BMI Calculator
Check your Body Mass Index and what it means for your health
BMI Categories
What BMI Means (and Doesn't Mean)
BMI is a screening tool, not a diagnosis. It cannot distinguish between muscle and fat — a bodybuilder and an obese person can have the same BMI. For a more complete picture, also check your waist circumference (men under 40 inches, women under 35) and body fat percentage.
FAQ
Is BMI accurate?
For populations, yes. For individuals, it is a rough guide. Athletes with high muscle mass may show as "overweight" despite being healthy. Waist-to-height ratio is often a better individual predictor of health risk.
What is a healthy BMI?
18.5-24.9 is considered normal weight. However, the lowest mortality risk is actually around BMI 22-25. Being slightly "overweight" by BMI (25-27) is not associated with increased mortality in most studies.