Editorial standards

How content is written

Calculator explanations are written to be accurate, practical, and readable by a general audience. Each article describes what the calculator estimates, the formula or method it uses, and the assumptions built into that method. Where a calculation has well-known limitations, those are stated explicitly rather than omitted.

For health, pregnancy, nutrition, and finance topics, content is held to a higher standard. These pages include explicit methodology notes, limitation disclosures, and references to authoritative sources such as clinical guidelines, government statistical agencies, or recognised professional bodies.

How calculators are verified

Every calculator is tested against known reference values before publication. Formulas are cross-checked against primary sources — for example, standard actuarial tables, published clinical guidelines, or authoritative financial definitions — and results are compared against established tools where applicable.

Sensitive calculators — those covering body metrics, pregnancy, dietary plans, mortgage payments, salary tax, or retirement — carry a reviewed date and a brief explanation of the methodology used. These pages are periodically re-checked when underlying standards or rates are updated.

How errors are corrected

If a formula, assumption, or piece of explanatory copy is found to be incorrect, it is corrected promptly and the relevant page dates are updated. For YMYL calculators, the reviewed date marks the last trust and source check, while the updated date marks the last substantive page change.

Accuracy reports go through the shared editorial contact path at /contact/ or contact@calcipedia.org. We do not silently patch a material trust issue without refreshing the page dates that explain when the review happened.

Scope of estimates

All calculator results are estimates for planning and educational purposes. They are based on generalised formulas and standard assumptions. Results may differ from real-world outcomes due to individual circumstances, regional differences, regulatory changes, or factors the calculator cannot account for.

Where a topic has country-specific rules — such as tax rates, clinical reference ranges, or lending regulations — the calculator page states which standards or country context it uses.

Professional advice

Calcipedia does not provide medical, financial, legal, or tax advice. Calculator results should not be used as the sole basis for health decisions, investment choices, mortgage commitments, or tax filings. Where professional judgement is warranted, we say so on the page.

Source selection

Reference links on calculator pages point to primary sources: peer-reviewed literature, official clinical bodies (such as ACOG, NHS, WHO), government statistical agencies, and authoritative industry standards. We do not link to commercial affiliate sources or sites with a financial interest in a specific outcome.

Reviewer criteria

Reviewers are assigned by topic fit, not by invented credentials. We only describe backgrounds and responsibilities that can be substantiated on the author's profile. For sensitive pages, the reviewer checks formula scope, source quality, and whether the disclaimer matches the real risk of misuse.

Correction logging

Sensitive calculator pages carry a change-note line in the trust block. It tells users that substantive corrections refresh the reviewed and updated dates, and it points back to the editorial contact route for follow-up.

Accountability pages

The About page, contact page, author profiles, and the per-calculator trust block are expected to agree on who owns the topic and how corrections are handled.