ACCURATE CONVERSION
Acres to Square feet Converter
Convert acres (ac) to square feet (ft²) with a standards-based formula.
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How to convert acres to square feet
Enter a value in the converter above. The result updates immediately using the relationship below.
FORMULA1 acre = 43,560 square feet
Acres to Square feet conversion table
| Acres (ac) | Square feet (ft²) |
|---|---|
| 1 | 43,560 |
| 5 | 217,800 |
| 10 | 435,600 |
| 20 | 871,200 |
| 50 | 2,178,000 |
| 100 | 4,356,000 |
Common values
For a quick estimate, multiply by the factor above. Use more decimal places when technical work requires additional precision.
Frequently asked questions
How many square feet are in one acre?
One acre equals 43,560 square feet.
How do you convert acres to square feet?
Multiply the acre value by 43,560.
Can I convert square feet back to acres?
Yes. One square foot equals 0.00002296 acres; you can also use the swap button.