Square Miles to Square Kilometres Converter
Convert square miles to square kilometres instantly. Enter any mi² value and the km² equivalent appears immediately. Reference table covers neighbourhoods to entire countries.
Formula:[value] mi² × 2.59 = [result] km²
How to convert Square Miles to Square Kilometres
mi² × 2.59 = km²
For example: 10 mi² × 2.59 = 25.9 km²
↑ Use the converter aboveCommon Square Miles to Square Kilometres conversions
| Square Miles (mi²) | Square Kilometres (km²) |
|---|---|
| 0.5 mi² | 1.295 km² |
| 1 mi² | 2.59 km² |
| 5 mi² | 12.95 km² |
| 10 mi² | 25.9 km² |
| 50 mi² | 129.5 km² |
| 100 mi² | 259 km² |
| 500 mi² | 1 km² |
| 1,000 mi² | 2 km² |
| 5,000 mi² | 12 km² |
| 10,000 mi² | 25 km² |
| 100,000 mi² | 258 km² |
About this conversion
Square miles to square kilometres converts land areas from the imperial unit used in the US and UK to the metric standard. One square mile = 2.58999 km²; one km² = 0.3861 mi². Country and state size reference: Texas = 268,596 mi² = 695,662 km², California = 163,696 mi² = 423,970 km², US total = 3,796,742 mi² = 9,833,517 km². City sizes in the US are typically given in square miles: Chicago = 234 mi² = 606 km², Los Angeles = 503 mi² = 1,302 km². When comparing US geographic data with international data, converting to km² makes comparison straightforward. 1 square mile also equals 640 acres, a common US land division.