Acres to Square kilometers – acre to square kilometer Converter
1 acre = 0.0040468564224 km²
Formula
km² = acre × 0.0040468564224
Acres to square kilometers conversion table
| acres (acre) | square kilometers (km²) |
|---|---|
| 0.25 acre | 0.00101171 km² |
| 0.5 acre | 0.00202343 km² |
| 1 acre | 0.0040468564224 km² |
| 2 acre | 0.00809371 km² |
| 5 acre | 0.0202343 km² |
| 10 acre | 0.0404686 km² |
| 20 acre | 0.0809371 km² |
| 50 acre | 0.202343 km² |
| 100 acre | 0.404686 km² |
| 200 acre | 0.809371 km² |
| 500 acre | 2.02343 km² |
| 1000 acre | 4.04686 km² |
| 2500 acre | 10.1171 km² |
| 5000 acre | 20.2343 km² |
| 10000 acre | 40.4686 km² |
Acres and square kilometers are both area units. One acre equals 0.0040468564224 square kilometers; enter any value above for an instant result, or use the table for common conversions.
Sanity-check examples
1 acre = 0.00404686 km²10 acre = 0.0404686 km²2.5 acre = 0.0101171 km²
Common pitfalls and look-alike units
The mu is a Chinese market unit: 1 mu = 666.667 m² (about 666.67), not to be confused with the acre (≈ 4046.86 m²) or the hectare (10000 m² = 15 mu). Confirm which unit a land figure uses before converting.
Frequently asked questions
How many square kilometers are in a acre?
1 acre (acre) equals 0.0040468564224 square kilometer (km²).
How do I convert acres to square kilometers?
Multiply the acre value by 0.0040468564224 to get square kilometer — for example, 2 acres = 0.00809371 square kilometer.
How do I convert square kilometers back to acres?
1 square kilometer is approximately 247.105 acre. Use the swap button or the reverse conversion page linked on this page.