BMI
BMI Calculator
Your body mass index from your height and weight, and the WHO band it falls in.
Result…
How it's calculated
BMI = weight (kg) ÷ height (m)² Imperial: BMI = 703.07 × weight (lb) ÷ height (in)² WHO bands: under 18.5 underweight · 18.5–24.9 healthy · 25–29.9 overweight · 30+ obese
BMI compares weight with height and sorts adults into the World Health Organization bands. It is a quick screen for populations, not a diagnosis: it cannot tell muscle from fat, so athletes can read high, and it is not used for children (who use age percentiles) or in pregnancy.
Your numbers, step by step
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