Square kilometers to Square miles
1 km² ≈ 0.3861 mi². Edit either value to convert instantly.
Conversion formula
mi² = km² × (1,000,000) × (15,625 / 4.0468564224 × 10¹⁰)1 km² ≈ 0.386102 mi²
square kilometer (km²)
One square kilometer equals exactly 1,000,000 m².
Source: BIPM SI Brochure, 9th edition — SI prefixes and accepted non-SI units
square mile (mi²)
One square mile equals exactly 2,589,988.110336 m².
Source: NIST — Revised Unit Conversion Factors for the international foot
Conversion table
| km² | mi² |
|---|---|
| ≈ 0.386102 | |
| ≈ 0.772204 | |
| ≈ 1.93051 | |
| ≈ 3.86102 | |
| ≈ 5.79153 | |
| ≈ 7.72204 | |
| ≈ 9.65255 | |
| ≈ 11.5831 | |
| ≈ 15.4441 | |
| ≈ 17.3746 |
| km² | mi² |
|---|---|
| ≈ 19.3051 | |
| ≈ 23.1661 | |
| ≈ 27.0272 | |
| ≈ 30.8882 | |
| ≈ 34.7492 | |
| ≈ 38.6102 | |
| ≈ 57.9153 | |
| ≈ 61.7763 | |
| ≈ 65.6374 | |
| ≈ 69.4984 |
Frequently asked questions
How many square miles are in 1 square kilometer?
1 km² ≈ 0.3861 mi². mi² = km² × (1,000,000) × (15,625 / 4.0468564224 × 10¹⁰)
How do I convert km² to mi²?
mi² = km² × (1,000,000) × (15,625 / 4.0468564224 × 10¹⁰)
Is 1 square kilometer bigger than 1 square mile?
1 km² ≈ 0.3861 mi².
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