Square Footage Calculator

Measure any room, house, yard or lot. Pick a shape, enter the dimensions, and get square footage instantly in every unit.

ft
ft
ft
For L-shape: the cut-out width (C × D removed from the corner).
ft
For L-shape: the cut-out depth. For trapezoid: the short base.
Multiply the result by the number of identical areas.

📏 5 shapes

Rectangle, L-shape, triangle, circle and trapezoid.

↔ Unit switch

Enter in ft, m, yd or in — results in all units.

🏡 Property ready

See acres for land, sq ft for homes.

🔒 Private

All calculations run locally in your browser.

Measure everything

Pair this with the tools below to plan your next project.

Wall Area → Room Area Sq Ft to Linear Ft

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