About us
Who builds Free Concrete Calculator, how every formula and worked example is checked by a technical reviewer, and how we keep the site free.
Free Concrete Calculator gives homeowners, DIYers and small contractors fast, accurate answers to one question: how much material do I need, and what will it cost? Every tool runs in your browser, works in US and metric units, and is free with no sign-up.
Who we are
- Izhar Ahmad Danish, Independent Researcher & Blogger: research and writing.
- M Bilal, Technical Reviewer: checks every formula and table.
How we work
The calculation library behind every calculator has automated tests with worked examples. We publish our sources on the methodology page and follow our editorial standards.
How the site is funded
The site is supported by advertising. Advertisers have no influence on our numbers or recommendations, and ads are never placed between calculator inputs and results.