Body fat% = 1.2× body mass index? +0.23× age -5.4- 10.8× gender (the gender value of male is 1 and that of female is 0). )

Body mass index Body mass index = weight/height squared (international unit kg/㎡).

The normal body fat rate of men is about 10 ~ 20%, and that of women is about 17 ~ 30%. This is the standard value for adult men and women. Women are over 50 years old and men are over 55 years old. The standard value of body fat percentage can be increased by 2%-3% every 5 years.

Extended data:

Body fat rate refers to the percentage of body fat to body weight. In the past, the easiest way to judge whether a person is fat or thin is to use the height-to-weight ratio (that is, body mass index, weight divided by the square of height).

However, this method tends to ignore the amount of human fat. Therefore, to judge a person's true obesity, besides using body mass index as a reference index, it is also necessary to detect body fat rate, so that the result will be more objective.

Reference: Baidu Encyclopedia-Body Fat Rate