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Printorium Bookworks
905 Fort Street
Victoria, BC V8V 3K3

Please feel free to use our book spine thickness calculator to determine the spine thickness of your softcover book project. Enter the number of pages in your book in the appropriate column for the type of paper you are using, and select "calculate" to find the width of the spine.


  • 60# white offset is the default stock for B&W books.
  • 50# white offset is a custom order.

Spine thickness calculator

Simply select the paper stock you wish to use, enter the number of pages of your book and hit calculate?the resulting amount will provide you with the spine width in inches.

Paper Type Number
of Pages
Spine Width
(In Inches)
50lb Offset    
60lb Offset    
70lb Offset    
80lb Gloss Text    
100lb Gloss Text    
80lb Silk Text    
100lb Silk Text