Disclaimer

Last updated: 2026-05-26

Estimates only

The calculators and information provided by CalcMaterials are for general guidance and estimating purposes only. They produce approximate quantities based on standard industry densities, coverage rates, and rules of thumb. Actual material needs vary with site conditions, product specifications, moisture content, compaction, layout, waste, and supplier packaging.

Always confirm quantities, densities, coverage, and structural requirements with your material supplier and a qualified professional before ordering or building. CalcMaterials is not a substitute for professional engineering, design, or trade advice. For load-bearing or structural work — such as retaining walls, decking, and framing — follow local building codes and have your plans reviewed by a licensed professional.

No warranty

We make no warranties, express or implied, about the accuracy, completeness, or suitability of the information and calculations on this site. To the fullest extent permitted by law, CalcMaterials accepts no liability for any loss, cost, over- or under-ordering, damage, or injury arising from the use of these calculators or any information on this site. You use the tools at your own risk.

Pricing

Any cost estimates are based on a price you enter and are illustrative only. They do not include delivery, tax, labor, or supplier minimums, and they do not represent an offer or quote.

Affiliate disclosure

CalcMaterials participates in affiliate programs. Some outbound links on this site — clearly marked as affiliate or "Shop" links — are affiliate links. If you click one of these links and make a purchase, we may earn a commission at no additional cost to you. We only link to products relevant to your project, and our recommendations and calculator results are never influenced by affiliate relationships. As an affiliate, we may earn from qualifying purchases.

External links

This site may link to third-party websites for your convenience. We are not responsible for the content, accuracy, or practices of those external sites.

Questions

If anything here is unclear, contact us at hello@calcmaterials.com or via our Contact page.