Square feet to Acres formula
acres = square feet × 0.0000229568
Multiply the number of square feet by 0.0000229568 to get acres. To go the other way, multiply by 43,560 instead, or use the acres to square feet converter.
Square feet to Acres conversion table
Common square feet to acres values, rounded for reading. The converter above keeps full precision.
| Square feet | Acres |
|---|---|
| 1 ft² | 0.0000229568 ac |
| 2 ft² | 0.0000459137 ac |
| 3 ft² | 0.0000688705 ac |
| 4 ft² | 0.0000918274 ac |
| 5 ft² | 0.000114784 ac |
| 10 ft² | 0.000229568 ac |
| 15 ft² | 0.000344353 ac |
| 20 ft² | 0.000459137 ac |
| 25 ft² | 0.000573921 ac |
| 50 ft² | 0.00114784 ac |
| 75 ft² | 0.00172176 ac |
| 100 ft² | 0.00229568 ac |
| 250 ft² | 0.00573921 ac |
| 500 ft² | 0.0114784 ac |
| 1,000 ft² | 0.0229568 ac |
Worked example
To convert 10 ft² to acres, multiply by 0.0000229568: the result is 0.000229568 ac. Area conversion factors are squared length factors. One acre equals exactly 4,046.8564224 square meters.
Frequently asked questions
How many acres are in a square foot?
One square foot equals 0.0000229568 acres (1 ft² = 0.0000229568 ac).
What is 10 square feet in acres?
10 ft² converts to 0.000229568 ac. Enter any other value in the converter above to see it recalculated instantly.
How do I convert acres back to square feet?
Reverse the calculation: one acre equals 43,560 square feet. You can also swap the units in the converter or open the acres to square feet page.
Related area conversions
Need a different pair? Open the full area converter to choose any two units.