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

Body Mass Index (BMI) is an important international standard to measure the degree of obesity and health, which is mainly used for statistical analysis. The absolute value of weight can not be used to judge the degree of obesity, which is naturally related to height. Therefore, BMI obtains relatively objective parameters through two values of human body weight and height, and uses the range of this parameter to measure body quality.

Extended data

BMI figure reference

The world standard of obesity is: BMI is in the normal range from18.5 to 24.9, BMI greater than 25 is overweight, and BMI greater than 30 is obesity.

Asian standard of obesity: Asians are too small to be measured by the world standard of obesity. The obesity standard of Asians should be that BMI is normal at18.5-22.9, BMI greater than 23 is overweight, and BMI greater than 30 is obese.

China standard of obesity: 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 suggested that the best value of China people's body mass index should be 20-22, with a BMI greater than 22.6 as overweight and a BMI greater than 30 as obesity.