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Convert square feet to acres
Instant, accurate ft² → ac conversion with a live converter, table and formula.
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1 square feet = 0.0000229568 acres
1 acre = 43560 square feet
square feet to acres table
| square feet (ft²) | acres (ac) |
|---|---|
| 0.5 | 0.0000114784 |
| 1 | 0.0000229568 |
| 2 | 0.0000459137 |
| 5 | 0.000114784 |
| 10 | 0.000229568 |
| 20 | 0.000459137 |
| 50 | 0.00114784 |
| 100 | 0.00229568 |
| 500 | 0.0114784 |
| 1000 | 0.0229568 |
Formula
acres = square feet × 0.0000229568.
Example
10 square feet = 0.000229568 acres.
What is a square feet?
A square foot (ft²) is the imperial area unit (0.0929 m²), common in US real estate.
What is a acre?
An acre is 43,560 square feet (4,047 m²), used for land area.
Real-world reference points
A parking space is ~12 m²; a tennis court ~261 m²; a football pitch ~7,100 m² (about 1.8 acres).
| Reference | square feet | acres |
|---|---|---|
| Parking space | 135 ft² | 0.00309 ac |
| One-bedroom flat | 538 ft² | 0.0124 ac |
| Tennis court | 2,808 ft² | 0.0645 ac |
| Football (soccer) pitch | 76,854 ft² | 1.76 ac |
| City block (typical) | 215,000 ft² | 4.94 ac |
Mistakes to avoid with area conversions
- Confusing '10 square feet' with 'a 10-foot square' — the square is 100 ft², ten times bigger.
- Swapping acres and hectares: a hectare is ~2.47 acres, enough to wreck a land deal.
- Quoting apartment size in built-up vs carpet area without saying which — they differ 15-30%.
Frequently asked questions
How many acres in a square feet?+
1 square feet = 0.0000229568 acres.
How do I convert square feet to acres?+
Enter the value in the square feet box above and the acres value appears instantly. You can also type in the acres box to convert the other way.
Is this ft² to ac converter free?+
Yes — it is 100% free, needs no sign-up, and runs entirely in your browser.