Convert Square feet to acres
1 square foot = 0.000022957 acres · ac = ft² ÷ 43,560
When you need this conversion
This conversion goes from square feet, the standard US unit for property and flooring, to acres, the land measure used in the US and UK. Both measure the same physical quantity, so the conversion is exact — the difference is which unit your source, tool, or region happens to use.
Square feet to acres conversion table
| Square feet (ft²) | Acres (ac) |
|---|---|
| 1 ft² | 0.000022957 ac |
| 2 ft² | 0.000045914 ac |
| 3 ft² | 0.000068871 ac |
| 5 ft² | 0.000114784 ac |
| 10 ft² | 0.000229568 ac |
| 15 ft² | 0.000344353 ac |
| 20 ft² | 0.000459137 ac |
| 25 ft² | 0.000573921 ac |
| 50 ft² | 0.001147842 ac |
| 75 ft² | 0.001721763 ac |
| 100 ft² | 0.002295684 ac |
| 250 ft² | 0.00573921 ac |
| 500 ft² | 0.011478 ac |
| 1,000 ft² | 0.022957 ac |
The formula
ac = ft² ÷ 43,560Because both units measure area, the conversion is a single multiplication by a fixed factor. That factor never changes, so the result is exact.
Convert the other way
Acres to square feet →Related area conversions
- Square feet to square meters
- Hectares to acres
- Square meters to square feet
- Acres to hectares
- Square millimeters to acres
- Square centimeters to acres
- Square meters to acres
- Square kilometers to acres
- Square inches to acres
- Square feet to square millimeters
- Square feet to square centimeters
- Square feet to square kilometers
Frequently asked questions
- How many acres are in a square foot?
- There are 0.000022957 acres in 1 square foot. The formula is ac = ft² ÷ 43,560.
- How do you convert square feet to acres?
- Use the formula ac = ft² ÷ 43,560. For example, 10 square feet equals 0.000229568 acres.
- Is the square feet to acres conversion exact?
- Yes. Square feet and acres are both units of area, related by an exact defined factor. Displayed results are rounded for readability.
- What is ft² short for?
- ft² is the standard symbol for square foot (also written as sq ft). ac is the symbol for acre.