BMI Calculator
Calculate your Body Mass Index and see where it falls relative to standard weight categories.
Your measurements
Your BMI
22.9Normal
Healthy weight range for your height
56.7 – 76.3 kg
BMI is a screening tool, not a diagnosis — it doesn't distinguish muscle from fat and isn't reliable for athletes, pregnant people, or children. Talk to a healthcare provider for a full assessment.
How this is calculated
BMI = weight(kg) ÷ height(m)². Categories follow the WHO adult classification: Underweight <18.5, Normal 18.5-24.9, Overweight 25-29.9, Obese ≥30.
Pricing is verified against provider pricing pages as of 2026-09-01. AI and cloud pricing changes frequently — confirm the current rate on the provider's own pricing page before budgeting.
Frequently asked questions
What is BMI?
Body Mass Index is a screening measure that relates your weight to your height (weight ÷ height²), used as a quick, population-level indicator of whether weight falls in a range associated with health risk.
What are the BMI categories?
Under 18.5 is Underweight, 18.5-24.9 is Normal, 25-29.9 is Overweight, and 30+ is Obese — the WHO's standard adult classification, used by this calculator.
Is BMI accurate for everyone?
No — BMI doesn't distinguish muscle from fat, so it can misclassify very muscular people as overweight, and it isn't designed for children, pregnant people, or the elderly, whose body composition differs from the general adult population BMI was calibrated on.
What should I do if my BMI is outside the normal range?
Treat it as a starting point for a conversation, not a diagnosis — a healthcare provider can assess body composition, health markers, and personal risk factors far more accurately than BMI alone.