Height cm  Weight kg  

Height 130 weight 45
What is the ideal weight for 130 cm tall male or female? Is it normal to weigh 45 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 1.3 meters (130 cm) and for the weight 45 kilograms:  

Result:  Overweight (not obese). 
BMI:  26.63 
Normal weight limits:  31  42 kg. 
What to do?  Lose 3 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 1.76 (not 176).
 Multiplication first, then division!  For example, if the height is 177 cm and the weight is 54 kg, then BMI = 54 / 1.77 * 1.77 = 17.24. BMI below normal values
Check yourself. The Height and weight combinations below are normal or not?