For example, body mass index (BMI) is about 22, which is the most standard. Body mass index = weight (kg)/height (m) squared. 22 is the most standard.

The method of calculating the standard weight by 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.

Obesity or underweight is defined as plus or minus 20% of standard weight.

Another new standard weight calculation: standard weight = height (m) × height (m) ×22.