How to convert square feet to acres
Divide the number of square feet by 43,560. That is all there is to it, because the factor between square feet and acres never changes.
Example: 25 square feet ÷ 43,560 ≈ 0.000574 acres.
Square Feet to Acres chart
| Square feet (ft²) | Acres (ac) |
|---|---|
| 0.5 ft² | 0.00001148 ac |
| 1 ft² | 0.00002296 ac |
| 2 ft² | 0.00004591 ac |
| 3 ft² | 0.00006887 ac |
| 4 ft² | 0.00009183 ac |
| 5 ft² | 0.000115 ac |
| 6 ft² | 0.000138 ac |
| 7 ft² | 0.000161 ac |
| 8 ft² | 0.000184 ac |
| 9 ft² | 0.000207 ac |
| 10 ft² | 0.00023 ac |
| 15 ft² | 0.000344 ac |
| 20 ft² | 0.000459 ac |
| 25 ft² | 0.000574 ac |
| 30 ft² | 0.000689 ac |
| 40 ft² | 0.000918 ac |
| 50 ft² | 0.001148 ac |
| 60 ft² | 0.001377 ac |
| 70 ft² | 0.001607 ac |
| 75 ft² | 0.001722 ac |
| 80 ft² | 0.001837 ac |
| 90 ft² | 0.002066 ac |
| 100 ft² | 0.002296 ac |
| 250 ft² | 0.005739 ac |
| 500 ft² | 0.011478 ac |
| 1,000 ft² | 0.022957 ac |
Values are rounded to six decimals below 1, four decimals up to 1,000 and two decimals above. The converter above shows more digits.
About the units
One square foot is 0.09290304 square meters.
One acre is 4,046.856422 square meters.
Need the other direction? Use the Acres to Square Feet converter. For every area unit at once, open the Area Converter.
Frequently asked questions
How many acres are in a square foot?
There are 0.0000229568 acres in one square foot. In the other direction, one acre is 43,560 square feet.
How do I convert square feet to acres?
Divide the number of square feet by 43,560. For example: 25 square feet ÷ 43,560 ≈ 0.000574 acres.
What is 40 square feet in acres?
40 square feet equals 0.000918 acres.