Square Miles to Square Kilometers Converter
Convert Square Miles to Square Kilometers (mi² to km²) instantly, with the formula and a table of common values. Free, runs in your browser, nothing uploaded.
Everything happens on your own device. Nothing you type is ever sent anywhere.
Category
Result
2.589988 km²
Formula
1 mi² = 2.589988 km²
Common Square Miles to Square Kilometers Conversions
| Square Miles | Square Kilometers |
|---|---|
| 1 mi² | 2.589988 km² |
| 2 mi² | 5.179976 km² |
| 5 mi² | 12.949941 km² |
| 10 mi² | 25.899881 km² |
| 20 mi² | 51.799762 km² |
| 50 mi² | 129.499406 km² |
| 100 mi² | 258.998811 km² |
| 500 mi² | 1,294.994055 km² |
| 1,000 mi² | 2,589.98811 km² |
This converter handles eight common unit categories - length, weight, temperature, volume, area, speed, data storage, and time - and updates the result instantly as you type, entirely in your browser. Most categories convert by a fixed ratio to a base unit (like meters for length or bytes for data), except temperature, which needs its own formula since 0°C isn't 0°F or 0 K.
Frequently asked questions
How do I convert Square Miles to Square Kilometers?
Multiply the value in mi² by 2.589988: 1 mi² = 2.589988 km², so 10 mi² = 25.899881 km².
How do I convert Square Kilometers to Square Miles?
Multiply the value in km² by 0.386102: 1 km² = 0.386102 mi², so 10 km² = 3.861022 mi².
Is the value I enter sent anywhere?
No. The conversion runs entirely in your browser, so nothing you type ever leaves your device.