Square Footage Calculator

Calculate square footage calculator for construction and building projects.

Free to use

12,500+ users

Updated January 2025

Instant results

Square Footage Calculator

Calculate area for rooms and spaces

Select Shape to Add

Length (ft)

Width (ft)

How to Calculate Square Footage

Square footage is a measurement of area, expressed in square feet. For complex rooms, break the space down into simple shapes (rectangles, circles, triangles), calculate the area of each, and then add them together for the total.

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