Square kilometres to Square miles Converter
Convert square kilometre to square mile instantly. Type a value below — the result updates as you type.
When you need to convert square kilometre to square mile
Area conversions are essential when buying land, ordering flooring, turf or paint, or comparing property listings that quote space in different units across regions.
Typical values: 0.5 km² is about 0.1931 mi², and 100 km² works out to roughly 38.6102 mi². Because the ratio is fixed at 0.3861, you can scale any amount linearly — doubling the square kilometres doubles the square miles.
Estate agents, builders and gardeners each favour different area units, so a quick conversion keeps quotes and material orders consistent.
How to convert square kilometre to square mile
One square kilometre equals 0.3861 square miles. To convert, multiply the number of square kilometres by 0.3861:
square miles = square kilometres × 0.3861
For example, 10 square kilometres × 0.3861 = 3.861 square miles.
Square kilometres to square miles conversion table
| Area (km²) | Square miles (mi²) |
|---|---|
| 1 km² | 0.3861 mi² |
| 2 km² | 0.7722 mi² |
| 3 km² | 1.1583 mi² |
| 5 km² | 1.9305 mi² |
| 10 km² | 3.861 mi² |
| 20 km² | 7.722 mi² |
| 50 km² | 19.3051 mi² |
| 100 km² | 38.6102 mi² |
FAQ
How many square miles are in a square kilometre?
One square kilometre = 0.3861 square miles.
How do I convert square miles back to square kilometres?
Divide by 0.3861, or use the square miles to square kilometres converter.