Nowadays the most common way to find out, if you have overweight, normal weight, or underweight is the calculation of the Body Mass Index (BMI). The BMI Index has almost substituted the well known Broca - formula: normal weight = body seize (cm) - 100 simply because it is too general. For your doctor, traditional healer or your health insurance the BMI  is more important. 
For the calculation of the BMI please enter your weight and your seize.

The BMI is calculated by the body weight (kg) divided by the square of the body seize (m2).
The formula is: 

BMI = Body weight / (body seize in m2)²

The desirable body weight depends on your age and sex. The following tabulations provide a survey:

BMI - classification (according to nutrition memorandum 1992)