International aesthetic plastic surgery (Iplast)., also called Plastic Surgery Calculator or Iplast app. is a mobile application (app.) specially configured to calculate the body mass index (BMI) of women and men who wish to perform an aesthetic plastic surgery procedure on their body.

Relating age, weight and height, it calculates the real BMI of the patient, identifies which options would be feasible for each case, classifies to which degree their BMI belongs, what their ideal weight would be and in case of being overweight, identifies how many kilograms (kg) or pounds (lb) you need to lose to be in the proper range.