Square Feet to Acres Converter
Divide square feet by 43,560 to get acres.
Formula
1 ft² = 0.0000229568 ac
acres = square feet ÷ 43,560
Worked example
Convert 10,000 square feet to acres
- Divide by 43,560
- 10,000 ÷ 43,560 = 0.229568
10,000 ft² = 0.229568 ac
Good to know
A 10,000 sq ft lot is 0.2296 acres — a little under a quarter acre. To find the area of a rectangular plot in acres, multiply its length by its width in feet and divide by 43,560; the square footage calculator handles the first step, including other shapes.
Conversion table
| Square feet (ft²) | Acres (ac) |
|---|---|
| 1,000 | 0.0229568 |
| 2,500 | 0.0573921 |
| 5,000 | 0.114784 |
| 7,500 | 0.172176 |
| 10,000 | 0.229568 |
| 10,890 | 0.25 |
| 15,000 | 0.344353 |
| 20,000 | 0.459137 |
| 21,780 | 0.5 |
| 43,560 | 1 |
| 87,120 | 2 |
| 100,000 | 2.29568 |
About these units
- Square foot (ft²)
- A square 1 foot on each side: exactly 0.09290304 m². Used for floor space in the US.
- Acre (ac)
- Exactly 43,560 square feet (4,046.8564224 m²). Traditionally a strip one furlong by one chain.