Square feet to Acres Converter
Convert square foot to acre instantly. Type a value below — the result updates as you type.
When you need to convert square foot to acre
Area conversions are essential when buying land, ordering flooring, turf or paint, or comparing property listings that quote space in different units across regions.
Typical values: 0.5 ft² is about 1.14784e-05 ac, and 100 ft² works out to roughly 0.0023 ac. Because the ratio is fixed at 2.29568e-05, you can scale any amount linearly — doubling the square feet doubles the acres.
Estate agents, builders and gardeners each favour different area units, so a quick conversion keeps quotes and material orders consistent.
How to convert square foot to acre
One square foot equals 2.29568e-05 acres. To convert, multiply the number of square feet by 2.29568e-05:
acres = square feet × 2.29568e-05
For example, 10 square feet × 2.29568e-05 = 0.000229568 acres.
Square feet to acres conversion table
| Area (ft²) | Acres (ac) |
|---|---|
| 1 ft² | 2.29568e-05 ac |
| 2 ft² | 4.59137e-05 ac |
| 3 ft² | 6.88705e-05 ac |
| 5 ft² | 0.000114784 ac |
| 10 ft² | 0.000229568 ac |
| 20 ft² | 0.000459137 ac |
| 50 ft² | 0.0011 ac |
| 100 ft² | 0.0023 ac |
FAQ
How many acres are in a square foot?
One square foot = 2.29568e-05 acres.
How do I convert acres back to square feet?
Divide by 2.29568e-05, or use the acres to square feet converter.