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Convert acres to square feet
Instant, accurate ac → ft² conversion with a live converter, table and formula.
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1 acre = 43560 square feet
1 square feet = 0.0000229568 acres
acres to square feet table
| acres (ac) | square feet (ft²) |
|---|---|
| 0.5 | 21780 |
| 1 | 43560 |
| 2 | 87120 |
| 5 | 217800 |
| 10 | 435600 |
| 20 | 871200 |
| 50 | 2178000 |
| 100 | 4356000 |
| 500 | 21780000 |
| 1000 | 43560000 |
Formula
square feet = acres × 43560.
Example
10 acres = 435600 square feet.
What is a acre?
An acre is 43,560 square feet (4,047 m²), used for land area.
What is a square feet?
A square foot (ft²) is the imperial area unit (0.0929 m²), common in US real estate.
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 | acres | square feet |
|---|---|---|
| Parking space | 0.00309 ac | 135 ft² |
| One-bedroom flat | 0.0124 ac | 538 ft² |
| Tennis court | 0.0645 ac | 2,808 ft² |
| Football (soccer) pitch | 1.76 ac | 76,854 ft² |
| City block (typical) | 4.94 ac | 215,000 ft² |
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 square feet in a acres?+
1 acre = 43560 square feet.
How do I convert acres to square feet?+
Enter the value in the acres box above and the square feet value appears instantly. You can also type in the square feet box to convert the other way.
Is this ac to ft² converter free?+
Yes — it is 100% free, needs no sign-up, and runs entirely in your browser.