Topic selection and search demand
Tools should answer a distinct practical question. Category coverage and established calculator directories help identify possible demand, but do not prove search volume. This release does not claim verified monthly keyword volumes or guaranteed search rankings. Similar search terms should normally lead to one complete tool.
Formula and source selection
We state the formula, units and model scope. Where specialist methods are used, relevant primary research, official documentation or educational references should explain the method. General arithmetic does not imply a specialist review. Sources are background references unless an actual review is explicitly documented.
Checks before publication
Automated checks exercise every calculator with its example inputs. Many tools also have separately specified expected answers, boundary cases and invalid-input checks. Site checks cover metadata, navigation, headings and sitemap consistency. Passing these checks does not establish that every possible input or real-world case is correct.
Authorship and professional review
Development and writing use AI assistance under the site operator’s direction. The operator is identified on the About page. No independent domain-specialist review is claimed at present. A future review statement must identify the actual reviewer, relevant credentials, scope and date.
Corrections
Report a reproducible issue through Contact. Include the URL, inputs and a source for the expected result. A correction should address the formula, validation or explanation as appropriate and include a suitable regression check. Significant changes update the page’s recorded modification date.
Update dates
Dates reflect recorded changes to page content, formulas, inputs or explanations. Rebuilding an unchanged page does not reset its date. A recent date is not a claim of clinical, legal or financial review.