Calculate your Body Mass Index in seconds. Supports both metric (kg/cm) and imperial (lbs/in) units. See your category and healthy weight range for your height.
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your result appears here.
Select metric (kg/cm) or imperial (lbs/in).
Use the slider or type your weight directly.
Enter height in centimetres or inches.
See your score, category, and healthy weight range for your height.
Imperial: BMI = 703 × Weight(lbs) ÷ Height(in)²
BMI is a screening tool — not a diagnostic measure. It does not account for muscle mass, bone density, age, or ethnicity.
18.5 to 24.9 is considered normal weight for adults according to WHO guidelines. Below 18.5 is underweight, 25–29.9 is overweight, 30+ is obese.
No. Muscle weighs more than fat. A muscular person may have a high BMI but very low body fat. BMI is a population-level screening tool, not individual diagnosis.
For children, BMI is age and sex-specific (BMI-for-age) and interpreted using growth charts, not the adult ranges used here.
Using the normal BMI range (18.5–24.9), healthy weight = 18.5 × 1.70² to 24.9 × 1.70² = 53.5 kg to 71.9 kg.