Square Footage Calculator
Free square footage, area and roof calculators — add each room on its own row, mix feet and inches, and get cost estimates instantly. No sign-up.
squarefootage.cc is a set of free, browser-based calculators for anyone measuring rooms, floors, walls, or roofs — no account and no email required.
What it does
- Add one area per row, so a whole project can be measured in a single pass.
- Every row takes its own shape — rectangle, square, L-shaped, circle, or triangle — and its own unit.
- Feet-and-inches entries like 12'6" can be typed directly, no converting by hand.
- Results appear instantly in square feet, square yards, and square meters, with a material-cost estimate at a price per square foot or per square yard.
- The roof calculator takes a house footprint plus a roof pitch and returns roof surface area, roofing squares, and shingle bundles, using a pitch factor table for nine pitches from 3/12 to 12/12.
Why it exists
Most area calculators break on real measurements — mixed feet and inches, several rooms at once, or a pitched roof. This one is built around those cases.
Every calculator runs on the page with nothing to download, and the reference sections show the formulas and worked examples behind each result, so the site can double as a quick check on a contractor's quote.
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