Plastic Mold Calculator (PMC) PMC is the best app to calculate the mold cost and the easy app to calculate the final mold price. The app includes. 1- Mold type , circulaer or rectangular so you can comper each weight and select the lowest weight. 2-The app allows you to input the size of the platesmanually including its price per kg. 3-You can fill all plates size automaticlay by selectin "Suggest other plates" so the app will give you great app based on our experince as the following a-The Fix