Square Footage Calculator
Plan square footage from project dimensions, material rate, and waste. Use this free square footage calculator for fast, clear results with no signup required.
Square Footage Calculator guide
What it is for
Plan material quantities for square footage calculator before purchasing supplies.
How it is calculated
Rectangular floor area equals length × width, with both dimensions in feet. Both displayed results refer to that same square-foot area; no automatic metric conversion is performed.
Assumptions
The surface is reasonably regular and the dimensions, coverage, and waste represent the real project.
Example
Worked example using the fields in order: 12, 10. The calculated primary amount is 120 sq ft; the secondary value is 120. Check the units before purchasing.
Limitations
Cuts, openings, packaging, site conditions, and local codes can change the final quantity; confirm with a supplier or professional.