BMI or Body mass index is a measure of calculating a person’s excess weight.

It is calculated by the following formula:

                                                            Weight (in Kg) 
                                  BMI=      -------------------------------------
                                                    Height (in m)* Height (in m)
        
                     
                                         Healthy Range   =  18.5 to 25
                                         Overweight        =  25 to 30
                                         Obese               =  30 to 40
                                         Severely obese = morethan 40