Square kilometers to Square miles Converter
Convert square kilometers to square miles instantly. 1 km² = 0.386102 mi². Free two-way converter with the formula and a quick reference table.
How to convert square kilometers to square miles
square miles = square kilometers × 0.386102
One square kilometer equals 0.386102 square miles, so to convert square kilometers to square miles you multiply by 0.386102. Going the other way, one square mile is 2.59 square kilometers. Both units measure area, so the conversion is an exact ratio that never changes.
10 square kilometers = 3.861 square miles. Multiply your square kilometer figure by the factor above (or just type it into the box) to convert any amount.
Need the other direction? square miles to square kilometers
square kilometers to square miles table
| square kilometers (km²) | square miles (mi²) |
|---|---|
| 1 | 0.386102 |
| 2 | 0.772204 |
| 3 | 1.1583 |
| 5 | 1.9305 |
| 10 | 3.861 |
| 20 | 7.722 |
| 25 | 9.6526 |
| 50 | 19.3051 |
| 100 | 38.6102 |
| 250 | 96.5255 |
| 500 | 193.05 |
| 1,000 | 386.1 |
Frequently asked questions
How many square miles are in a square kilometer?
One square kilometer equals 0.386102 square miles. So to convert, multiply the number of square kilometers by 0.386102.
How do I convert square kilometers to square miles?
Multiply by 0.386102, or simply enter the value in the converter above — it does the math instantly and works both ways.
Is this conversion exact?
Yes — both units measure the same quantity, so the ratio is fixed and this uses the standard internationally-agreed factor.