Convert Square Kilometer to Square Mile
Use this free converter to change square kilometers (km²) into square miles (mi²). Square kilometer and square mile both measure area. As a quick reference, 1 km² equals 0.38610216 mi², and 1 mi² equals 2.5899881 km².
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Square Mile (mi²)
0.38610216
1 km² = 0.38610216 mi²
Area conversion table
| Square Kilometer | Square Mile |
|---|---|
| 0.01 | 0.0038610216 |
| 0.1 | 0.038610216 |
| 0.5 | 0.19305108 |
| 1 | 0.38610216 |
| 2 | 0.77220432 |
| 3 | 1.1583065 |
| 5 | 1.9305108 |
| 10 | 3.8610216 |
| 20 | 7.7220432 |
| 25 | 9.652554 |
| 50 | 19.305108 |
| 100 | 38.610216 |
| 1,000 | 386.10216 |
How to convert Square Kilometer to Square Mile
Multiply the square kilometer value by 0.38610216 to get square miles.
- Enter the number of square kilometers you want to convert.
- The converter instantly shows the equivalent value in square miles.
- Worked example: 15 km² × 0.38610216 = 5.7915324 mi².
- Use the swap button to reverse the conversion (square mile to square kilometer).
About these units
Square Kilometer (km²)
- Definition
- A square kilometer (km²) is the area of a square one kilometer on each side, equal to 1,000,000 square meters.
- History
- It is a metric multiple of the square meter for large areas.
- Current use
- Square kilometers measure the area of cities, regions, lakes, and countries.
Square Mile (mi²)
- Definition
- A square mile (mi²) is the area of a square one mile on each side, about 2.59 square kilometers.
- History
- It derives from the statute mile of English origin.
- Current use
- Square miles express land area and population density in the US and UK.
Frequently asked questions
How many square miles are in a square kilometer?
There are 0.38610216 mi² in 1 km². To convert, multiply the number of square kilometers by 0.38610216.
How do I convert square kilometers to square miles?
Multiply the square kilometer value by 0.38610216 to get square miles. For example, 10 km² = 3.8610216 mi².
Is this square kilometer-to-square mile converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Square Kilometer to other area units
| Unit | 1 Square Kilometer equals |
|---|---|
| Square Meter (m²) | 1000000 m² |
| Square Centimeter (cm²) | 10000000000 cm² |
| Square Mile (mi²) | 0.38610216 mi² |
| Square Yard (yd²) | 1195990 yd² |
| Square Foot (ft²) | 10763910 ft² |
| Square Inch (in²) | 1550003100 in² |
| Acre (ac) | 247.10538 ac |
| Hectare (ha) | 100 ha |