BMI Calculator

Body Mass Index from height and weight.

Units

US (ft/in, lb) Metric (cm, kg)

Height — feet

Height — inches

Weight

Your BMI

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About this calculator

BMI categories: below 18.5 underweight, 18.5–24.9 normal, 25–29.9 overweight, 30+ obese. BMI does not account for muscle mass, frame size, or body composition — use it as a general screening tool only.