# Square Feet to Acres | sq ft to ac

## Calculator Use

Convert area units of square feet (ft²) to acres (ac). Answer will include the formula for quick conversions from ft² to ac.

The square feet symbol is ft² however you will also see it represented as sf, sqft or sq ft.

To convert ac to ft² use the Acres to Square Feet Converter

## How to convert square feet to acres

Divide square foot area by 43,560

### Explanation:

1 acre is defined as exactly 43,560 square feet. Stated differently, there are 43,560 square feet in an acre and this can be written 43,560 ft²/ac.

Therefore, to convert square feet to acres divide by 43,560 ft²/ac. Units of ft² will cancel, and you are left with ac area units.

ac = ft² / 43,560 ft²/ac

Alternatively 1 square foot is 1/43,560 acres which is about 2.295684E-5 ac and we can state that there are 2.295684E-5 acres per square foot or 2.295684E-5 ac/ft². Multiply this conversion factor by square feet to convert to acres. The ft² cancel and ac remains.

ac = ft² × 2.295684E-5 ac/ft²

Example: Convert 10,000 square feet to acres.

10,000 ft² to ac is calculated here using the division factor 43,560

10,000 ft² / 43,560 ft²/ac

Divide through and cancel ft² units

10,000 ~~ft²~~ / 43,560
~~ft²~~/ac = 0.22957 ac

10,000 ft² ≈ 0.23 ac

## Acre

The
acre is a unit of area and has the symbol
**ac**. Historically an acre is a measure of land area in the
British imperial system of units and
United States customary units and was defined as exactly 66 ft x 660 ft which equals 43,560 ft². 1 ac = 43,560 ft². Therefore, 1 ft² is exactly 1/43,560 ac which is about 0.0000229568411 ac. 1 ft² ≈ 2.295684E-5 ac.

## Square Foot

A
square foot is a unit of area and has the symbol
**ft²** but you will also see people use sf, sqft and sq ft. Three square feet can be expressed as
**3 ft²**. 1 square foot is the area of a square that has all sides equal to 1 foot. The length and width of this square is 1 ft x 1 ft = 1 ft² since area of a square is calculated by multiplying length by width. The foot is a unit of length in the
British imperial system of units and
United States customary units. 1 square foot is exactly 1/43,560 acres.

**Cite this content, page or calculator as:**

Furey, Edward "Square Feet to Acres | sq ft to ac" at https://www.calculatorsoup.com/calculators/conversions/square-feet-to-acres.php from CalculatorSoup,
*https://www.calculatorsoup.com* - Online Calculators

Last updated: August 21, 2023