It is generally believed that the standard weight of women is: height (cm)- 105 = standard weight (kg).

For example, for a woman whose height is 160 cm, her standard weight should be160 (cm)-105 = 55 (kg). People who exceed the standard weight 10% are overweight, those who exceed the standard weight 20% are obese, those who are below 10% are emaciated, and those who are below 20% are emaciated.

Generally speaking, the standard weight of men is: height (cm)- 100 = standard weight (kg).

For example, a man with a height of 170cm should weigh170 (cm)-100 = 70 (kg). People who exceed the standard weight 10% are overweight, more than 20% are obese, less than 10% are emaciated and less than 20% are emaciated.

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.