Editorial Policies
Our Commitment to Accuracy
At Bro Calculator, every calculator and every piece of supporting content on this site exists for one reason: to give you a correct, reliable answer as quickly as possible. We take that responsibility seriously. A wrong calculation on a construction site costs money. A wrong GPA calculation causes unnecessary stress. A wrong physics formula produces an incorrect result that someone might actually use. We do not treat accuracy as optional.
This page explains exactly how we create content, who creates it, how it gets checked, and what we do when something turns out to be wrong.
1. Who We Are
Bro Calculator is a free online calculator resource covering eleven categories: Math, Construction, Conversion, Everyday, Time, Education, Statistics, Physics, Sports, Tech, and Gaming. Every calculator on this site is built to run instantly in your browser with no account, no subscription, and no hidden steps.
Our content team consists of ten subject matter contributors, each assigned to specific categories based on their professional background and academic qualifications. Every author page on this site includes their full name, educational background, areas of expertise, and a list of calculators they have contributed to. You can meet the full team on our Authors page.
2. Our Editorial Principles
Every piece of content published on Bro Calculator is held to four core principles:
Accuracy first. Every formula used in our calculators is verified against published sources before the page goes live. We do not publish a calculator page until the formula has been checked manually and the output has been tested against known correct results.
Clarity over complexity. Our job is to make calculations accessible, not to demonstrate how complicated the subject can be. If an explanation requires a mathematics degree to follow, we rewrite it until it does not.
Honest scope. Every calculator page covers what a real user actually needs to know to use that tool effectively. We do not pad pages with advanced academic content that falls outside the practical scope of the calculator.
Human written, human checked. Every word on this site is written by a real person with relevant knowledge and checked by another real person before it is published. We do not use artificial intelligence to generate calculator content or supporting articles.
3. How We Create Content
Every calculator on Bro Calculator goes through a structured creation process before it is published. That process works as follows:
Step 1: Formula Research and Verification
The assigned author identifies the correct formula for the calculator from established sources. Depending on the category, these sources include published textbooks, academic institutions, recognised industry standards such as ACI standards for concrete calculations, NASM guidelines for fitness metrics, and NIST references for mathematical and scientific formulas. The formula is documented with its source before any content is written.
Step 2: Calculator Testing
Before the supporting content is written, the calculator itself is tested using manually computed results. The author works through a minimum of three separate input scenarios by hand and checks each result against the calculator output. If the outputs do not match the manual calculations, the formula is reviewed and corrected before the page moves forward.
Step 3: Content Writing
The author writes the supporting content for the calculator page. This includes a plain language explanation of what the calculator does, the formula used and how it works, worked examples using real numbers, answers to the most common questions users have about the topic, and where relevant, practical context drawn from the author's professional experience.
Step 4: Accuracy Review
A second team member with relevant subject knowledge reviews the completed page. The reviewer checks the formula, tests the calculator independently, fact checks any figures or claims in the content, and confirms that the examples produce correct results. The page is not published until the reviewer is satisfied that every element is accurate.
Step 5: Editorial Review
The page is reviewed for clarity, readability, and consistency with our editorial standards. This includes checking that the language is accessible, the structure is logical, the headings are clear, and the content covers what a real user needs without unnecessary padding.
Step 6: Publication
Once the page passes all review stages it is published with the contributing author credited by name. The publication date is recorded and the page is scheduled for periodic review to ensure the content remains current and accurate.
4. Our Authors
Every calculator page on Bro Calculator credits the author who wrote and verified it. Author credits appear at the bottom of each calculator page and link to the author's full profile, which includes their educational background, professional experience, areas of expertise, and a complete list of calculators they have contributed to.
Our authors are assigned to categories that match their qualifications. Examples include:
- Construction and Conversion calculators are written and reviewed by authors with civil or mechanical engineering backgrounds.
- Math and Statistics calculators are written and reviewed by authors with mathematics education or data science backgrounds.
- Sports and Everyday calculators are written and reviewed by authors with kinesiology, exercise science, or relevant professional experience.
- Physics and Tech calculators are written and reviewed by authors with physics or computer science backgrounds.
- Education and Time calculators are written and reviewed by authors with academic advising or educational psychology backgrounds.
You can view the full profile of every author on the Bro Calculator Authors page.
5. Sources and References
We cite our sources. Where a formula or factual claim in our content is drawn from a specific published source, that source is referenced within the page content or linked directly. We do not make claims we cannot support with a verifiable reference.
Primary sources we draw on across our categories include:
- American Concrete Institute (ACI) standards for construction calculations
- National Academy of Sports Medicine (NASM) guidelines for fitness and sports metrics
- National Institute of Standards and Technology (NIST) for mathematical and scientific references
- Published university textbooks for mathematics, physics, and statistics content
- Khan Academy documented formulas for educational mathematics content
- ISO and ASTM standards for conversion and measurement calculations
6. Corrections Policy
We are committed to correcting errors quickly and transparently when they are identified.
If you believe a calculator is producing an incorrect result, or that information on a page is inaccurate, please contact us at [email protected] with the following details:
- The URL of the page in question
- The specific input values you used
- The result you received
- What you believe the correct result should be and why
Every correction request is reviewed within two business days. If the error is confirmed, it is corrected within 24 hours of confirmation and the page is updated with a revised review date. We do not quietly fix errors without acknowledging them. If a correction is made to a published page, the update is noted in the page footer with the date it was corrected.
7. Content Updates and Review Schedule
Calculator formulas and supporting content are reviewed on a rolling basis. Pages covering topics where standards or guidelines may change over time, such as health metrics, financial calculations, and measurement conversion standards, are prioritised for regular review.
Every page on Bro Calculator displays the date it was last reviewed. If you notice that a page has not been reviewed recently and you have reason to believe the content may be outdated, please contact us using the details on our Contact page.
8. Feedback
We read every piece of feedback we receive. If you have a suggestion for a new calculator, a question about how an existing one works, or a concern about the accuracy of any content on this site, you can reach us through our Contact page.
We built Bro Calculator because we believe everyone deserves access to fast, reliable calculations without having to navigate paywalls, sign up for accounts, or wade through inaccurate results. Feedback from real users is the most direct way we have of knowing whether we are living up to that.