766189 |
| 100 | 38.61021586 |
| 250 | 96.52553965 |
| 500 | 193.0510793 |
| 1,000 | 386.1021586 |
Frequently asked questions
What is 1 Square Kilometer in Square Mile?
1 Square Kilometer (km²) is 0.3861021586 Square Mile (mi²).
What is 1 Square Mile in Square Kilometer?
1 Square Mile (mi²) is 2.58998811 Square Kilometer (km²).
How do I convert Square Kilometer to Square Mile?
Multiply the value in Square Kilometer by 0.3861021586. For example, 5 km² × 0.3861021586 = 1.930510793 mi². To go the other way, divide by 0.3861021586.
How many units does the area converter support?
It converts between 10 units: Square Meter, Square Kilometer, Square Centimeter, Square Millimeter, Hectare, Acre, Square Mile, Square Yard, Square Foot, Square Inch.
What should I watch out for when converting area?
Area units scale with the square of length units. One metre is 100 centimetres, but one square metre is 10,000 square centimetres — a frequent source of errors.
More area conversions
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For any other area unit, use the full Area Converter.