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Convert Square Feet to Acres

Please provide values below to convert square foot [ft^2] to acre [ac], or vice versa.

From: square foot
To: acre
 

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.

Definition: Acre
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^22.2956841138659E-7 ac
0.1 ft^22.2956841138659E-6 ac
1 ft^22.2956841138659E-5 ac
2 ft^24.5913682277319E-5 ac
3 ft^26.8870523415978E-5 ac
5 ft^20.0001147842056933 ac
10 ft^20.00022956841138659 ac
20 ft^20.00045913682277319 ac
50 ft^20.001147842056933 ac
100 ft^20.0022956841138659 ac
1000 ft^20.022956841138659 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



Convert Square Foot to Other Area Units