How BMI Is Calculated

Body Mass Index (BMI) is a widely used screening measurement that estimates whether body weight falls within standard healthy ranges relative to height.

BMI Formula

BMI = weight (kg) ÷ height² (m²)

Example BMI Calculation

If a person weighs 80 kg and has a height of 1.75 m:

1.75 × 1.75 = 3.06
80 ÷ 3.06 = 26.1 BMI

Standard BMI Categories

Underweight
Healthy weight
Overweight
Obesity ranges

Limitations of BMI

BMI does not directly measure body composition, muscle mass, or overall health status.

Healthcare professionals may use additional measurements and medical assessments alongside BMI.