Editorial Policy

What This Site Is For

CalculatorGlobe exists to answer one kind of question well: "what number do I get if I put these inputs into this formula?" Every tool on the site is free, works without an account, and runs entirely in your browser. We do not gate results behind a signup, we do not email you your answer, and we do not require you to hand over personal data to see a calculation.

Our editorial goal is narrower and more honest than "advice." A calculator gives you an estimate produced by a published formula; it cannot know your full financial picture, your medical history, or the local rules that apply to you. Every page is written to make that boundary obvious.

How Our Calculators Are Built

Each calculator starts from a published, widely used formula rather than from an invented model. Before the interface is written, the equation is implemented as a small, isolated calculation function so the math can be reasoned about on its own. The interface is then built on top of that function, which keeps the logic testable and prevents a display tweak from silently changing a result.

Constants that change from year to year, such as federal tax brackets, the standard deduction, the Social Security wage base, contribution limits, and default interest rates, are never typed into an individual page. They live in a single shared configuration file that every tool reads from, so a figure is updated in one place and the whole site follows. Our build refuses to accept a calculator that hard-codes a rate instead of importing it.

We also publish the math instead of hiding it. Calculator pages show the formula in plain notation, define each variable, and walk through a worked example with concrete numbers so you can reproduce the result by hand or in a spreadsheet. Where a calculation depends on a convention, such as compounding frequency or how a partial month is counted, we state the assumption on the page.

Where Our Numbers Come From

Formulas and reference figures are taken from primary public sources rather than from other calculator sites. For financial tools that means bodies such as the Internal Revenue Service, the Social Security Administration, and the Federal Reserve. For health and fitness tools it means the World Health Organization and the Centers for Disease Control and Prevention, together with the original published equations those bodies reference. For measurement, units, and physical constants it means the National Institute of Standards and Technology.

Calculator pages list their sources at the bottom with direct links. A link is added only after it has been opened and confirmed to resolve to a real page; anything broken or unverifiable is removed rather than left in place as decoration.

How Results Are Tested

Building the site runs three automated gates in sequence, and any one of them failing stops the build before a page can be published:

1. Source validation. A script scans every page and component before the site is compiled. It flags hard-coded rates that should come from the shared configuration, stale year references in tax and rate content, calculator counts that no longer match the real catalogue, unverifiable claims about who checked a page, and known-bad source URL patterns.
2. Static build. The site is compiled ahead of time into plain HTML. A broken import or a missing page stops the build outright, so a half-finished tool cannot be published by accident.
3. Build validation. A second script reads the generated HTML and checks the things that only exist after compilation: title and description lengths, duplicate titles and headings, heading order, canonical URLs, structured data, social tags, robots directives, disclaimers, thin pages, and every internal link against the list of pages that actually exist.

Alongside those gates we keep a separate regression test script, run by hand when a site-wide rule changes, that re-checks problems we have previously had to fix. These checks catch structural and consistency errors, not every possible modelling judgement. That is why the formula and its assumptions are printed on the page: the final check is one you can perform yourself.

How Content Is Updated

The "last updated" date at the foot of a page is not typed in by hand. It is the date that page's source file last changed in the site's revision history.

Search engines get a more precise signal. The last-modified timestamp we publish in the sitemap for each URL is derived from that page's own revision history, so it reflects when the page actually changed rather than when the site was last rebuilt. Pages that have not changed keep their real dates.

Year-dependent financial figures are reviewed at the start of each tax year and updated in the shared configuration. For 2026, financial tools use the current federal brackets, standard deduction, wage base, and contribution limits.

Corrections and Contact

If a result looks wrong, a source link is dead, or a figure is out of date, please tell us. Email [email protected] or use the contact page. It helps enormously if you include the page address, the inputs you used, and the result you expected.

Reports are reproduced before anything is changed. A confirmed calculation error is corrected as a priority, and where the fix changes how a result should be read, the page explanation is rewritten alongside the code.

Limits, Disclaimers, and What We Never Publish

Every calculator carries a disclaimer matched to its subject. Financial tools state that results are informational and not financial advice. Health and fitness tools state that results are informational and not medical advice. Math, science, and conversion tools are labelled for educational use with a reminder to verify independently. Astrology and novelty tools are labelled for entertainment only. The full text of each is collected on our disclaimer page.

We hold a strict no-fabrication standard. We do not invent people, credentials, job titles, partnerships, endorsements, awards, testimonials, statistics, or source links, and we do not attach a professional-review label to any page. If a claim cannot be traced to something real and public, it is not published.

Advertising, Sponsorship, and Affiliate Links

CalculatorGlobe currently carries no advertising, no sponsored content, and no affiliate relationships. No calculator, guide, or recommendation on this site is paid for or influenced by a third party, and no outbound link earns us a commission. If that ever changes, the arrangement will be disclosed on this page and labelled on the pages it affects before it goes live.