Disclaimer

BuildCalc Pro is not an engineering firm, and nothing on this site constitutes engineering, architectural, legal, or financial advice. Our calculators implement standard industry formulas with clearly stated assumptions but every project has site conditions, loads, soils, and code requirements that no general-purpose calculator can know about.

Before you build, buy, or bid based on our numbers, have them reviewed by the appropriate licensed professional a structural engineer for structural work, a licensed electrician for electrical sizing, and so on. Material quantities should be confirmed with your supplier; prices and availability change.

Building codes vary by jurisdiction and change over time. Where our guides or calculators reference code provisions (for example, stair dimensions under the IRC), treat them as educational summaries always confirm the current, locally adopted code with your building department or inspector before construction.

Every calculator documents its key assumptions default waste percentages, coverage rates, stock sizes, and unit conversions. Results are only as good as the inputs: measure twice, double check unusual dimensions, and sanity-check any result before ordering materials or signing a contract.

We take accuracy seriously and fix verified errors. If a result looks wrong, tell us which tool you used and what you entered via the contact form so we can investigate.