Square Footage Calculator
Calculate total square footage across identical spaces, in feet or feet and inches.
Preparing your calculator…
How this calculator works
Rectangle area = length × width; square = side²; triangle = base × height ÷ 2; circle = π × (diameter ÷ 2)². Dimensions support decimal feet or feet + inches. Add, name, or remove independently measured sections and sum their areas. The identical-section count multiplies only the base section. Square meters = square feet × 0.09290304.
Use current quotes, local rates, and measured dimensions to make this estimate useful for your situation.
Frequently asked questions
Can I measure different room shapes?+
Yes. Choose a base shape and add named sections with their own shape and dimensions. For a circle, length is the diameter; for a triangle, width is the perpendicular height.
Can I send this area to a material tool?+
Related flooring, tile, and renovation links carry measured total area. Rectangular room dimensions can pass to paint. Floor area alone does not determine paintable wall area; verify wall heights and openings.