Terms of use

What the site gives

BuilderMath gives calculators for building materials: areas, volumes and the bags, yards and square feet to buy. The site is free and needs no account. By using it you accept these terms.

Estimates, not a guarantee

An answer is only as good as the sizes typed in, and real jobs differ from drawings: forms bulge, ground is uneven, materials settle and bags vary by brand. Product figures come from named documents and can change after the date they were checked. The numbers can be wrong or incomplete, and the site gives no warranty that they suit your job, your local building code or a structural design. Check with your supplier before you order, and with a qualified professional where safety or a permit is involved. You use the site at your own risk; as far as the law allows, BuilderMath is not liable for any loss that comes from relying on it.

Fair use

You may use the site, link to it and share the answers you get from it. Please do not:

• fetch pages at a rate that slows the site for others;
• try to break into the site, its server or its data.

The site may block traffic that does either.

Content

The text, tables and drawings on the site belong to BuilderMath. You may quote a short part with a link to the page it came from. Names of the sources and brands mentioned belong to their owners and are used only to say where a number comes from. The site links to no other website.

Contact

Questions about these terms: contact@buildermath.org.