How Many Square Feet Are in an Acre?
Part of Area & Volume
Quick answer
An acre is exactly 43,560 square feet. To convert acres to square feet, multiply by 43,560; to go the other way, divide square feet by 43,560.
The acre is a unit of land area with a fixed definition: 43,560 square feet. It comes from old farming measures (one chain by one furlong) but today it's just a constant you multiply by.
Acre conversion table
| Acres | Square feet |
|---|---|
| 0.25 acre | 10,890 ft² |
| 0.5 acre | 21,780 ft² |
| 1 acre | 43,560 ft² |
| 2 acres | 87,120 ft² |
| 5 acres | 217,800 ft² |
- 1 acre ≈ 4,047 square meters.
- 1 acre = 4,840 square yards.
- 640 acres = 1 square mile.
- A standard US football field (incl. end zones) is about 1.32 acres.