How to convert square feet to acres
To convert a measurement in square feet to acres, multiply the value by 0.000022956841. The conversion factor comes from the relationship between both units and the square meter.
For example, to convert 5 ft² to acres: 5 × 0.000022956841 = 0.000114784206 ac.
What is a square foot?
A square foot is an imperial and US customary unit of area equal to the area of a square one foot on each side, about 0.0929 square meters. The square foot is the dominant unit for floor area in US and UK real estate, where home and office sizes are quoted in square feet. It remains the everyday area unit throughout the imperial world.
Common uses of square feet include: Home and office floor area in the US and UK; Real estate listings and rent per square foot; Flooring, tiling, and paint coverage; Retail and commercial space sizing.
What is a acre?
An acre is an imperial and US customary unit of area equal to 43,560 square feet, or about 4,046.86 square meters (roughly 0.405 hectares). The acre originally meant the area a yoke of oxen could plow in a day, standardized as 1 chain by 1 furlong (66 by 660 feet). It remains the standard unit for land and farm area in the US and UK.
Common uses of acres include: Farmland and rural land size; Residential lot and property size in the US; Real estate and development parcels; Sports field and park area references.
Square Feet to acres worked examples
Here are some common values converted:
1 ft² = 0.000022956841 ac 5 ft² = 0.000114784206 ac 10 ft² = 0.000229568411 ac 50 ft² = 0.001147842057 ac 100 ft² = 0.002295684114 ac
Frequently asked questions
How many acres are in one square foot?
One square foot (ft²) equals 0.000022956841 acres (ac). Multiply any value in square feet by 0.000022956841 to convert to acres.
How do I convert square feet to acres?
Multiply the value in square feet by 0.000022956841. For example, 5 ft² × 0.000022956841 = 0.000114784206 ac.
How do I convert acres to square feet?
Multiply the value in acres by 43,560, or divide by 0.000022956841. Use the swap button on the converter above to reverse the direction.
Is the square foot to acre conversion exact?
Yes. Area conversions derive from the exact 1959 international definitions of the meter, yard, and foot, so the factors are exact.
What is the formula for square feet to acres?
The formula is: ac = ft² × 0.000022956841. This comes from the definition of both units relative to the square meter.