Square miles to Square kilometers
1 mi² ≈ 2.59 km². Edit either value to convert instantly.
Conversion formula
km² = mi² × (2,589,988.110336) × (0.000001)1 mi² ≈ 2.58999 km²
square mile (mi²)
One square mile equals exactly 2,589,988.110336 m².
Source: NIST — Revised Unit Conversion Factors for the international foot
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
Conversion table
| mi² | km² |
|---|---|
| ≈ 2.58999 | |
| ≈ 5.17998 | |
| ≈ 12.9499 | |
| ≈ 25.8999 | |
| ≈ 38.8498 | |
| ≈ 51.7998 | |
| ≈ 64.7497 | |
| ≈ 77.6996 | |
| ≈ 103.6 | |
| ≈ 116.549 |
| mi² | km² |
|---|---|
| ≈ 129.499 | |
| ≈ 155.399 | |
| ≈ 181.299 | |
| ≈ 207.199 | |
| ≈ 233.099 | |
| ≈ 258.999 | |
| ≈ 388.498 | |
| ≈ 414.398 | |
| ≈ 440.298 | |
| ≈ 466.198 |
Frequently asked questions
How many square kilometers are in 1 square mile?
1 mi² ≈ 2.59 km². km² = mi² × (2,589,988.110336) × (0.000001)
How do I convert mi² to km²?
km² = mi² × (2,589,988.110336) × (0.000001)
Is 1 square mile bigger than 1 square kilometer?
1 mi² ≈ 2.59 km².
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