About the Author - Oihan Mora

Oihan Mora

Founder & Editor, FastBMI

🇪🇸 Spain

✉ oihanmora@gmail.com 🏠 About FastBMI 💬 Send a message

I’m Oihan Mora, the founder and editor of FastBMI. I created this site because I wanted a fast, honest, ad-free-feeling resource where anyone could check their BMI, understand what the result actually means, and find reliable, evidence-based context — without wading through medical jargon or sensationalist health claims.

I’m not a medical professional. What I am is someone who has spent years frustrated by health websites that either hide behind walls of caveats or, worse, make bold promises about weight and body image that no reputable organization backs. FastBMI is my answer to that: transparent, tool-first, grounded in WHO and CDC guidelines, and honest about the limits of any single metric.

How content is created at FastBMI: All formulas and reference ranges on this site are derived from publicly available guidelines published by the World Health Organization (WHO), the U.S. Centers for Disease Control and Prevention (CDC), and the National Institutes of Health (NIH). Each guide and article cites its sources directly. Content is reviewed periodically and updated when guidelines change.

Why I built FastBMI

The original motivation was simple: I wanted a BMI calculator that worked instantly on mobile, showed me not just a number but a healthy weight range and some context, and didn’t require me to sign up for anything. That tool grew into a broader platform covering calorie needs, body fat estimation, ideal weight ranges, and educational articles on how to interpret all of these numbers.

Every calculator on the site uses published, peer-reviewed formulas (Mifflin-St Jeor for BMR, WHO categories for BMI, etc.) and is explicit about which formula it uses and why. I believe in showing the math.

What FastBMI is — and what it is not

It is a free educational resource for health metrics, built on publicly available scientific guidelines.
It is transparent about how its calculations work, citing the formulas and their sources.
It is not a substitute for professional medical, dietetic, or clinical advice.
It does not endorse any diet, supplement, medication, or treatment plan.
It does not store your personal health data — all calculations happen in your browser.

Medical disclaimer: The tools and articles on FastBMI are for informational and educational purposes only. They do not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional before making changes to your diet, exercise routine, or health management plan.

Get in touch

If you spot an error in a calculator, find a broken link, have a content suggestion, or want to discuss a correction to any health information on this site, I’d genuinely love to hear from you. I read every message personally.

Email: oihanmora@gmail.com
Or use the contact form.

Editorial & Review Process

FastBMI follows a consistent editorial process for all content:

Sources first: Every article and calculator starts from primary sources — WHO guidelines, CDC fact sheets, NIH publications, or peer-reviewed research available through PubMed.
Formulas are cited: Where a calculator uses a specific formula (e.g., Mifflin-St Jeor for BMR), that formula is named, shown, and linked to its original publication.
Limits are stated: No tool on this site claims to be diagnostic. Each page explains what the metric can and cannot tell you.
Corrections welcome: If you find an error, report it to oihanmora@gmail.com and it will be reviewed and corrected promptly.
Regular review: Content is reviewed when WHO or CDC guidance changes, or at minimum once a year.

For full details, see our Editorial Policy and How We Test Calculators pages.