Online Calculators

Acres to Square Feet | ac to sq ft

acres to ft² Converter
= 43,560 ft2

Multiply by 43,560
for quick conversions

ac × 43,560 = ft2


To convert ac to ft2, use the conversion factor

1 ac = 43,560 ft2

Then divide both sides of the equation by ac, to get the conversion ratio

1 = 43,560 ft2 / ac

Using the conversion ratio to complete the unit conversion, basically multiplying the input by 1, the ac units cancel out, and we are left with ft2 units.

1 ac × 43,560 ft2 / ac
= 43,560 ft2

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Calculator Use

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

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

How to convert acres to square feet

Multiply acre area by 43,560


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

ft² = ac × 43,560 ft²/ac

Alternatively 1 square foot is 1/43,560 acres which is about 2.295684E-5 ac. Therefore, we can divide acres by 2.295684E-5 ac/ft² to convert to feet squared. The ac units cancel and ft² units remain.

ft² = ac ÷ 2.295684E-5 ac/ft²

Quick Conversion
Multiply by
or Divide by
acres to square feet
square feet to acres

Example: Convert 5 acres to square feet.

5 ac to ft² is calculated here using the multiplication factor 43,560
5 ac × 43,560 ft²/ac
Multiply through and cancel ac units
5 ac × 43,560 ft²/ac = 217,800 ft²

5 ac = 217,800 ft²

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.


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.


Cite this content, page or calculator as:

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

Last updated: August 21, 2023

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