Convert ft² to ac instantly — formula, worked examples and a conversion table of common values.
Convert square feet (ft²) to acres (ac). Enter a value on either side and the other updates instantly — nothing is sent to a server.
One square foot equals 0.00002296 ac. The table below lists the values people look up most often, and each one links to a page with the worked calculation.
ac = ft² ÷ 43,560| Square foot (ft²) | Acre (ac) |
|---|---|
| 0.1 | 0.00000229568 |
| 0.5 | 0.0000114784 |
| 1 | 0.0000229568 |
| 2 | 0.0000459137 |
| 3 | 0.0000688705 |
| 5 | 0.000114784 |
| 10 | 0.000229568 |
| 15 | 0.000344353 |
| 20 | 0.000459137 |
| 25 | 0.000573921 |
| 50 | 0.00114784 |
| 75 | 0.00172176 |
| 100 | 0.00229568 |
| 250 | 0.00573921 |
| 500 | 0.0114784 |
| 1,000 | 0.0229568 |
1 square foot = 0.00002296 ac.
10 ft² = 0.00022957 ac.
100 ft² = 0.00229568 ac.
Use the formula ac = ft² ÷ 43,560. Or type any value into the converter above — it works in both directions.