The Atomic Mass Calculator (The AMC) is a useful tool for anyone needing to calculate molecular mass quickly and easily. This is an interactive calculator using the periodic table as its key pad. Press the elements in any order to form those molecules only you can dream up. Press calculate to see the atomic mass for that molecule. The AMC will also give the breakdown of how many of the same elements were used, the percentage of each element used (based on weight) for the molecule, and the weight of all like elements for the molecule. The Atomic Mass Calculator will also tallied the total weight for the entire molecule. The AMC will also allow you to email the report from the app.