Convert Acre to Square Kilometre
Instant area conversion, with the formula and a full reference table.
1 ac
0.00404686 km²
1 km² = 247.11 ac
How to convert Acre to Square Kilometre
Multiply the number of acre by 0.00404686.
km² = ac × 0.00404686
To go the other way, divide instead — or multiply by 247.11.
Worked example
To convert 25 ac: 25 × 0.00404686 = 0.10117141 km².
Acre to Square Kilometre conversion table
| Acre (ac) | Square Kilometre (km²) |
|---|---|
| 1 | 0.00404686 |
| 2 | 0.00809371 |
| 3 | 0.01214057 |
| 5 | 0.02023428 |
| 10 | 0.04046856 |
| 20 | 0.08093713 |
| 25 | 0.10117141 |
| 50 | 0.20234282 |
| 100 | 0.40468564 |
| 250 | 1.0117 |
| 500 | 2.0234 |
| 1,000 | 4.0469 |