To convert square kilometers to square miles, use square miles = square kilometers × 0.386102159. For example, 5 km² = 1.93051 sq mi.
How to convert Square KM to Square Miles
- Type the value in square kilometers.
- The answer in square miles appears instantly, with the formula.
- Use ⇄ to swap the direction, or pick other units.
Square KM to Square Miles formula
square miles = square kilometers × 0.386102159
Example: 5 km² = 1.93051 sq mi.
Reverse: 1 sq mi = 2.5899881 km² (see Square Miles to Square KM).
Square KM to Square Miles conversion table
| Square kilometer (km²) | Square mile (sq mi) |
|---|---|
| 1 | 0.386102 |
| 2 | 0.772204 |
| 3 | 1.15831 |
| 4 | 1.54441 |
| 5 | 1.93051 |
| 6 | 2.31661 |
| 7 | 2.70272 |
| 8 | 3.08882 |
| 9 | 3.47492 |
| 10 | 3.86102 |
| 11 | 4.24712 |
| 12 | 4.63323 |
| 15 | 5.79153 |
| 20 | 7.72204 |
| 25 | 9.65255 |
| 30 | 11.5831 |
| 40 | 15.4441 |
| 50 | 19.3051 |
| 60 | 23.1661 |
| 70 | 27.0272 |
| 75 | 28.9577 |
| 80 | 30.8882 |
| 90 | 34.7492 |
| 100 | 38.6102 |
| 150 | 57.9153 |
| 200 | 77.2204 |
| 250 | 96.5255 |
| 500 | 193.051 |
| 1,000 | 386.102 |
About these units
Square kilometer (km²): One million square metres, or 100 hectares.
Square mile (sq mi): 640 acres, about 2.59 km².
Frequently asked questions
How many square miles are in a square kilometer?
There are 0.38610216 square miles in one square kilometer.
How do I convert square kilometers to square miles?
square miles = square kilometers × 0.386102159. Example: 5 km² = 1.93051 sq mi.
Updated October 2026 · Built and tested by Sharjeel Tahir · How our tools are tested