Convert acre to square kilometre
Convert acre (ac) to square kilometre (km²) instantly. See the formula, a quick table and every other area unit. Free, no ads.
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Acre to square kilometre
1 ac = 0.0040468564 km². Multiply by 0.0040468564. 1 km² = 247.10538 ac.
| acre (ac) | square kilometre (km²) |
|---|---|
| 1 | 0.004046856 |
| 2 | 0.008093713 |
| 5 | 0.02023428 |
| 10 | 0.04046856 |
| 20 | 0.08093713 |
| 50 | 0.2023428 |
| 100 | 0.4046856 |
| 1,000 | 4.046856 |
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