Last updated: July 27, 2026
Acceptance of Terms
By using this website, you agree to these terms. If you do not agree, please do not use the site.
Nature of the Service
GravelCalc provides free online calculators and reference tables for estimating aggregate material quantities. All results are estimates for planning purposes only. Actual material requirements vary with site conditions, compaction, moisture content, and stone gradation.
No Professional Advice
Nothing on this site constitutes engineering, construction, or professional advice. Confirm final quantities and specifications with your material supplier or a qualified contractor before purchasing or beginning work.
Limitation of Liability
The site is provided “as is” without warranties of any kind. To the fullest extent permitted by law, we are not liable for any damages arising from use of the site, including over- or under-ordering of materials based on calculator estimates.
Intellectual Property
Site content may be cited and linked with attribution. Wholesale reproduction of pages or the calculators' code without permission is prohibited.
Changes
We may revise these terms at any time; continued use of the site constitutes acceptance of the revised terms. Questions? Contact us.