For example, a person weighs 85kg, height 1.75m, BMI = 85/(1.75 *1.75) = 27.76. According to the BMI of adults, underweight is lower than 18.5, normal is 18.5-23.9, overweight is 24-27, and obesity is 28-32. Therefore, the height BMI index of 1 m 75 is 24.49, which is overweight but not obese, but it is only for reference because it is under 18 years old.
Calculation method of WHO standard weight
Male: (height cm-80)×70%= standard weight.
Female: (height cm-70)×60%= standard weight.
Standard weight plus or minus 10% is normal weight;
The standard weight plus or minus 10%~20% is overweight or underweight;
More than 20% of the standard weight is obese or underweight.
Reference to the above content? Baidu Encyclopedia-Standard Weight