Square Feet to Acres Converter
1 acre = 43,560 square feet exactly. Used in US real estate and land measurement.
Formula:1 acre = 43,560 ft2
Quick conversion table — Sq. foot to Acre
0.5 ft²0.0000114784 ac
1 ft²0.0000229568 ac
2 ft²0.0000459136 ac
5 ft²0.000114784 ac
10 ft²0.000229568 ac
20 ft²0.000459136 ac
50 ft²0.00114784 ac
100 ft²0.00229568 ac
500 ft²0.0114784 ac
1,000 ft²0.0229568 ac
How to convert ft2 to ac
To convert square feet to acres, use the formula: 1 acre = 43,560 ft2. Simply enter the value you want to convert in the field above and the result appears instantly. You can also type in the result field to reverse the conversion.
All conversions use precise mathematical constants validated against international SI standards (NIST and ISO 80000). Results are accurate to 8 significant figures.
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