Square Miles to Square Kilometers
1 square mile = 2.589988110 square kilometers
Converter Calculator
1 Square Miles = 2.589988 Square Kilometers
Explanation
Convert square miles to acres (×640), then to square meters, then divide by 1,000,000 to return square kilometers.
Common Conversion Values
| Square Miles | Square Kilometers |
|---|---|
| 0.1 | 0.258999 |
| 0.25 | 0.647497 |
| 0.5 | 1.294994 |
| 1 | 2.589988 |
| 2 | 5.179976 |
| 5 | 12.949941 |
| 10 | 25.899881 |
| 25 | 64.749703 |
| 50 | 129.499406 |
| 100 | 258.998811 |
How to use this hub
- Choose a converter family.
- If converting to/from grams from a volume unit, select an ingredient.
- For pure unit changes (volume↔volume or weight↔weight), use universal conversions.
If your conversion includes grams, you’ll choose an ingredient; otherwise you won’t.
Frequently Asked Questions
What defines this conversion?
The ratio follows exact international area definitions.
Is the reverse conversion available?
Yes. Use the switch button or open the Square Kilometers to Square Miles hub to view the mirror conversion.
Can I use decimals?
Yes. Decimal inputs are supported so fractional area values remain precise in calculator output.