INKISH.CALC calculates the weight of your printed product - not just based on standard values but on actual paper that you easily can select from the world’s maybe largest paper database PaperDb. This means that you not only enter grammage and number of pages but also actual paper used. You can even give your calculation a name and save it so it is easier for you to retrieve these and make changes in case you need to. INKISH.CALC also calculates the spine.