Editorial Policy
Learn how EverythingCalculated.com approaches research, sources, clarity, updates, corrections and editorial transparency when creating calculator explanations, guides and supporting content.
Our Editorial Principles
Our goal is to make calculator explanations, guides and supporting information useful and understandable. The following principles guide how content is researched, written, presented, updated and corrected across EverythingCalculated.com.
Useful Before Complicated
Information should help answer the question that brought someone to the page. We aim to explain calculations and supporting concepts clearly without adding unnecessary complexity.
Relevant Sources
Where content depends on external guidance, reference values, established formulas or substantive factual information, relevant sources should be used and identified where appropriate.
Context and Limitations
Important assumptions, estimates and limitations should not be hidden. Where additional context affects how information or calculator results should be interpreted, we aim to make that context clear.
Corrections Matter
Content and calculators can contain errors or become outdated. When a meaningful problem is identified, it should be reviewed and corrected where appropriate rather than left unaddressed.
Clarity should never come at the expense of important context
We aim to make information easier to understand while still explaining material assumptions, limitations and distinctions that can affect how the information should be used.
How We Approach Sources
The type of research needed depends on the subject. When content relies on external facts, guidance, reference values or established methods, we aim to use sources that are relevant to the information being explained.
Match the Source to the Claim
A source should support the specific information for which it is being used. Different topics may therefore require different types of references rather than one source standard being applied mechanically to every page.
Prefer Relevant Authority
Where appropriate, preference is given to primary, official or otherwise authoritative material that is suitable for the subject, such as recognised guidance, published standards or established reference material.
Keep Sources Relevant
Recency matters when information can change. For more stable subjects, an older authoritative source may remain appropriate, while changing guidance, rates, thresholds or reference values may require newer material.
Sources should add genuine value
References are included where they help support, explain or provide context for substantive information. We do not believe a page becomes more trustworthy simply by adding unnecessary citations.
Reference material may be used when a calculator depends on a recognised formula, method or standard.
Relevant sources are particularly important when content depends on published guidance, thresholds or external reference values.
Sources may also support factual explanations where readers would benefit from knowing the basis for the information provided.
Not every statement requires an external citation
Basic arithmetic, straightforward explanations and internally defined utility functions may not require an outside source. References are most useful when the information genuinely depends on external evidence, guidance, standards or reference values.
Writing for Clarity & Usefulness
Calculator pages should help people understand what a tool does, what information it needs and what the result means. Supporting content is written to make useful information easier to follow while preserving important context, assumptions and limitations.
Answer the Main Question
Content should stay focused on the purpose of the page. Explanations are intended to help readers understand the calculation, result or topic without unnecessary material getting in the way.
Explain Unfamiliar Terms
Technical terminology can be necessary, particularly in health, finance and specialist calculations. Where a term may not be obvious, supporting explanations should make its meaning easier to understand.
Separate Facts From Estimates
A defined calculation, an estimate, an assumption and a real-world outcome are not necessarily the same thing. Content should make meaningful distinctions clear rather than presenting every result with the same level of certainty.
Make Limitations Visible
Important limitations should not be buried simply to make a result appear more definitive. When assumptions, individual circumstances or other factors can materially affect interpretation, that context should be provided.
Make information easier to scan and understand
Useful content is not only about the words themselves. Headings, labels, examples, short explanations and logical page structure can help readers find the information they need more efficiently.
Clear does not mean oversimplified
We aim to use straightforward language without removing details that materially affect the meaning of a calculation or explanation. When complexity matters, it should be explained rather than hidden.
Accuracy, Review & Quality Checks
We aim to reduce avoidable errors by checking the relationship between the content, the calculation and the result being presented. The type of review needed depends on the page, its subject and the complexity of the information involved.
Calculation Consistency
Calculator explanations, displayed units, assumptions and example results should correspond with the method the calculator is intended to use.
Factual Consistency
Substantive factual statements should be consistent with the relevant information and sources being relied upon where external support is appropriate.
Internal Consistency
Headings, examples, labels and explanations should not contradict the calculator or other important information presented on the same page.
Practical Usability
Pages should also be checked for practical problems such as unclear instructions, broken links, confusing labels or display issues that could affect how the information is used.
Different pages require different checks
A simple arithmetic calculator does not require the same review as a calculator that depends on external guidance, changing reference values or multiple assumptions. Checks should be appropriate to the content being published.
Check that the calculation or approach matches the purpose of the tool.
Check that important assumptions, labels and context are explained consistently.
Check the result presentation, links and other important page elements for obvious problems.
Quality checks reduce errors — they do not make errors impossible
A calculator or article can still contain an error, become outdated or behave unexpectedly. When a meaningful problem is identified, we aim to review it and make an appropriate correction where needed.
Updates & Content Maintenance
Some calculations and explanations remain stable for long periods, while others depend on guidance, reference values or information that can change. When a material change is identified, the relevant content or calculator may need to be reviewed and updated.
Guidance or Standards Change
A page may need review when guidance, recognised standards or other material information on which it relies has changed.
Reference Values Change
Calculators that depend on external thresholds, reference values or similar inputs may require updates when those underlying values change.
Better Information Becomes Available
Existing explanations may be revised when more useful, clearer or more appropriate supporting information becomes available.
A Problem Is Identified
Errors, broken functionality, unclear explanations or other meaningful problems can also trigger a review and appropriate correction.
Review what changed before changing the page
An update should address the relevant issue rather than simply changing content for the sake of appearing new. Where an underlying method or value changes, related explanations and calculator behaviour should be considered together.
Determine whether the new information materially affects the existing page or calculation.
Revise the affected calculation, explanation, reference value or supporting information where appropriate.
Review the affected page again so the updated content and calculator remain consistent.
Established calculations
Basic arithmetic, fixed conversions and established mathematical relationships may remain unchanged unless an error or implementation problem is identified.
Guidance-dependent information
Guidance, thresholds, rates, reference values and other externally determined information may change and can require corresponding updates.
Not every page changes on the same schedule
The need for an update depends on the subject and the information behind the page. A stable mathematical calculator and a tool that relies on changing external guidance do not necessarily require the same maintenance approach.
Correcting Errors & Reporting Problems
Despite careful preparation and quality checks, errors can occur and information can become outdated. If a meaningful problem is identified, we aim to review the issue and make an appropriate correction where needed.
Review the Issue
The first step is to determine what is wrong and whether the issue affects the calculation, explanation, source, link, presentation or another part of the page.
Make the Correction
Where a correction is required, the affected calculation, wording, reference value, source, link or other relevant element can be updated as appropriate.
Recheck the Page
After a meaningful correction, related content should be considered so the page remains internally consistent and the change has not introduced another obvious problem.
Help us identify a problem
If you notice an incorrect result, unclear explanation, broken link, outdated reference or another problem, you can report it directly to us.
Report a Problem →Corrections are part of maintaining useful content
Identifying an error is not a reason to leave it in place. Reader feedback can help us locate problems that need attention, and meaningful reports are considered as part of maintaining the site.
Health & Financial Content Standards
Health and financial information can affect important real-world decisions. Content in these areas therefore requires particular care around sources, assumptions, limitations and the distinction between general information and personalised professional advice.
Health Content
Health calculators can provide useful estimates and educational information, but a calculated result does not diagnose a medical condition or account for every aspect of an individual’s health.
Financial Content
Financial calculators can help people explore numbers and compare scenarios, but actual outcomes can depend on rates, fees, taxes, product terms, market conditions and individual circumstances.
Extra care where the consequences matter more
Although health and finance are different subjects, the same core editorial principles help readers understand what a calculator can — and cannot — tell them.
Use appropriate supporting material when information depends on external guidance or reference values.
Explain assumptions that materially affect how a result is calculated or interpreted.
Distinguish calculated estimates from individual outcomes, diagnoses or guarantees.
Make important limitations available rather than hiding uncertainty behind a precise-looking result.
Calculator results are informational, not personalised professional advice
Health and financial calculators can help explain numbers and explore scenarios, but they cannot account for every individual circumstance. Where a decision requires personalised medical or financial guidance, an appropriately qualified professional may be needed.
Editorial Independence & Transparency
Editorial information should be shaped by the purpose of the page and the needs of the reader. Where commercial relationships, advertising or affiliate links are present, they should not be presented as evidence that a calculation, factual statement or editorial conclusion is correct.
Reader Usefulness Comes First
Calculator explanations and supporting information should be designed to help answer the reader’s question, explain the relevant numbers and provide useful context.
Commercial Relationships Are Separate
A commercial relationship should not determine the mathematical result of a calculator or be treated as supporting evidence for a factual statement.
Relevant Relationships Should Be Clear
Where content contains advertising, sponsorship or affiliate relationships that require disclosure, appropriate disclosure should be provided so readers can understand the commercial context.
Commercial activity should be identifiable
EverythingCalculated.com may use commercial features such as advertising or affiliate relationships. Where a relationship requires disclosure, the goal is to make that relationship understandable without presenting it as part of the evidence behind a calculation or factual claim.
Evidence and commercial relationships serve different purposes
When a factual statement or calculator method requires supporting evidence, the relevant source should support that information. Payment, advertising, sponsorship or an affiliate relationship does not replace that editorial requirement.
AI-Assisted Content & Human Responsibility
EverythingCalculated.com may use artificial intelligence and other digital tools to assist parts of the research, drafting, organisation, coding and content-production process. The use of a tool does not make its output automatically accurate, complete or suitable for publication.
AI Can Assist the Workflow
Digital tools may assist with tasks such as organising information, developing drafts, improving presentation, generating code or identifying areas that require further research.
AI Is Not a Source of Authority
An AI-generated statement is not treated as evidence merely because an AI system produced it. Where external support is required, relevant sources should support the underlying information.
Publication Responsibility Remains Ours
The responsibility for deciding what appears on EverythingCalculated.com remains with the site. Using a digital tool does not transfer responsibility for published calculations, explanations or corrections to that tool.
Tool-assisted does not mean automatically published
AI assistance can make parts of content production more efficient, but generated material can contain mistakes, unsupported statements or misleading wording. Material should therefore be considered in the context of the page before publication.
AI or another digital tool may assist with an appropriate part of the workflow.
Consider the generated material for relevance, consistency and obvious problems before use.
Where substantive information requires external support, use appropriate sources rather than relying on the AI output itself.
AI-generated information can be wrong
Artificial intelligence can produce inaccurate, incomplete or unsupported information. Its use in a workflow does not replace appropriate research, relevant source material, quality checks or the need to correct identified errors.
Ownership, Originality & Copyright
We aim to present calculator explanations, guides and supporting content in our own structure and language. When information depends on third-party sources, published standards or other external material, those sources should be used appropriately without presenting another party’s original work as our own.
Original Presentation
Supporting explanations should be written and organised for the purpose of EverythingCalculated.com rather than simply reproducing another publisher’s wording or page structure.
Appropriate Attribution
Where information materially depends on an external source, attribution or a reference should be provided where appropriate so readers can understand the basis for the information.
Respect for Third-Party Rights
Third-party text, images, graphics, data and other protected material should be used only when there is an appropriate basis for doing so and with attribution where required.
Using a source is different from copying a source
Research may rely on external publications, standards, guidance or reference material. Those materials can inform our work without requiring their original expression to be reproduced. Where direct use is appropriate, attribution and other applicable requirements should be respected.
Information can have an external basis
A mathematical formula, published reference value, factual finding or recognised standard may form part of the basis for a calculator or explanation and should be sourced where appropriate.
The explanation should serve our readers
The way information is organised and explained should be developed for the reader and purpose of the page, rather than unnecessarily reproducing another publisher’s original expression.
Attribution does not replace permission where permission is required
Naming or linking to a source does not automatically provide a right to reproduce protected material. Where third-party material requires permission or another valid basis for use, attribution alone is not a substitute for that requirement.
Editorial Policy FAQs
These answers explain how our editorial standards apply to calculators, supporting information, sources, corrections and the use of digital tools across EverythingCalculated.com.
The appropriate source depends on the subject and the claim being supported. Where external support is needed, we aim to use relevant sources and, where appropriate, primary, official or otherwise authoritative material suited to the topic.
No. Basic arithmetic, fixed mathematical relationships and internally defined utility functions may not require an external reference. Sources are more important when a calculator or explanation depends on external guidance, standards, thresholds, reference values or substantive factual information.
When a meaningful problem is identified, the issue should be reviewed and the affected calculation, explanation, source, reference value, link or other relevant element corrected where appropriate. Readers can also use our Report a Problem page to bring an issue to our attention.
AI and other digital tools may assist parts of the research, drafting, organisation, coding and content-production workflow. AI output is not treated as automatically accurate or as an authoritative source. Where substantive information requires external support, relevant sources should support the information.
No. Health and financial calculators provide general informational or educational results and estimates. They are not substitutes for personalised medical or financial advice. Please also see our Medical Disclaimer and Financial Disclaimer .
Our How Our Calculators Work page explains our broader approach to formulas, inputs, assumptions, estimates, rounding, testing, limitations and calculator maintenance.
Found something that needs our attention?
Tell us about a calculation, content, source, link or technical problem so it can be reviewed.
Put Our Editorial Standards Into Practice
Our editorial standards are designed to support clear, useful and transparent calculator content. Explore our calculators and tools, or learn more about the methodology we use when building and explaining them.