Convert square miles to square kilometers and square kilometers to square miles instantly. Bidirectional area converter with formula and common values.
To convert square miles to square kilometers, multiply by 2.58999. Since one mile equals 1.60934 km, one square mile equals 1.60934² = 2.58999 square kilometers.
| Square Miles | Square Kilometers |
|---|---|
| 1 | 2.590 |
| 5 | 12.950 |
| 7.4 | 19.166 |
| 25 | 64.750 |
| 100 | 258.999 |
| 500 | 1,294.994 |
| 1,000 | 2,589.988 |
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One square mile equals approximately 2.58999 square kilometers.
Multiply the number of square miles by 2.58999. For example, 7.4 mi² × 2.58999 = 19.166 km².
One square kilometer equals approximately 0.386102 square miles.
A square mile is 5,280 × 5,280 feet, equaling 27,878,400 square feet or 640 acres.