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Square Footage Calculator
Calculate rectangular area and total multiple spaces.
Square Footage Calculator result
● ToolEnter your information below
Measured area240 sq ft · 22.3 m²Recommended quantity264 sq ft · 24.53 m²
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How this tool works
Length × width calculates each rectangular area; exclusions are subtracted and any selected overage is applied after the net area is known.
Limits to know
The tool models rectangles or circles from the entered dimensions. Irregular outlines, wall thickness, slopes, and measurement error require dividing the project into measured sections or obtaining a site measurement.