Editorial policy
The standards that govern how we create and maintain our content.
Last updated
Accuracy first
Our goal is to be genuinely useful. Every calculator and guide is built to be correct, practical, and easy to act on. We document our formulas so readers can verify the math.
Research and sources
We base coverage rates, conversions, and best practices on established industry standards and manufacturer specifications. Where practices vary by region, we say so.
Expert review
Technical content is reviewed by licensed tradespeople before publication and re-checked when standards change. Reviewers are credited on the relevant pages.
Independence
Our calculators and recommendations are not influenced by advertisers. Ads shown on the site are clearly labeled and kept separate from editorial content.
Corrections
If you spot an error, tell us via the contact page. We correct confirmed issues promptly and update the page's "last updated" date.
Updates
We periodically review published tools and guides to keep them current and accurate.