square kilometers to square miles
Convert square kilometer to square mile — instant, free, with the formula shown.
1 km²=0.386102 mi²
How to convert square kilometer to square mile
To convert square kilometer to square mile, multiply by 0.38610216:
mi² = km² × 0.38610216
For example, 10 km² × 0.386102 = 3.861022 mi².
km² to mi² conversion table
| square kilometers (km²) | square miles (mi²) |
|---|---|
| 1 km² | 0.386102 mi² |
| 2 km² | 0.772204 mi² |
| 5 km² | 1.930511 mi² |
| 10 km² | 3.861022 mi² |
| 25 km² | 9.652554 mi² |
| 50 km² | 19.305108 mi² |
| 100 km² | 38.610216 mi² |
| 250 km² | 96.52554 mi² |
| 500 km² | 193.051079 mi² |
| 1000 km² | 386.102159 mi² |
Other square kilometer conversions
Convert to square mile from another unit
km² to mi² — frequently asked
How many square miles are in 1 square kilometer?
1 square kilometer = 0.386102 square miles (km² × 0.386102 = mi²).
What is the formula to convert square kilometer to square mile?
Multiply your square kilometer value by 0.38610216 to get square mile.
How do I convert 10 square kilometers to square miles?
10 km² = 3.861022 mi². For 100 km² the answer is 38.610216 mi². Use the calculator on this page for any other value.
When to convert square kilometer to square mile
1Real estate and property (sq ft, acres)
2Agriculture (hectares, acres)
3Construction and flooring (m², sq ft)
4Surveying and mapping (km², mi²)
Area conversion — common questions
How many square feet in 1 acre?
1 acre = 43,560 ft² ≈ 4,046.86 m² ≈ 0.4047 hectares.
Is 1 hectare bigger than 1 acre?
Yes. 1 hectare = 10,000 m² ≈ 2.4711 acres.
How do I convert square meters to square feet?
Multiply by 10.7639. So 100 m² = 1,076.39 ft².
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