Height cm  Weight kg  

Height 191 weight 62
What is the ideal weight for 191 cm tall male or female? Is it normal to weigh 62 kg for this height? Body Mass Index (BMI) will answer these questions. If BMI value is within the range 18.5 – 24.99 (for any height), then the weight is withing normal limits.
For the height 1.91 meters (191 cm) and for the weight 62 kilograms:  

Result:  Lack of weight. 
BMI:  17 
Normal weight limits:  67  91 kg. 
What to do?  Gain 5 kg. 
How to calculate BMI and weight ranges on your own?
 BMI formula: weight / height^{2}
 where the height value is in meters (not in centimeters), for example 1.6 (not 160).
 Multiplication first, then division!  For example, if the height is 174 cm and the weight is 81 kg, then BMI = 81 / 1.74 * 1.74 = 26.75. BMI above normal values.
Check yourself. The Height and weight combinations below are normal or not?