Terms of Use

Last updated June 16, 2026

By using Materials Calculatorsyou agree to these terms. If you don’t agree, please don’t use the site.

Estimates, not professional advice

The calculators provide material and quantity estimates for planning only. They are not engineering, structural, or building-code advice, and they don’t replace a licensed professional. Coverage, density, waste, and product sizes vary by manufacturer, supplier, and site conditions, so you should confirm quantities with your supplier and verify anything structural or safety-related with a qualified professional and your local code. See the Disclaimer for detail.

No warranty

The site is provided “as is,” without warranties of any kind. We work hard to keep every formula correct and to cite its basis, but we don’t guarantee that results are error-free or fit for a particular purpose. You use the calculators and rely on their results at your own risk.

Limitation of liability

To the fullest extent allowed by law, Materials Calculators and its operators are not liable for any loss or damage arising from your use of the site or reliance on its results — including over- or under-ordering material. Always double-check critical quantities before you buy or build.

Intellectual property & links

The site’s content and design are ours; please don’t copy them wholesale. You’re welcome to link to the calculators. We sometimes link to third-party sites (suppliers, standards, manufacturers) for reference; we don’t control those sites and aren’t responsible for their content.

Changes

We may update these terms from time to time; the “last updated” date above reflects the latest version. See also our Privacy Policy.