Free BMI calculator: enter height and weight to estimate your body mass index and its WHO weight category. A general estimate only, not medical advice. 100% Local
How to Use the BMI Calculator
Enter your height in centimetres and your weight in kilograms and press Calculate BMI. The result updates as you type.
How BMI is calculated
BMI = weight (kg) ÷ height (m) squared.
Categories follow the common WHO adult ranges: below 18.5, 18.5–24.9, 25–29.9 and 30 or above.
BMI is a rough screening figure. It does not tell muscle from fat or account for body build.
Features
Body mass index to one decimal place
WHO adult weight category (under, normal, over, obese)
Standard metric formula with two simple inputs
All processing runs locally in your browser. Your data is not uploaded to any server.
This is a general estimate, not a medical diagnosis or advice.