Because people's weight is related to many factors, there are differences between different people, and there will be certain changes at different times of the day. In addition, geographical location (such as gravity), season, climate and differences in their own situation also have a certain impact on weight.
So it is difficult to reach the standard weight completely. In other words, it is difficult to express it with a constant value, but it should be a range of values. We call this numerical range a normal value, which is generally within 10% of the standard weight.
Standard formula of height and weight
1, calculation method 1:
Body mass index = square kilogram of body weight/square meter (kilogram)/height (meter)
Formula writing: body mass index = weight/(height) 2
Normal weight: body mass index = 18.5-25 (China physical health standard: normal range: 18.5~23.9, overweight 24.0~27.9, obesity ≥28.0).
Overweight: body mass index = 25-30.
Mild obesity: body mass index > 30
Moderate obesity: body mass index > 35
Severe obesity: body mass index > 40
2, calculation method 2:
Standard weight = height (m) × height (m) × standard coefficient (female 20, male 22)
Standard weight plus or minus 10% is normal weight.
Standard weight plus or minus 10%~20% is overweight or underweight.
A standard weight of plus or minus 20 or above is obesity or underweight.