Ajax Calculator logo

Editorial Policy

Last Updated: September 08, 2026

AjaxCalculators.com is independently owned, managed, designed, developed, authored, tested, reviewed, and maintained by Arefin Bappy, the website’s Owner and Admin.

Unless another person is specifically identified on a page, responsibility for the calculator implementation, supporting explanations, review process, and ongoing maintenance belongs to the Admin of AjaxCalculators.

AjaxCalculators does not use fictional authors, reviewers, experts, or editorial teams.

Our Editorial Purpose

AjaxCalculators was created to help people solve real everyday problems through practical, understandable, and useful calculators.

Our editorial decisions are guided by usefulness rather than page count.

A calculator or supporting page should have a clear purpose and should help users accomplish a genuine task.

Where appropriate, a calculator page should help users understand:

  • what is being calculated;

  • which inputs are required;

  • which formula or methodology is used;

  • how the result is produced;

  • which assumptions affect the result;

  • what limitations apply;

  • how the result can be interpreted; and

  • which sources support the methodology.

Who Creates and Reviews the Content?

The primary author, developer, tester, and reviewer of AjaxCalculators is Arefin Bappy.

He is a professional web developer with several years of experience in website design and development.

As the Admin, he is directly responsible for:

  • calculator development;

  • website development;

  • calculator testing;

  • calculation implementation;

  • methodology review;

  • supporting content;

  • technical review;

  • interface design;

  • debugging;

  • maintenance;

  • source review where applicable;

  • usability improvements; and

  • correcting confirmed errors.

Where he is responsible for a page, AjaxCalculators may identify him as:

Author: Arefin Bappy
Developer: Arefin Bappy
Tested & Reviewed by: Admin, AjaxCalculators

Calculator Selection

AjaxCalculators does not aim to publish calculators simply because a keyword or topic exists.

A proposed calculator should address a practical calculation problem or provide useful functionality.

Before developing a calculator, the Admin may consider:

  • whether people genuinely need the calculation;

  • whether the problem can be solved meaningfully with an online calculator;

  • whether a recognised methodology exists;

  • whether the result can be presented clearly;

  • whether important assumptions can be explained;

  • whether AjaxCalculators can add practical value; and

  • whether the tool fits the overall purpose of the website.

Selecting a Calculation Method

Each calculator is designed around an established, widely accepted, or otherwise appropriate calculation method for its intended purpose.

Depending on the subject, this may include:

  • established mathematical formulas;

  • recognised scientific equations;

  • accepted conversion relationships;

  • statistical methodologies;

  • financial formulas;

  • official reference values;

  • published guidelines;

  • technical standards;

  • recognised estimation methods; or

  • other reputable subject-specific methodologies.

Not every calculation has one universally accepted formula.

Where multiple recognised methods exist and the choice could materially affect the result, AjaxCalculators aims to identify which method the calculator uses.

Source Standards

Where a calculator depends on external information, AjaxCalculators aims to use reputable and relevant sources.

Depending on the subject, preferred sources may include:

  1. Government agencies and official organisations;

  2. Scientific organisations;

  3. Professional bodies;

  4. Universities and academic institutions;

  5. Peer-reviewed research;

  6. Recognised technical standards;

  7. Official documentation;

  8. Established textbooks and reference materials; and

  9. Other reputable primary or specialist sources.

Sources should support the actual formula, reference value, guideline, definition, or methodology being used.

A source is not added merely to make a page appear authoritative.

Individual Calculator Review

Each calculator is individually reviewed.

Review is not limited to checking whether the page follows a shared website template.

Depending on the calculator, the Admin may review:

  • the problem being solved;

  • calculation formula;

  • methodology;

  • inputs;

  • outputs;

  • units;

  • conversion logic;

  • assumptions;

  • rounding;

  • validation;

  • limitations;

  • examples;

  • supporting explanations;

  • sources;

  • result presentation;

  • mobile functionality;

  • desktop functionality; and

  • general usability.

Different calculators require different forms of review.

A simple unit converter should not necessarily follow the same review process as a finance, health, science, construction, or statistics calculator.

Testing Standards

Every calculator is individually tested under the responsibility of the Admin.

Testing may include, where appropriate:

  • manually calculated examples;

  • known results;

  • published examples;

  • independently calculated values;

  • common input values;

  • decimal values;

  • zero values;

  • negative values where applicable;

  • very small values;

  • very large values;

  • minimum and maximum values;

  • invalid inputs;

  • missing inputs;

  • different measurement units;

  • unit combinations;

  • boundary conditions;

  • rounding behaviour;

  • browser testing;

  • mobile testing; and

  • desktop testing.

The purpose of testing is to confirm that the implemented calculator behaves consistently with its intended methodology.

Testing procedures vary according to the calculator rather than following one identical test sequence for every page.

Supporting Content

Supporting content should exist to help users understand or use a calculator.

It may include:

  • formula explanations;

  • variable definitions;

  • worked examples;

  • interpretation guidance;

  • assumptions;

  • limitations;

  • conversion information;

  • methodology;

  • source references;

  • frequently asked questions; and

  • practical usage guidance.

Supporting content should correspond to the actual calculator.

For example:

  • a formula shown on the page should match the implemented calculation;

  • worked examples should produce consistent results;

  • assumptions should reflect the calculation logic;

  • variable definitions should be accurate; and

  • sources should support the claims or methodology they accompany.

Avoiding Repetitive Page Templates

AjaxCalculators does not require every calculator page to use the same content structure.

Different calculation problems require different supporting information.

For example:

  • a simple converter may benefit from a conversion table and reverse conversion;

  • a mathematical calculator may need formulas and worked examples;

  • a financial calculator may require assumptions and scenario explanations;

  • a health calculator may require methodology, limitations, and authoritative sources;

  • a construction calculator may require measurement guidance and waste assumptions;

  • a scientific calculator may require variables, equations, and unit explanations.

The structure of each page should be based on user intent and calculator requirements, rather than forcing every page into the same semantic template.

Use of Artificial Intelligence

Artificial intelligence may assist the Admin during website development and publishing.

AI may be used for tasks such as:

  • coding;

  • debugging;

  • code improvement;

  • identifying possible edge cases;

  • suggesting test cases;

  • organising research;

  • structuring technical information;

  • improving interfaces;

  • drafting initial explanations; and

  • assisting with documentation.

AI-generated output is not considered automatically correct.

AI systems can produce:

  • programming errors;

  • inaccurate formulas;

  • incorrect explanations;

  • unsuitable assumptions;

  • fabricated references; or

  • misleading information.

For this reason, AI assistance does not replace human review.

The Admin remains responsible for:

  • deciding which calculators are published;

  • selecting the intended methodology;

  • reviewing implementations;

  • testing functionality;

  • reviewing supporting information;

  • correcting problems; and

  • maintaining the website.

Human Accountability

AjaxCalculators is not presented as an autonomous AI-generated website.

The Admin is the identifiable person responsible for the project.

AI may assist parts of the development process, but publication decisions and final responsibility remain with a real person.

Health-Related Content

Health calculators are intended for general informational and educational purposes.

The Admin reviews their technical implementation but does not claim medical qualifications.

Where appropriate, health calculators should:

  • use recognised methodologies;

  • cite reputable or authoritative sources;

  • explain significant assumptions;

  • describe relevant limitations; and

  • avoid presenting results as personalised diagnosis or treatment.

Health calculators must not be presented as substitutes for qualified healthcare professionals.

Financial Content

Financial calculators provide mathematical estimates based on formulas, assumptions, and user inputs.

Where appropriate, financial calculator pages should explain:

  • calculation method;

  • rates or assumptions used;

  • relevant limitations;

  • whether figures are estimates;

  • applicable source information; and

  • factors that may cause real-world results to differ.

They are not substitutes for personalised financial, investment, tax, accounting, insurance, or legal advice.

Construction and Technical Content

Construction and technical calculators may depend on additional real-world factors that cannot be fully represented by an online calculator.

Relevant pages should explain important assumptions and, where appropriate, remind users to consider:

  • site conditions;

  • material specifications;

  • building codes;

  • manufacturer requirements;

  • professional design;

  • engineering considerations;

  • safety requirements; and

  • regional regulations.

Review Dates

A Last Reviewed or Last Updated date should represent a genuine review or meaningful change.

Dates should not be automatically changed simply to make a page appear recently updated.

A review may include:

  • checking the calculation method;

  • retesting functionality;

  • reviewing sources;

  • correcting an error;

  • updating a changed standard;

  • improving explanations; or

  • making a meaningful functionality change.

Corrections Policy

AjaxCalculators welcomes correction reports.

If a user reports a potential error, the Admin may investigate by:

  1. Reproducing the submitted inputs;

  2. Checking the displayed result;

  3. Reviewing the implemented formula;

  4. Comparing the result with manual calculations or known examples;

  5. Reviewing relevant source material;

  6. Checking units and rounding;

  7. Testing related edge cases; and

  8. Correcting the implementation or explanation where necessary.

Confirmed errors are corrected where appropriate.

If two results differ because of legitimate alternative methodologies or rounding conventions, AjaxCalculators may explain the difference rather than classify one method as incorrect.

Significant Changes

When a meaningful change is made to a calculator, the Admin may review related areas such as:

  • calculation logic;

  • methodology;

  • examples;

  • sources;

  • assumptions;

  • result explanations;

  • metadata; and

  • related calculator links.

The purpose is to keep the page internally consistent after changes.

Independence

AjaxCalculators is independently owned and operated.

Editorial decisions about calculator development, methodology, testing, review, corrections, and website improvements are made by the Admin.

Advertising, affiliate relationships, or third-party commercial arrangements should not determine the mathematical result produced by a calculator.

Where commercial relationships exist, they should be disclosed where appropriate.

User Feedback

User feedback is an important part of maintaining AjaxCalculators.

Visitors are encouraged to report:

  • incorrect results;

  • broken calculators;

  • unclear instructions;

  • outdated references;

  • possible methodology problems;

  • mobile or browser issues;

  • accessibility problems; and

  • suggestions for useful improvements.

Feedback does not automatically result in a change, but legitimate reports are reviewed.

Contact the Admin

Editorial questions, calculator corrections, source suggestions, and technical reports can be submitted through the Contact page or sent to:

support@ajaxcalculators.com

Website: AjaxCalculators.com
Owner & Admin: Arefin Bappy
Role: Owner, Admin, Developer, Author & Reviewer

Our editorial standard is straightforward:

Every calculator should exist to solve a real problem, use an appropriate method, provide useful supporting information, be individually tested, and remain accountable to a real person responsible for its quality.