BMI Calculator

Body Mass Index (BMI) is your weight in kilograms divided by the square of your height in meters. It provides a quick estimate of body fat and classifies you into underweight, normal, overweight, or obese categories based on standard thresholds.

The Ponderal Index divides weight by the cube of height (kg/m³) instead of the square. A normal range is 11 to 15. It provides a more height-independent measure of body composition, especially useful for very tall or very short individuals.

BMI thresholds are designed for adults aged 20 and older. For children and teens under 20, age-specific growth charts should be used instead. Gender can influence body fat distribution, though the standard BMI category ranges apply equally to adult men and women.

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BMI is a useful screening tool for general populations but does not measure body fat directly. It may overestimate fat in athletes with high muscle mass and underestimate it in older adults. For a complete health assessment, consult a healthcare professional.