Submit evidence
Use the site’s exact contact path at /contact/. Include the affected page URL, the statement or result you believe is wrong, the date you saw it, and the smallest reproducible example. For a calculator, provide every input value and unit, the displayed result, and the result you expected.
The configured corrections channel is SavcedoNiday@gmail.com.
Helpful evidence includes a current manufacturer document, government page, standards reference, supplier package specification, or a clear arithmetic derivation. Do not send private customer documents or unnecessary personal information.
Triage and review
We first reproduce the issue using the published inputs and current code. Then we compare the formula, conversion, rounding, preset, explanation, and cited source. Reports involving possible safety harm, systematic arithmetic error, broken purchasing units, privacy, or accessibility receive priority over style preferences or project-specific recommendations.
A report may be confirmed, declined with a reason, or held while better evidence is sought. A different result is not automatically an error: package yields, bulk density, coverage, pattern repeat, board dimensions, waste, and local installation requirements can vary. The page should explain those boundaries clearly enough to resolve the difference.
Publication record
When a correction changes a formula, default, worked result, purchasing recommendation, safety statement, or material source, we update the affected content and its last-reviewed date. Material corrections receive a short note describing what changed and why. Minor spelling or formatting changes may be made without a separate correction note when they do not alter meaning.
Related calculators and guides are checked when they share the same assumption or source. Automated arithmetic and content tests are rerun before release. This process is designed to make the current page accurate and traceable; it is not a guarantee that every page is error-free.