Square Feet to Acres Converter
Convert square feet to acres using the standard 43,560 conversion factor.
What this tool does
Convert land area from square feet to acres using the US customary conversion factor.
How to use
- Enter the number of square feet.
- View the acres result instantly.
- Use the reverse converter link if you need acres to square feet.
Formula
acres = square feet ÷ 43,560
Examples
87120 square feet
Input: 87120
Output: 2
87,120 ÷ 43,560 = 2 acres.
43560 square feet
Input: 43560
Output: 1
43,560 square feet equals exactly one acre.
Learn more
Square feet in property listings
Building footprint and lot area in US listings are often quoted in square feet. Converting to acres helps compare urban lots with rural parcels.
43,560 square feet equals one US survey acre. 10,000 sq ft is about 0.23 acres; 87,120 sq ft is 2 acres.
Use the table, then reverse
The converter includes common lot sizes and a length × width mode if you measured a rectangle in feet.
Need the other direction? Open acres to square feet without retyping the factor.
Common use cases
- Convert building or lot square footage to acres
- Compare property sizes across listings
- Prepare land area estimates
FAQ
How do I convert square feet to acres?
Divide square feet by 43,560. This tool calculates the result instantly.
Can I enter decimals?
Yes. Decimal square footage values are supported.
How many square feet are in an acre?
One US survey acre is 43,560 square feet. Divide any square-footage value by 43,560 to get acres.
How many acres is 10,000 square feet?
10,000 ÷ 43,560 ≈ 0.2296 acres, a typical urban lot. Use the conversion table on this page for other common sizes.
What is half an acre in square feet?
Half an acre is 21,780 square feet (43,560 ÷ 2).
Explore related workflows
Reverse conversion
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Last reviewed: 2026-09-04