Hey Product Hunt 👋 Maker here. I built YourBodyCalc because the existing calculator sites (calculator.net, omnicalculator) felt like 2010 internet: cluttered, ad-heavy, machine-translated, and assuming everyone reads English. What's different: 🌍 9 languages with REAL translation (en/es/pt-BR/de/fr/it/ja/ko/id) — not Google Translate. Numbers format per locale (de "1.234,5", fr "1 234,5", ja "1,234"). The Japanese BMI calc has a JASSO toggle (Japan's stricter standard, threshold 25) on top of WHO. 🧮 14 calculators built on cited primary sources — WHO, NIH, IOM 2009, ACOG, Mifflin-St Jeor, Kemenkes RI. Each formula is a pure function with vitest coverage. Pregnancy weight gain returns "insufficient data" for underweight twins because IOM 2009 has no guidance there — felt important not to invent numbers in YMYL space. 📱 Mobile-first PWA. Works offline. No account. No upload. Calculations happen entirely in your browser — your weight/height never leaves your device. 🔌 Embed widget: drop any calculator into your blog/site with one iframe tag. Free for any use. Footer attribution is rel="nofollow" so it stays compliant with Google's widget-link policy. Honest about the limits: - DA is ~0 (just deployed), this launch is the first real distribution push - I'm not a medical professional; every YMYL page disclaims that explicitly - I'm a solo operator using AI assistance, so feedback shapes what ships next What I'd love feedback on: 1. Embed UX — is the copy-snippet flow obvious? 2. JASSO toggle — useful niche or feature creep? 3. Any calculator you actually use that's missing? Stack: Next.js 16 App Router · TypeScript · Tailwind v4 · next-intl · recharts · sharp. Deployed on Vercel + Cloudflare DNS. Happy to answer anything.

YourBodyCalc

14 health calculators · 9 languages · no signup · offline

14 health calculators · 9 languages · no signup · offline