BMI

BMI Calculator

Work out your Body Mass Index from height and weight, in either metric (cm/kg) or imperial (ft-in/lb) units, using the standard WHO formula.


BMI categories (WHO standard, adults)

BMICategory
Below 18.5Underweight
18.5 – 24.9Normal weight
25.0 – 29.9Overweight
30.0 and aboveObese

BMI is a simple screening measure, not a diagnosis — it doesn't distinguish muscle from fat and can be misleading for athletes, older adults, or during pregnancy. Talk to a doctor for a proper health assessment.