To determine the ideal weight, it is customary to calculate the BMI (Body Mass Index). The BMI is body weight in relation to body size.

Another value to determine the ideal weight is the WHR. WHR is the abbreviation of "Waist to Hip Ratio" and literally means "waist to hip ratio".
The WHR is thus an attempt to determine the distribution of body fat on waist and hip in addition to pure weight. Sits at the waist rather the fat ("apple shape") or at the hips ("pear shape")?
In addition to the WHR, there is the waist size ratio "Waist to Height Ratio" (WHtR), which will also allow for the estimation of body fat distribution.