Acre to Square kilometer (ac → km²)
Convert acre to square kilometer instantly. The conversion factor below is exact by international definition.
Realtime·area·imperial
Exact
ac
× 0.004
km²
0.004047
Precision [auto]
6
📐ac to km² formulaExact
km² = ac × 0.004046856422
Inverse: ac = km² × 247.105381467165
Worked example: 1 ac = 0.004046856422 km²
ℹ️About these units
Acre (ac)
Agricultural land in US, UK, India.
Square kilometer (km²)
📊Reference table: ac → km²
| Acre (ac) | Square kilometer (km²) |
|---|---|
| 1 | 0.004047 |
| 2 | 0.008094 |
| 5 | 0.020234 |
| 10 | 0.040469 |
| 15 | 0.060703 |
| 20 | 0.080937 |
| 25 | 0.101171 |
| 50 | 0.202343 |
| 100 | 0.404686 |
| 250 | 1.0117 |
| 500 | 2.0234 |
| 750 | 3.0351 |
| 1,000 | 4.0469 |
Want a downloadable CSV? Append ?format=csv to the API /api/v1/table endpoint.
🔁Reverse & related
🔌API & widget
GET https://convertnavi.com/api/v1/convert?value=10&from=acre&to=square-kilometerEmbed this converter
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