BMI Calculator
Enter your height and weight to calculate your Body Mass Index (BMI) and see which standard WHO category it falls into.
BMI is a general screening measure and doesn't account for muscle mass, bone density, age, or sex — it's not a diagnosis. For a personal health assessment, talk to a doctor or healthcare provider.
Frequently Asked Questions
How is BMI calculated?
BMI = weight in kilograms ÷ (height in meters)² — the standard formula used by the World Health Organization.
What are the BMI categories?
Under 18.5 is underweight, 18.5–24.9 is normal weight, 25–29.9 is overweight, and 30 or above is obese, per WHO's standard adult classification.
Is BMI accurate for everyone?
No — it doesn't distinguish muscle from fat, and isn't designed for children, pregnant women, or very muscular individuals. It's a general population screening tool, not an individual diagnosis.