Area conversion
Square Feet to Acres
Estimate lot size and land area in acres from a survey, listing, or plan measured in square feet.
Square Feet
1 ft²
Acres
0.0000229568411387 ac
ac = ft² ÷ 43560
The formula
How to convert square feet to acres
Apply ac = ft² ÷ 43560. For example, 1000 ft² equals 0.0229568411387 ac.
Precision
Accurate constants, readable results
OmniUnit calculates with the full stored conversion factor, then displays up to 12 significant digits.
Common square feet conversions
| Square Feet | Acres |
|---|---|
| 1000 ft² | 0.0229568411387 ac |
| 5000 ft² | 0.114784205693 ac |
| 10000 ft² | 0.229568411387 ac |
| 21780 ft² | 0.5 ac |
| 43560 ft² | 1 ac |
| 100000 ft² | 2.29568411387 ac |