BMI Calculator
Calculate your body mass index and see the healthy weight range for your height.
kg
cm
lb
ft
in
—BMI
—Category (WHO)
—Healthy weight for your height
Underweight < 18.5Healthy 18.5–24.9Overweight 25–29.9Obesity ≥ 30
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How it works
BMI = weight (kg) ÷ height (m)². The World Health Organization categories for adults are: underweight below 18.5, healthy weight 18.5–24.9, overweight 25–29.9 and obesity 30 and above. BMI is a quick screening number: it doesn't distinguish muscle from fat, and it isn't meant for children, pregnant women or very muscular people. Ask a health professional for a real assessment.
FAQ
Is BMI the same for men and women?
Yes, the adult formula and categories are the same. For children and teens, doctors use age- and sex-specific percentiles instead.