Press kit.
Everything you need to write about Free BMI Calculator Online in one place: a 300-word media description, an author bio, the story angles journalists actually ask about, and a contact email that lands directly in the inbox of the person who built the site. Use freely with attribution.
Media description (300 words, copy-paste ready)
Free BMI Calculator Online (https://freebmicalculatoronline.com) is a free, privacy-respecting Body Mass Index (BMI) calculator for adults and children, built and maintained as an independent project by Aftab, an AI engineer and fitness coach based in India. The site launched in 2026 as a hobby project and now serves a global audience with 44 crawlable pages, no analytics, no third-party trackers, and no backend. Every calculation runs in the visitor's browser; nothing is stored, transmitted, or sold.
The adult calculator uses the World Health Organization's standard formula and the WHO cut-offs (underweight, normal, overweight, obese, with class I/II/III). The child calculator uses the U.S. Centers for Disease Control and Prevention 2000/2022 extended LMS reference data (438 rows per sex, ages 24–240 months) and the same Box–Cox transformation that the CDC's own SAS macro uses, so the percentile a parent sees on the site matches what their paediatrician would compute.
Each clinical claim is citation-backed to a primary source (WHO Technical Reports, CDC LMS releases, NEJM, the Lancet, NHLBI systematic reviews, NIH pages, ESPEN). A small network of certified clinicians reviews the four most clinical articles; their names and credentials are listed on the /consult/ page.
Variants cover male, female, adult, child, teen, kids, Asian, CDC, metric and imperial units, kg+cm, kg+feet, lb+inches, BMI-by-age and BMI-by-height. Long-form guides cover the BMI formula, the WHO chart, categories, accuracy, vs body-fat, how to calculate, the healthy range, and what BMI actually measures.
The site is ad-light, mobile-first, accessible (keyboard navigation, skip link, ARIA-labelled controls, prefers- reduced-motion respected), and built with Astro 6 and Tailwind v4 — no React, no Vue, no Svelte, no client framework. The source is closed and proprietary; the reviewer data is private.
The story angles
The hooks that journalists and bloggers have actually picked up on:
- The CDC LMS percentile for kids. Most free BMI calculators use a coarse three-band approximation for children. This one ships the real 2000/2022 extended LMS reference and computes the exact percentile using the same formula the CDC SAS macro uses. Useful for parents comparing the site to what their paediatrician would compute.
- The privacy story. No backend, no analytics, no cookies, no third-party requests at runtime. The whole site ships as static HTML/CSS/JS and runs the calculator in the visitor's browser. Useful for health- privacy beat and the post-RGPD / post-HIPAA conversation.
- The named-author E-E-A-T story. A one-person project with a real name, a real photo, real citations, and a small network of certified clinicians who sign off on the clinical claims. Useful for the creator-economy / independent-publisher beat.
- The "what BMI can't tell you" angle. Coverage of the well-known BMI limitations (muscle vs. fat, ethnicity, age, body composition) in the /is-bmi-accurate article. Useful for the long-form explainer-journalism format.
Author bio (short & long)
Short (40 words)
Aftab is the founder of Free BMI Calculator Online, an independent privacy-respecting BMI calculator. He is an AI engineer by day and a self-taught fitness coach with six years of experience, currently working with certified physiotherapists, trainers and doctors with 20+ years of clinical practice. The site is his hobby project.
Long (100 words)
Aftab is an AI engineer and self-taught fitness coach with six years of experience. He builds Free BMI Calculator Online, a free privacy-respecting Body Mass Index calculator for adults and children, in his spare time. The site uses the World Health Organization's standard formula for adults and the U.S. Centers for Disease Control and Prevention's 2000 and 2022 extended LMS reference data for children, so the percentile a parent sees matches what a paediatrician would compute. Every clinical claim is citation-backed to a primary source. He works with a small network of certified clinicians, trainers and physiotherapists with 20+ years of experience who sign off on the most clinical articles. The site is ad-light, has no analytics and ships no third-party requests at runtime.
Site facts (cite with confidence)
- Name: Free BMI Calculator Online
- URL: https://freebmicalculatoronline.com
- Launch year: 2026
- Public pages: 44 (multi-page technique: one URL per variant + per learn-topic)
- Test coverage: 225 end-to-end Playwright tests passing on the production build
- Runtime stack: Astro 6 (static), Tailwind v4, vanilla DOM scripts. No React, no Vue, no Svelte, no client framework.
- Data sources: WHO Technical Reports, CDC 2000/2022 extended LMS releases, NEJM, the Lancet, NHLBI systematic reviews, NIH pages, ESPEN. All references are inline links to the primary source.
- Privacy posture: No analytics, no
third-party requests at runtime, no cookies set by the
site, no backend, no user accounts. The only
localStoragewrites are the calculator state-snapshot (keybmiCalcState:v1) and the device-local reviews widget (per page key). Both are device-local; the server never sees them. - Licence: Closed-source, proprietary, "All Rights Reserved". The reviewer data is private.
Visual assets
High-resolution screenshots of the calculator, the percentile chart, and the article pages are available inline on the live site. For press, the canonical preview image is:
- Open Graph / social card: 1200×630 SVG — download /og.svg
- Favicon (modern): SVG — download /favicon.svg
- Favicon (legacy): 32×32 ICO — download /favicon.ico
- Author photo: 512×512 JPG (Aftab) — download /about/aftab.jpg
Live previews: home · charts · about · reviewer network.
Contact
For interview requests, fact-checks, corrections, or partnership enquiries, write directly to:
Or use the contact form with topic Press or partnership — the message lands in the same inbox.
What this site is not
- Not medical advice. The site is a calculator and a learning resource. It is not a diagnostic tool. The footer on every page reads: "For information only — not medical advice."
- Not a clinical guideline source. Clinical decisions should reference the WHO and CDC primary publications, not this site. The site links to those primary publications from every clinical claim.
- Not a replacement for a clinician. Especially for children, pregnant people, athletes, and older adults, BMI is one signal among many. The site spells this out on /is-bmi-accurate and /healthy-bmi-range.
Corrections policy
If you spot a factual error, a broken citation, or a calculation that doesn't match the cited primary source, email codemindsx@gmail.com or use the contact form. Corrections are shipped within 48 hours; significant corrections are noted in a "Last reviewed" timestamp on the affected page.