How to use Square Kilometers to Square Miles
Type a value in square kilometers and the square miles figure appears straight away. The conversion table further down lists common values.
The formula
mi² = km² × 0.386102159
Examples
- 1 square kilometers to square miles
0.38610216 mi²
- 10 square kilometers to square miles
3.86102159 mi²
- 250 square kilometers to square miles
96.52553975 mi²
Square Kilometers to Square Miles conversion table
| Square Kilometers | Square Miles |
|---|---|
| 1 | 0.3861 mi² |
| 2 | 0.7722 mi² |
| 3 | 1.1583 mi² |
| 4 | 1.5444 mi² |
| 5 | 1.9305 mi² |
| 6 | 2.3166 mi² |
| 7 | 2.7027 mi² |
| 8 | 3.0888 mi² |
| 9 | 3.4749 mi² |
| 10 | 3.861 mi² |
| 15 | 5.7915 mi² |
| 20 | 7.722 mi² |
| 25 | 9.6526 mi² |
| 30 | 11.5831 mi² |
| 40 | 15.4441 mi² |
| 50 | 19.3051 mi² |
| 75 | 28.9577 mi² |
| 100 | 38.6102 mi² |
| 250 | 96.5255 mi² |
| 500 | 193.0511 mi² |
| 1,000 | 386.1022 mi² |
Limitations and assumptions
Review inputs, units and assumptions before relying on the result. Detailed content, accessibility and edge-case review remains ongoing.
Frequently asked questions
How many square miles are in one square kilometers?
One square kilometers equals 0.38610216 mi². The formula is mi² = km² × 0.386102159.
How do I convert square kilometers to square miles?
Use mi² = km² × 0.386102159. For example, 10 square kilometers gives 3.86102159 mi². Enter your own value above and the converter does the arithmetic for you.
How do I convert square miles back to square kilometers?
Use the Square Miles to Square Kilometers converter, or invert the factor by dividing instead of multiplying.
Is this conversion exact?
Area factors are the square of the matching length factor, so a small error in a length conversion grows when you convert area.