About squarefootage.cc

What This Site Is

squarefootage.cc is an independent collection of free measurement tools and practical explanations. It helps homeowners, renters, tradespeople, and property professionals work through everyday area and roof calculations without creating an account.

Our aim is to make the inputs, units, formulas, and limitations easy to understand, so you can check a calculation and decide whether it fits your situation.

What You Can Calculate Here

• Room area and totals for multiple spaces — enter dimensions, choose a shape, and add separate areas.
• Dimensions in feet and inches — use mixed measurements such as 12 ft 6 in in a simple rectangular-area tool.
• Square feet, square yards, and square meters — read equivalent area units together, find a missing side, or check an entered unit price.
• Land, acres, and geometric shapes — convert land units or work from plot and shape dimensions.
• A step-by-step guide to calculating area by hand — measure, multiply, and combine results on paper.
• Roof area and roofing squares — estimate roof coverage from a horizontal footprint and pitch.
• Roof pitch, angles, and multipliers — compare rise and run, degrees, and slope percentage.

How We Build Our Calculators

Our formulas use standard geometry and publicly documented industry conventions. The pages identify assumptions and rounding where they affect results. All calculations take place locally in your browser; measurement inputs are not uploaded or saved by the site.

Where a topic involves roofing practices, we refer to public sources such as the IRC roof assemblies chapter and GAF's low-slope shingle guidance. A reference value does not replace the requirements of a particular product, location, or project.

Why There Are No Sign-Ups or Paywalls

A quick measurement should not require an account or subscription. The tools are available without registration, payment, or a saved profile. Advertising may help support the site while keeping the calculations freely accessible.

Who Runs This Site

squarefootage.cc is run by Jingsheng Li, a freelance web developer who builds browser-based tools. He created this site after running into area and roof calculators that could not handle real measurements — mixed feet and inches, several rooms at once, or roof pitch — and wanted a set that makes the formulas easy to check.

Corrections and Feedback

If you find a calculation that looks wrong, tell us which page you used, the inputs and units, the result shown, and what you expected. Feature suggestions are welcome too. Visit our contact page to send feedback.