Adult BMI Calculator

Calculate body mass index using your height and weight. This calculator uses metric measurements and is intended for adults aged 20 years and older.

Calculate BMI

Your Result

Enter your measurements to calculate BMI.

BMI is a screening measurement and should not be used by itself to diagnose a medical condition.

How BMI is calculated

Body mass index is calculated by dividing weight in kilograms by height in meters squared.

BMI = Weight (kg) / Height (m)²

Understanding BMI

BMI relates body weight to height, but it does not directly measure body composition. Other factors are important when evaluating an individual's health.

Reference

CDC — Adult BMI Calculator