BMI Calculator
Runs locallyCalculate your Body Mass Index in metric or imperial units, with WHO category feedback.
Your BMI
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Enter your height and weight in metric or imperial units and get your BMI instantly, along with the WHO weight category it falls into and the healthy weight range for your height. Nothing is stored or sent anywhere.
Frequently asked questions
What do the BMI categories mean?
WHO classes: below 18.5 underweight, 18.5–24.9 normal, 25–29.9 overweight, 30 and above obese. The tool also shows the healthy weight range for your height.
Is BMI accurate for everyone?
It is a screening shortcut, not a diagnosis — it cannot distinguish muscle from fat, so athletes, pregnant people and the elderly should read it with caution.
Metric or imperial?
Both. Enter cm/kg or ft-in/lb — and nothing you type is stored or sent anywhere.