Terms of Use

Last updated: September 24, 2026

AmountHub offers free calculators and project information for general planning. By using the site, you agree to use its results as estimates and to check the details of your own project before purchasing or installing materials.

Calculator estimates

Results depend on the dimensions and assumptions entered. Material density, yield, coverage, moisture, compaction, waste and available package sizes vary. Check the exact product label, supplier quote, plans and site measurements before placing an order. The tools do not provide structural design, engineering approval or installation instructions.

Availability and changes

We may correct, update or remove a calculator or guide as the site develops. We try to keep calculations understandable and accurate, but cannot guarantee that the site will always be available or that an estimate will match a particular supplier's quantity.

Your use of the site

You may use the calculators for personal or commercial project planning. Do not interfere with the site or misrepresent an AmountHub estimate as a certified design or supplier quotation.

External services and links

Some pages link to external sites or use third-party services such as advertising and hosting. Their terms and privacy practices are separate from ours. See the Privacy Policy for information about advertising and data processing.

Feedback

If you find an error, send the calculator name, inputs and expected result through our contact page. We review useful corrections and may update a formula or explanation. Learn how the calculations work on the methodology page.