Acres to Square kilometers
Convert acres (ac) to square kilometers (km²). Live results, batch values, CSV export, formula and examples. Free, no sign-up.
Runs on your device · no data upload
Up to 500 values. Calculations stay on this device. Decimal point: dot. Results use floating-point arithmetic and the selected display precision.
Results
1 values converted
| row | input | from | result | to | error |
|---|---|---|---|---|---|
| 1 | 1 | ac | 0.0040468564224 | km² | — |
Area conversions square the corresponding length factors. Acres use the international foot.
Raw response
[
{
"row": 1,
"input": 1,
"from": "ac",
"result": "0.0040468564224",
"to": "km²"
}
]How to convert acres to square kilometers
Enter one value or paste one value per line. Change precision, swap units, then copy or export the results. Invalid values are reported individually.
result = (value × 4046.8564224 + 0 − 0) ÷ 1000000
Area conversions square the corresponding length factors. Acres use the international foot.
| Acres (ac) | Square kilometers (km²) |
|---|---|
| 0 | 0 |
| 1 | 0.0040468564224 |
| 10 | 0.040468564224 |
| 100 | 0.40468564224 |
Reference: NIST unit conversion factors. Decimal and binary storage prefixes are distinct; rounded display values do not change the underlying calculation.