BMI Calculator
Enter your height and weight to get your body mass index, your weight category, and the healthy weight range for your height.
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Formula: Mifflin-St Jeor (1990). General fitness information, not medical advice.
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How BMI works — and its limits
BMI compares your weight to your height on a single scale used by health agencies worldwide: under 18.5 is classed underweight, 18.5–24.9 normal, 25–29.9 overweight, and 30+ obese. It's a quick population-level screen, not a body-fat measurement — muscular people often score 'overweight' with low body fat, and it can miss low muscle mass in others. Use it as one general guideline alongside waist size and how you feel, not as medical advice or a diagnosis.