Square Footage Calculator

Rectangle, circle, or triangle — area and an optional cost estimate.

ft
ft
$
Area
300.00 sq ft
Estimated cost
$1500.00

For irregular rooms, split the space into simple shapes, calculate each separately, and add the areas together.

Frequently asked questions

How do I measure an L-shaped or irregular room?

Split it into rectangles (or other simple shapes), calculate each piece's area separately using this tool, then add the results together for the total.

What's a typical use for the cost estimate field?

Flooring, paint, tile, or any material priced per square foot — enter the unit price and the calculator gives a rough material budget alongside the area.