BMI (Body Mass Index) is an internationally used indicator to measure obesity using height and weight. The formula is weight(kg) ÷ height(m)².

Below 18.5 is underweight, 18.5-24.9 is normal weight, 25-29.9 is overweight, and 30 or above is obese. However, since BMI doesn't consider muscle mass, it's best used as a reference indicator.

Yes, this calculator supports both metric (cm, kg) and imperial (feet, inches, pounds) units. You can automatically convert between units with the toggle button.