Spine width calculator

The spine calculations are for most people a confusing element. We have made a guideline tool for you to easily calculate the spine based on the paperweight, paper type, and cover type.

Get the formula to calculate the spine width here: How to calculate spine width


Select paperweight, paper type, cover type and page count, then click 'Calculate'.


Paper type

Cover type

Page count


__ mm / __ inch


This spine width calculation uses average bulk values. The characteristics of the paper used by different print partners may vary.

Case Wrap books mostly use pre-cut cardboard in the spine. The cardboard is therefore in a number of fixed sizes. These sizes may vary between print partners.