For example, a person's height is 1.75m, weight is 68kg, and his body mass index is 68/( 1.75)? =22.2 (kg/m？ )
Body mass index (BMI) is a widely used international standard to measure obesity and health status. The standard reference of body mass index: 18.5 is too light; 18.5 to 23.9 are all normal; Overweight between the ages of 24 and 27; Obese at the age of 28 to 32; Very obese over 32 years old.
Extended data
The calculation method of the World Health Organization
Male: (height cm-80)×70%= standard weight.
Female: (height cm-70)×60%= standard weight.
Standard weight plus or minus 10% is normal weight.
Standard weight plus or minus 10%~20% overweight or underweight.
More than 20% of the standard weight is obese or underweight.
Overweight calculation formula
Overweight% = [(actual weight-ideal weight)/(ideal weight) ]× 100%
Baidu Encyclopedia-Weight and Height Index