BMI Calculator

Body Mass Index (BMI) is a numerical value calculated from your weight and height. It is a widely used screening tool to categorize individuals as underweight, normal weight, overweight, or obese.

A BMI between 18.5 and 24.9 is considered normal or healthy weight for most adults. However, BMI is a screening tool, not a diagnostic measure. Other factors such as muscle mass, age, and ethnicity can affect the interpretation.

Yes. BMI does not directly measure body fat. Athletes may have a high BMI due to muscle mass but low body fat. Elderly individuals may have normal BMI but high body fat. It is best used alongside other health assessments.

BMI does not account for fat distribution, muscle mass, bone density, age, or sex differences in body composition. It should not be used as the sole indicator of health status.

For adults, fixed BMI ranges are used. For children and teens, BMI is age- and sex-specific and expressed as percentiles, since body fatness changes with age and differs between boys and girls.

You can reduce BMI by losing weight through a combination of a calorie-controlled diet and regular physical activity. Sustainable changes of 500-750 calories per day deficit can lead to gradual, healthy weight loss.