Body Mass Index (BMI) is a numerical value derived from a person's weight and height. It is widely used to classify whether a person is underweight, normal weight, overweight or obese.
BMI helps doctors and health professionals quickly assess whether a person has a healthy body weight relative to their height.
BMI = Weight (kg) / Height² (m)
Weight = 70 kg
Height = 1.75 m
BMI = 70 ÷ (1.75 × 1.75) = 22.86
A healthy BMI typically falls between 18.5 and 24.9.
BMI is a useful screening tool but it does not directly measure body fat. Other factors like muscle mass may affect BMI results.