Square Footage Calculator
Rectangle / Square
Calculate area of a rectangular space
ft
ft
Circle
Calculate area of a circular space
ft
Triangle
Calculate area of a triangular space
ft
ft
Flooring Cost
Estimate flooring cost for a room
ft
ft
$
%
Formula
Rectangle: A = L x W | Circle: A = π x r² | Triangle: A = (b x h) / 2
Frequently Asked Questions
How do I calculate square footage?
For a rectangle: multiply length by width. For example, a 12 ft x 10 ft room = 120 sq ft. For a circle: multiply pi (3.14159) by radius squared.
How many square feet in an acre?
One acre equals 43,560 square feet. A football field (including end zones) is about 57,600 sq ft or 1.32 acres.
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