Editorial Policy

A-Z Super Utility publishes free tools and the explanatory material that accompanies them. This page sets out how that material is produced, checked and corrected, so you can judge how much weight to give it.

Who writes this site

A-Z Super Utility is an independent, self-funded project. Every tool and every explanatory page on it is written and maintained in-house. We do not publish sponsored articles, guest posts, or content supplied by third parties, and no external party pays to appear in or influence our content.

How the tools are built

Each calculator implements a documented, publicly verifiable method — a standard formula, an official specification, or an established convention. Where more than one method exists, we say so on the page and explain which we use and why. Examples include:

• BMR uses the Mifflin-St Jeor equation, and the page explains why it is preferred over the older Harris-Benedict formula.
• Loan and EMI calculations use the reducing-balance method, with the flat-rate alternative explained and contrasted.
• Standard deviation offers both population and sample formulas, and explains when each applies.
• Body fat uses the US Navy circumference method, with its accuracy range stated against DEXA.

Where a method has meaningful limitations, we state them on the page rather than in a footnote. A tool that produces a confident-looking number without saying what it cannot account for is worse than no tool at all.

What this library does not publish

A tool page has to do a job of its own. We do not publish pages whose main content is someone else's: song lyrics, news headlines, Wikipedia extracts, or catalogues of books, television, and anime pulled from another service. We also do not publish chat boxes that only forward a prompt to another model, or numerology and horoscope pages. Those URLs may still exist for old bookmarks. They are not linked from the library and they are marked so search engines do not treat them as part of the site.

How the written content is produced

Every tool page in the library carries an explanation covering the underlying method, a worked example where one helps, the common mistakes that produce wrong results, and questions people actually ask. This material is written specifically for that tool. We do not publish generic filler text, spun content, or near-duplicate pages differing only in a keyword.

Where a topic has a factual answer, we give it. Where a topic is contested, or depends on jurisdiction, or has no single correct answer, we say that instead of manufacturing certainty.

Review and updates

Each tool page shows the date its content was last reviewed. Pages covering material that changes — tax bands, statutory rates, thresholds, browser support, platform limits — are checked more often than pages covering material that does not, such as arithmetic and physical constants.

When we update a page substantively, we update the review date. We do not refresh dates without changing anything.

Corrections

We correct errors. If you find one, please tell us through the contact page — a calculator that is quietly wrong is considerably worse than one that does not exist, and reports of incorrect results are the most useful messages we receive.

Confirmed factual errors are corrected as soon as we can verify them, and the page's review date is updated. Where a correction changes the substance of what a page previously said, we note that on the page.

Advertising and how the site is funded

The site is free to use and is supported by advertising. Advertising is separated from editorial in three ways:

• Advertisers have no input into what we publish, how tools work, or what our pages say.
• Advertisements are visually distinct from content and are never presented as recommendations or as part of an article.
• We do not accept payment for favourable coverage, and we publish no paid placements or sponsored links.

If we ever use affiliate links, they will be disclosed clearly on the page where they appear. At present we use none.

Where we do not give advice

Several tools touch on subjects where a wrong answer has real consequences. On those pages we are explicit about the limits of what a calculator can do:

• Health tools produce general estimates from population-level formulas. They cannot account for your medical history, medication or circumstances, and they are not a substitute for a doctor or registered dietitian.
• Financial tools perform arithmetic on figures you supply. They are not financial advice, and they cannot know your tax position, the terms of a specific product, or whether a decision suits you.
• Legal and tax tools reflect general rules that vary by jurisdiction and change over time. Confirm anything consequential with a qualified professional or the relevant authority.

Our full position is set out in the Disclaimer.

Privacy in the tools themselves

Most tools on this site run entirely in your browser: the values, text and files you enter are processed on your device and are not transmitted to us or stored. The exceptions are tools that necessarily consult an external service — weather, exchange rates, DNS and WHOIS lookups, and the AI assistant — which send only the query needed to return a result. Each such page says so. Full detail is in the Privacy Policy.

Use of AI

We use AI-assisted tools in drafting and editing, as many publishers now do. Every page is reviewed by a person before publication, factual claims and formulas are verified against primary sources, and we take full responsibility for everything published here. AI assistance does not change who is accountable for accuracy — we are.

Contact

Questions about this policy, corrections, or anything else: contact us or email mikirdigital@gmail.com. We read every message and reply to most within two to three business days.