Square Feet to Acres Calculator
Acres and square feet are both common area units in the United States. An acre equals 43,560 square feet and is the standard unit for measuring land parcels. Electricians working on large commercial or industrial sites often need to convert between these units when estimating conduit runs, trench lengths, and material requirements.
Enter an area in square feet and this calculator returns the equivalent in acres. Useful for site planning, permit applications, and large-scale electrical project estimates.
Formula
Acres = Square Feet / 43,560
1 acre = 43,560 ft²
Frequently Asked Questions
How many square feet are in one acre?
One acre equals exactly 43,560 square feet. To convert square feet to acres, divide by 43,560.
How do you convert square feet to acres?
Divide the area in square feet by 43,560. For example, 87,120 square feet divided by 43,560 equals exactly 2 acres. A half-acre lot is 21,780 square feet.
Why is the sq ft to acres conversion useful in electrical work?
Large commercial and industrial electrical projects often reference lot sizes in acres. Converting to square feet helps electricians estimate conduit runs, trench lengths for underground feeds, and overall material requirements for site-wide electrical installations.