Convert Square Miles (mi²) to Square Kilometers (km²)
1 mi² = 2.589988 km². Enter any value in mi² below and see it expressed in km² with full precision.
Formula
1 mi² = 2.589988 km²
To convert mi² to km², multiply the value by 2.589988.
Conversion Table
| Square Miles (mi²) | Square Kilometers (km²) |
|---|---|
| 0.01 mi² | 0.0259 km² |
| 0.1 mi² | 0.259 km² |
| 0.5 mi² | 1.295 km² |
| 1 mi² | 2.59 km² |
| 2 mi² | 5.18 km² |
| 3 mi² | 7.77 km² |
| 5 mi² | 12.9499 km² |
| 10 mi² | 25.8999 km² |
| 15 mi² | 38.8498 km² |
| 20 mi² | 51.7998 km² |
| 25 mi² | 64.7497 km² |
| 50 mi² | 129.4994 km² |
| 100 mi² | 258.9988 km² |
| 250 mi² | 647.497 km² |
| 500 mi² | 1294.9941 km² |
| 1000 mi² | 2589.9881 km² |
| 2500 mi² | 6474.9703 km² |
| 5000 mi² | 12949.9405 km² |
| 10000 mi² | 25899.8811 km² |
| 50000 mi² | 129499.4055 km² |
Common mi² to km² Examples
- 1 mi² = 2.59 km²
- 5 mi² = 12.9499 km²
- 10 mi² = 25.8999 km²
- 25 mi² = 64.7497 km²
- 50 mi² = 129.4994 km²
- 100 mi² = 258.9988 km²
- 500 mi² = 1294.9941 km²
- 1000 mi² = 2589.9881 km²
Frequently Asked Questions
1 mi² equals 2.589988 km². This ratio applies to every conversion between the two units.
The formula is 1 mi² = 2.589988 km². To convert any value, multiply the value by 2.589988.
Take the value in mi² and multiply the value by 2.589988. The result is the same value expressed in km².
The ratio 2.589988 is defined to high precision and is exact for most practical purposes. Rounding only matters when many decimal places are needed.
For everyday use, 2 to 4 decimal places are enough. Scientific or engineering work may require 6 or more.
Yes. Simply invert the ratio: divide the km² value by 2.589988 to get the equivalent in mi².