Acres to square feet
Express land area in square feet. One international acre contains 43,560 square feet.
Edit either value. Use a decimal point; commas group thousands. Rounding affects display only.
How to convert acres to square feet
Express land area in square feet. One international acre contains 43,560 square feet.
Formula coefficients shown rounded. Calculations use the stored factors before display rounding.
A worked example
For 10 ac, the result is approximately 435600 ft². To go the other way, edit the result above or swap the units.
Square units scale in two dimensions: one square meter equals 10,000 square centimeters.
Where the numbers come from
Factors follow NIST conversion references and documented unit definitions. Read our accuracy and rounding notes.
The table and method describe this page’s original pair. Changing units above does not change this reference section.
| Acres (ac) | Square feet (ft²) |
|---|---|
| 1 | 43560 |
| 2 | 87120 |
| 5 | 217800 |
| 10 | 435600 |
| 20 | 871200 |
| 25 | 1089000 |
| 50 | 2178000 |
| 100 | 4356000 |
| 500 | 21780000 |
| 1000 | 43560000 |