About InstantBMI
Welcome to InstantBMI — your simple, private, and free tool to calculate your Body Mass Index without any sign-up or data tracking.
Why We Built This
We believe health tools should be accessible to everyone — without barriers. That's why we created a BMI calculator that works instantly, requires no registration, and respects your privacy.
How It Works
- ✅Enter your height and weight — that's it.
- ✅Instantly see your BMI result with category (Underweight, Normal, Overweight, Obese).
- ✅No servers involved — calculation happens 100% in your browser.
- ✅No cookies, no tracking, no analytics — we don't even know you visited.
Your Privacy Matters
We do not collect, store, or transmit any personal data. Not your height, not your weight, not your IP address. Everything you enter stays on your device. Period.
This is a true zero-data website.
Built For Everyone
Whether you're on a desktop, tablet, or phone — our calculator works flawlessly. No sign-up. No ads. No nonsense.
Use it as often as you like. Share it with friends. Bookmark it. It's free — forever.