There are a number of calculators that you can use to work out how thick a book will be based on the page count and the type of paper to be used.
Here are a few:
IngramSpark Weight & Spine Width Calculator
Use this calculator to work out how heavy and how thick your book will be.
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Book Printing UK Spine Calculator
This calculator lets you choose your paper type and enter the number of pages your book will include. The website also has a guide on how to choose a paper type.
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PrintOnDemand Worldwide Spine Width Calculator
This page also gives an explanation of book sizes.
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Bookmobile Paperback Spine Width Calculator
This calculator also gives you the estimated weight of the book.
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Book Spine Calculation Explainer Videos
We found a few videos that will help you understand how these calculations work.
Book Spine Calculation Explainer Videos
We found a few videos that will help you understand how these calculations work.