Acres to Square feet Converter
Convert acres (ac) to square feet (ft²) instantly. Type a value above and the result updates while you type. 1 acre equals 43,560 square feet.
Result updates as you type. Values are calculated locally in your browser — nothing is sent to a server.
The formula
1 acre = 43,560 square feet
Multiply the acres value by 43,560 to get square feet. Or divide by 0.000023 to go the other way.
Acres to square feet conversion table
| ac | ft² |
|---|---|
| 1 | 43,560 |
| 2 | 87,120 |
| 3 | 130,680 |
| 4 | 174,240 |
| 5 | 217,800 |
| 6 | 261,360 |
| 7 | 304,920 |
| 8 | 348,480 |
| 9 | 392,040 |
| 10 | 435,600 |
| 15 | 653,400 |
| 20 | 871,200 |
| 25 | 1,089,000 |
| 50 | 2,178,000 |
| 75 | 3,267,000 |
| 100 | 4,356,000 |
Worked examples
- 5 ac × 43,560 = 217,800 ft²
- 30 ac × 43,560 = 1,306,800 ft²
- 165 ac × 43,560 = 7,187,400 ft²
Conversion factors follow the exact international definitions (SI/BIPM; imperial units per the 1959 International Yard and Pound Agreement, maintained by NIST). NIST unit conversion reference
Factors last verified August 2026 · Built by Jeffrey Tepper.
Looking for the other direction?
Frequently asked questions
How many square feet are in 1 acre?
1 acre equals 43,560 square feet (ac → ft²).
How do you convert acres to square feet?
Multiply the number of acres by 43,560. For example: 10 ac × 43,560 = 435,600 ft².
What is 50 ac in ft²?
50 ac equals 2,178,000 ft².
Which is bigger: 1 acre or 1 square foot?
1 acre is bigger: it equals 43,560 square feet.