Terms of use
The ground rules for using CementCalc and the limits of the estimates it produces.
Quick answer
Acceptable use
You may use the calculators and charts freely for personal and commercial estimating. You may not scrape the site at scale, republish its charts or calculator logic as your own, or attempt to interfere with its operation or advertising.
No warranty
The site and its content are provided "as is" without warranty of any kind, express or implied. While formulas are based on standard geometry, published bag yields and accepted material densities, CementCalc does not guarantee that any result is accurate, complete or suitable for your project.
Not professional advice
Nothing on this site constitutes engineering, architectural, structural or code-compliance advice, and using it does not create a professional relationship. Reinforcement, thickness, bearing capacity and permit requirements must be confirmed with your local building department or a licensed professional. Our assumptions are documented on the methodology page.
Limitation of liability
To the maximum extent permitted by law, CementCalc is not liable for any loss, cost or damage — including wasted material, short loads, rework or project delay — arising from use of this site or reliance on its results.
Third-party links and advertising
The site links to retailers and manufacturers and displays third-party advertising. We do not control those sites, their prices or their policies. See the affiliate disclosure and privacy policy.
Contact
Questions about these terms can be sent through the contact page.