What does body mass index mean?

Body mass index Body mass index = weight/height squared (international unit kg/㎡)

For example: weight 85kg, height 1.75m, body mass index = 85/(1.75 *1.75) = 27.76.

Body mass index (BMI) is an important international standard to measure the degree of obesity and health status, which is mainly used for statistical analysis. The absolute value of weight can't be used to judge the degree of obesity, and the degree of obesity is naturally related to height. Therefore, the body mass index (BMI) obtains a relatively objective parameter through the two values of human body weight and height, and measures the physical quality by the range of this parameter.

Extended data

Body mass index graphic reference

The world standard of obesity is that the body mass index is in the normal range of 18.5 to 24.9, the body mass index greater than 25 is overweight, and the body mass index greater than 30 is obese.

Asian obesity standard: Asians are too young to be measured by the world obesity standard. The obesity standard of Asians should be that the body mass index is normal at 18.5-22.9, the body mass index greater than 23 is overweight, and the body mass index greater than 30 is obese.

China obesity standard: Although China people belong to Asian race, the upper limit of the normal range of body mass index should be lower than the Asian standard. Some experts suggest that the best value of China people's body mass index should be 20-22, with a body mass index greater than 22.6 as overweight and a body mass index greater than 30 as obesity.