Convert Square Kilometre to Square Mile
Instantly convert Square Kilometre (km²) to Square Mile (mi²). Free and accurate.
About This Conversion
What is a Square Kilometre to Square Mile conversion?
One square kilometre (km²) is equal to 0.3861021585 square mile (mi²). This relationship is fixed by international measurement standards and does not change. To convert any number of square kilometre to square mile, multiply your value by 0.3861021585; to go the other way, divide by 0.3861021585.
How to convert Square Kilometre to Square Mile
The conversion formula is: 1 km² = 0.3861021585 mi². Enter any value into the converter above and the result updates instantly. The formula is also shown alongside the answer so you can check the working or use it in your own calculations.
Where is this conversion used?
Area conversions are critical in real estate, agriculture, land surveying, urban planning, and interior decoration. Metric units include square metres and hectares; imperial units include square feet, acres, and square miles. Estate agents, farmers, architects, cartographers, and garden designers depend on area conversions. In the UK, residential floor space is usually quoted in square feet or square metres, while agricultural land is measured in acres or hectares.
Helpful tip
One football pitch is approximately 7,140 square metres (1.76 acres or 0.714 hectares) — a useful mental reference when estimating large areas.
Formula
1 km² = 0.3861021585 mi²
km² to mi² Conversion Table
| km² | mi² |
|---|---|
| 0.1 km² | 0.0386102159 mi² |
| 0.5 km² | 0.1930510793 mi² |
| 1 km² | 0.3861021585 mi² |
| 2 km² | 0.7722043171 mi² |
| 5 km² | 1.93051079 mi² |
| 10 km² | 3.86102159 mi² |
| 20 km² | 7.72204317 mi² |
| 25 km² | 9.65255396 mi² |
| 50 km² | 19.30510793 mi² |
| 100 km² | 38.61021585 mi² |
| 250 km² | 96.52553964 mi² |
| 500 km² | 193.05107927 mi² |
| 1000 km² | 386.10215854 mi² |