This page exists so you can judge whether to trust a number on this site without having to take our word for it.
Who is responsible. HomeCalcy is published by Grandfield Media Private Limited. Every page is written, calculated and reviewed in-house. There are no guest posts, no syndicated content and no AI-generated filler published without review.
Where numbers come from. Every figure is one of three things, and each page says which: a value from a named published source that we link to; arithmetic derived from such a value, with the formula written out on the page; or a common retail convention where no standard exists. We do not describe a retail convention as a standard. Where the underlying document is paywalled — some engineering standards are — we say so and show the derivation instead, so the arithmetic can be checked without buying anything.
How a page is checked before it goes live. Four automated checks run against the built pages, not against our intentions, and any one of them failing stops publication.
1. The publication gate. Reads the finished HTML of every page and blocks on a missing title, a short description, a missing canonical, more than one H1, a broken internal link, a dead link, a template error left in the text, or a paid link without a disclosure beside it.
2. The consistency check. No two pages may state different numbers for the same physical thing. Every bed dimension on the site comes from a single file, and this check proves that the charts, the calculators and the individual size pages all agree with it — including that the calculator’s own thresholds match the clearances the charts are built from.
3. The calculation tests. Each calculator is run against known inputs with hand-worked expected answers, including boundary cases. Where a manufacturer publishes a worked example, we test against their example rather than our own.
4. The browser check. A real browser loads the live pages, fills in each calculator, presses the button and reads the answer off the screen, checking for JavaScript errors and layout problems on a phone-sized screen. A calculator that works in theory but not in a browser has not worked.
Corrections. When we find an error we fix it and we do not quietly rewrite history: the change is recorded. If a correction changes an answer materially, the page says so. Pages carry a last-reviewed date.
Tell us when we are wrong. If a number here disagrees with the tape measure in your hand, the tape measure wins and we want to know. The contact page has the address.