Home & travel tools
Square Footage Calculator
Calculate floor area for rectangular spaces and estimate total square feet across multiple rooms.
Calculate the area of a rectangular room, floor, patio, rug space, or other surface in square feet, with optional unit equivalents.
Basic area formula
For a rectangle, square footage equals length in feet multiplied by width in feet. A 15-foot by 12-foot room is 180 square feet.
Irregular spaces
Break an L-shaped or irregular room into smaller rectangles, calculate each one, then add the results.
Material estimates
Flooring, tile, and similar projects often require extra material for cuts and waste. The correct waste allowance depends on the material and layout.
Frequently asked questions
Can I use decimals?Yes. Enter decimal feet such as 10.5.
Does this calculate cubic feet?No. Square footage measures area, not volume.