Easily estimate the spine thickness of your book based on the number of pages and the paper type used. This tool rounds odd page counts to the nearest even number (since books are printed in sheets) and uses real-world data from actual printed samples for high accuracy.

Select your paper type — 65 GSM, 70 GSM, 80 GSM Natural Shade, or 100 GSM White — and enter your total page count to get a reliable spine thickness measurement in millimeters. Ideal for designers, publishers, and anyone preparing files for print!