Convert Square Feet to Acres
Please provide values below to convert square foot [ft^2] to acre [ac], or vice versa.
Definition: Square Foot
Square foot (symbol: sq ft) is an area unit used in the imperial and US customary systems. It is defined as the area of a square with sides of 1 foot. One square foot equals to 144 square inches.
Acre (symbol: ac) is a unit of land area used in the imperial and US customary systems. It is defined as the area of 1 chain (66 feet) by 1 furlong (660 feet), which is exactly equal to 1/640 of a square mile or 43,560 square feet. The most commonly used acre today is the international acre, which is defined as exactly 4,046.8564224 square meters in 1959.
Square Foot to Acre Conversion Table
|Square Foot [ft^2]||Acre [ac]|
|0.01 ft^2||2.2956841138659E-7 ac|
|0.1 ft^2||2.2956841138659E-6 ac|
|1 ft^2||2.2956841138659E-5 ac|
|2 ft^2||4.5913682277319E-5 ac|
|3 ft^2||6.8870523415978E-5 ac|
|5 ft^2||0.0001147842056933 ac|
|10 ft^2||0.00022956841138659 ac|
|20 ft^2||0.00045913682277319 ac|
|50 ft^2||0.001147842056933 ac|
|100 ft^2||0.0022956841138659 ac|
|1000 ft^2||0.022956841138659 ac|
How to Convert Square Foot to Acre
1 ft^2 = 2.2956841138659E-5 ac
1 ac = 43560 ft^2
Example: convert 15 ft^2 to ac:
15 ft^2 = 15 × 2.2956841138659E-5 ac = 0.00034435261707989 ac