Effective date: November 1, 2026
Purpose of this website
Project Calc Tools provides free material-estimating calculators and general educational guides. By using the website, you agree to use the information lawfully and acknowledge the limitations below.
Estimates are not professional advice
Results are estimates based on the values and assumptions you enter. They may not include installation patterns, compaction, waste specific to your project, shipping quantities, structural design, complex shapes or product-specific requirements. A displayed estimate is not a guarantee of actual cost, coverage or material sufficiency.
Consult product instructions, local building codes, utility-location services, suppliers and qualified professionals before starting work that could affect structural integrity, electrical systems, plumbing, safety or legal compliance.
Your responsibilities
You are responsible for checking measurements, units, site conditions, the correct materials and the suitability of any proposed work. Verify all quantities with your supplier or contractor before purchasing.
Intellectual property
Site text, original design and calculator code are made available for personal use while browsing this website. Other reproduction, redistribution or commercial reuse requires permission, except as permitted by law.
Availability and changes
We may correct calculation errors, revise information or change the tools without advance notice. We cannot guarantee uninterrupted availability or error-free operation.
External resources
External links are provided for convenience. We are not responsible for third-party products, services or content.
Liability
To the fullest extent permitted by applicable law, this website is provided on an as-is basis, without warranties of accuracy, completeness, fitness for a particular purpose or uninterrupted service. Nothing in these terms limits rights that cannot legally be excluded.
Questions
For questions about these terms or the site, use the contact form.