Convert Square Feet to Acres
43,560 ft² = 1 ac. Divide the area in square feet by 43,560 to get acres.
Square Feet
ft²
Acres
ac
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Enter a value to see the result
How to Convert Square Feet to Acres
Divide the area in square feet by 43,560 to get acres.
Common Square Feet to Acres Values
Frequently Asked Questions
How many square feet is half an acre?
Half an acre is 21,780 square feet, roughly a lot measuring about 148 ft × 148 ft.
How many square feet is a quarter acre?
A quarter acre is 10,890 square feet. This is a common suburban lot size, roughly 104 ft × 104 ft.
How do I calculate the area of an irregularly shaped lot?
Break it into rectangles and triangles, calculate each area separately, then add them together. Divide the total square feet by 43,560 for acres.