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Acre to Square foot
Convert acre (ac) to square foot (ft²) — with the exact factor, a quick-reference table and a free converter that works offline.
1 ac = 43,560 ft²
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Conversion table
| Acre (ac) | Square foot (ft²) |
|---|---|
| 0.1 ac | 4,356 ft² |
| 0.5 ac | 21,780 ft² |
| 1 ac | 43,560 ft² |
| 2 ac | 87,120 ft² |
| 5 ac | 217,800 ft² |
| 10 ac | 435,600 ft² |
| 25 ac | 1,089,000 ft² |
| 100 ac | 4,356,000 ft² |
How the conversion works
Both units measure area. One acre equals exactly 43,560 ft², so multiply by that factor to convert.
FAQ
How many square foots in a acre?
1 ac = 43,560 ft².
How do I convert acre to square foot?
Multiply the acre value by 43,560. For example, 10 ac × 43,560 = 435,600 ft².
Where does the factor come from?
The conversion factor is defined in NIST SP 811; both units are area units converted through square meter.
Related conversions
Conversion factors: NIST SP 811. Computed by the same engine that powers the app.
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