Stable Numbers
Square Kilometres to Square Miles Converter
Convert km² to mi² or mi² to km². Clean, quick and accurate.
Conversion factors
1 km² = 0.3861021585424458 mi² • 1 mi² = 2.589988110336 km²
More conversions live in the conversion tools hub.
How it works
1 mile is exactly 1.609344 kilometres, so 1 square mile is exactly 2.589988110336 square kilometres. That makes 1 square kilometre ≈ 0.3861021585424458 square miles.
mi² = km² × 0.3861021585424458
km² = mi² × 2.589988110336
When this helps
- Maps and geography reports
- Land area, agriculture and planning
- Comparing international area figures
Explore more in the conversion tools hub.