Convert Square Feet to Acres
One square foot equals 0.0000229568 acres. Type any value to convert square feet to acres instantly — with a full reference table below.
Convert Square Feet to Acres
Converted in your browser — nothing you enter is sent anywhere.
How to convert Square Feet to Acres
To convert square feet to acres, multiply by 0.0000229568. One square foot equals 0.0000229568 ac, and one acre equals 43,560 ft².
- Take the value in square feet — for example 7.5 ft².
- Multiply by 0.0000229568 (the number of acres in one square foot).
- 7.5 × 0.0000229568 = 0.000172176 ac.
Square Feet to Acres conversion table
| Square Feet | Acres |
|---|---|
| 1 ft² | 0.0000229568 ac |
| 2 ft² | 0.0000459137 ac |
| 3 ft² | 0.0000688705 ac |
| 5 ft² | 0.000114784 ac |
| 10 ft² | 0.000229568 ac |
| 20 ft² | 0.000459137 ac |
| 50 ft² | 0.00114784 ac |
| 100 ft² | 0.00229568 ac |
| 200 ft² | 0.00459137 ac |
| 500 ft² | 0.0114784 ac |
| 1,000 ft² | 0.0229568 ac |
| 5,000 ft² | 0.114784 ac |
| Acres | Square Feet |
|---|---|
| 1 ac | 43,560 ft² |
| 2 ac | 87,120 ft² |
| 3 ac | 130,680 ft² |
| 5 ac | 217,800 ft² |
| 10 ac | 435,600 ft² |
| 20 ac | 871,200 ft² |
| 50 ac | 2,178,000 ft² |
| 100 ac | 4,356,000 ft² |
| 200 ac | 8,712,000 ft² |
| 500 ac | 21,780,000 ft² |
| 1,000 ac | 43,560,000 ft² |
| 5,000 ac | 217,800,000 ft² |
About converting Square Feet to Acres
Square Feet (ft²) and Acres (ac) are both units of area. The exact factor is 1 ft² = 0.0000229568 ac, so multiply by 0.0000229568 to go from square feet to acres (or divide to go back).
The conversion runs entirely in your browser. Need the reverse? Use the Acres to Square Feet converter, or the full unit converter for every unit at once.
Real-world area in square feet and acres
| Example | Square Feet | Acres |
|---|---|---|
| A doubles tennis court (23.77 × 10.97 m) | 2,806.764 ft² | 0.0644344 ac |
| An NBA basketball court (94 × 50 ft) | 4,700 ft² | 0.107897 ac |
| An American football field (incl. end zones) | 57,600 ft² | 1.322314 ac |
| A football pitch (105 × 68 m) | 76,854.32 ft² | 1.764332 ac |
| One acre | 43,560 ft² | 1 ac |
“≈” marks typical values; the rest are defined or measured figures.
The units
A square 1 foot on each side, exactly 0.09290304 m².
Used for: Floor area in the US, UK, Canada and India.
43,560 square feet, exactly 4,046.8564224 m².
Used for: Farmland and property in the US, UK, India and Australia.
Area factors are the squares of exact length factors, so they are exact too (an international acre is exactly 4,046.8564224 m²).