Terms

Planning information, not a purchase guarantee

Last updated: September 10, 2026.

GravelSum provides general calculation and educational information. By using it, you agree to verify measurements, material choice, density, compaction, delivery access, pricing, taxes, minimums, increments, and the final quantity with your supplier.

No professional service

The site does not provide engineering, construction, geological, drainage, legal, tax, or other professional advice. Project conditions and local requirements vary. Consult qualified local professionals when a project requires them.

Estimates and availability

Calculations may be affected by the values you enter, product variability, field conditions, rounding, and software defects. The service and content are provided as available without a promise that an estimate will match delivered yield, installed coverage, supplier charges, or project performance.

Third-party information

External sources and supplier sites are provided for context. GravelSum does not control their content, products, availability, or practices.

Acceptable use

Do not attempt to disrupt the site, bypass security controls, or use it in a way that violates applicable law. Questions about these terms can be raised through the contact page.