Terms of Use

Last updated: November 2026

By accessing or using www.concretecalculator.xyz (the "Site") you agree to be bound by these Terms of Use. If you do not agree, please do not use the Site.

1. Services Provided

The Site provides free online computational tools, material estimators, and educational content to assist contractors, builders, and property owners in estimating concrete volumes, bag counts, dry ingredient batching, and structural layout dimensions. All calculations execute client-side in your web browser free of charge.

2. Estimates, Not Professional Engineering Advice

All calculator outputs, charts, formulas, and guides on this Site are informational estimates intended solely for preliminary planning. They do not constitute certified engineering plans, architectural designs, or professional surveying services.

Structural Safety Notice: Calculations involving structural elements — including but not limited to slab load capacities, rebar spacing, foundation footings, load-bearing columns, lintels, and retaining walls — are based on idealized theoretical assumptions (e.g. uniform subgrade reaction, standard concrete compressive strengths). Actual structural performance depends on site-specific geotechnical soil bearing capacity, local frost lines, water table levels, dynamic loading, and seismic zones. Final designs must be evaluated and stamped by a licensed Professional Engineer (PE) or Structural Engineer (SE) in compliance with your local building codes.

3. Accuracy, Supplier Specifications & Waste Allowances

While we rigorously test calculation algorithms against published ACI and ASTM standards, physical concrete materials vary significantly between manufacturers, batch plants, aggregate suppliers, and regional mix designs. Always confirm bag yields, water-cement ratios, slump specifications, and prices directly with your local materials supplier before ordering. Actual excavations are rarely perfectly square or level; users are strongly advised to include a 5% to 10% waste allowance to prevent cold joints. Concrete Calculator is not responsible for material shortages, overages, cold joints, or structural defects arising from reliance on Site calculations.

4. Acceptable Use

You may use the Site's calculators freely for personal and commercial project planning. You agree not to:

  • Scrape, crawl, or harvest Site data or tools via automated means at rates that disrupt service performance;
  • Misrepresent Site algorithms or copy as your own proprietary work;
  • Circumvent or tamper with client-side code, headers, or security headers.

5. Intellectual Property

The code, user interface, brand assets, and explanatory text on the Site are the property of Concrete Calculator unless otherwise noted. You may freely link to any calculator or guide on the Site.

6. Disclaimer of Warranties & Limitation of Liability

The Site and all calculation outputs are provided on an "as is" and "as available" basis without warranties of any kind, whether express or implied. To the maximum extent permitted by applicable law, Concrete Calculator, its developers, and contributors disclaim all liability for any direct, indirect, incidental, consequential, or punitive damages resulting from the use of, or inability to use, this Site or its estimates.

7. Governing Law & Jurisdiction

These Terms of Use shall be governed by and construed in accordance with applicable laws, without regard to conflict of law principles. Any legal action or dispute arising from these terms or your use of the Site shall be resolved in the competent courts of the applicable jurisdiction.

8. Contact Information

If you have questions about these Terms of Use or wish to report a calculation inquiry, contact our team at:
Email: hello@concretecalculator.xyz
Contact Page: www.concretecalculator.xyz/contact-us/