BMI Calculator
Body mass index with categories
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About the BMI Calculator
Calculate your Body Mass Index from height and weight in metric (cm/kg) or imperial (ft/lb) units. Get your BMI value, WHO category (underweight, normal, overweight, obesity), and a visual scale showing where you fall. A quick screening check — not medical advice.
How to use
- 1Choose metric or imperial units.
- 2Enter height and weight.
- 3Read your BMI, category, and position on the scale.
FAQ
What is a normal BMI?
WHO classifies 18.5–24.9 as normal weight, 25–29.9 as overweight, and 30+ as obesity. BMI doesn't account for muscle mass — treat it as a rough screen.
Related Everyday Life tools
BMI Calculator is part of DevKit — 100 free, privacy-first tools for developers, students, and everyone, built by Minhazul Ashim. Everything runs in your browser; your data never leaves your machine.