BMI Calculator

Body Mass Index (BMI) is a measure of body fat based on your weight relative to your height. It is calculated by dividing your weight in kilograms by the square of your height in meters (kg/m²). BMI is widely used as a quick screening tool for weight categories.

The standard BMI categories are: Underweight (below 18.5), Normal weight (18.5 to 24.9), Overweight (25.0 to 29.9), and Obese (30.0 and above). These ranges apply to adults aged 20 and older.

BMI Prime is the ratio of your BMI to the upper limit of the normal BMI range (25). A BMI Prime of 1.0 means you are at the upper boundary of normal weight. Values below 1.0 indicate normal or underweight, while values above 1.0 indicate overweight or obese.

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BMI is a useful general screening tool but does not directly measure body fat. It may overestimate fat in muscular individuals and underestimate it in older adults. For a comprehensive health assessment, consult a healthcare professional who can consider additional factors.