BMI Calculator
Body Mass Index with the WHO/CDC adult category and the healthy weight range for your height.
Free to use · No account required
Enable JavaScript to use the interactive BMI Calculator. The input fields and calculations run in your browser.
How it works
BMI = weight (kg) ÷ height (m)². Imperial: BMI = 703 × lb ÷ in². Adult categories (WHO/CDC): under 18.5 underweight · 18.5–24.9 healthy · 25–29.9 overweight · 30+ obesity (Class I 30–34.9, II 35–39.9, III 40+).