Spine thickness calculator

The calculator below gives you the possibility to calculate the width of the spine that your book will have. To calculate the spine width, enter the number of pages and select the paper on which the inside of the book is to be printed.

The picture on the right shows the appearance of the cover when unfolded, where the title page of the cover is on the right.

A properly prepared cover design should be 3 mm wide + X + X 3 mm wide spine and 3 mm + Y + 3 mm high.