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Last updated 2026-10-08.

MaterialWhiz provides calculators and information for general estimating purposes only. Results are approximate and are not professional, engineering or legal advice. Always check quantities with suppliers and follow local building codes and manufacturer instructions. We are not liable for losses arising from the use of this site. Content © MaterialWhiz. You may link to any page.

Published by MaterialWhiz Editorial Team. We maintain the calculators, review the assumptions, and welcome corrections at MaterialWhiz.support@gmail.com.