Convert square feet to acres
1 ft² = 0.00002296 ac. Change the amount below, or read the formula and the reference table further down.
1 square foot equals
acres
1 ft² = 0.00002296 ac
The formula
Square feet and acres both measure area from the same zero, so a single multiplier does the job.
ac = ft² × 0.0000229568
Going the other way? Convert acres to square feet.
Square feet to acres table
Common values, rounded for reading.
| Square feet (ft²) | Acres (ac) |
|---|---|
| 1 | 0.000023 |
| 2 | 0.000046 |
| 3 | 0.000069 |
| 4 | 0.000092 |
| 5 | 0.000115 |
| 6 | 0.000138 |
| 7 | 0.000161 |
| 8 | 0.000184 |
| 9 | 0.000207 |
| 10 | 0.00023 |
| 15 | 0.000344 |
| 20 | 0.000459 |
| 25 | 0.000574 |
| 30 | 0.000689 |
| 40 | 0.000918 |
| 50 | 0.001148 |
| 75 | 0.001722 |
| 100 | 0.002296 |
| 250 | 0.005739 |
| 500 | 0.011478 |
| 1,000 | 0.022957 |
Questions people ask
- How many acres are in a square foot?
- One square foot equals 0.0000229568 acres.
- How do I convert square feet to acres by hand?
- Multiply the number of square feet by 0.0000229568. For a rough check, 0 is close enough for most everyday use.
- What is 1 square foot in acres?
- 1 square foot is 0.00002296 acres.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.