Spine Width Calculator for Custom Book Covers
When designing your own custom book cover, it's crucial to get the spine size right. Incorrect spine width can result in misaligned artwork and text, especially for paperback and hardcover books.
Use this free book spine width calculator to determine the correct spine dimensions based on your page count and binding type. This ensures your book cover prints cleanly and professionally, no matter the format.
Select your binding style, enter your total number of pages, and we’ll give you the precise spine width in inches to use in your layout.
For detailed layout instructions, see our Book Cover Templates page or explore our Custom Cover Design Services if you'd like us to handle the formatting.
If you have questions or unique binding needs, contact our support team and we’ll help ensure your spine fits perfectly.
Book Spine Size Chart Based on Page Count and Binding Type
*Please note the spine size for books with 1-40 pages. And it's not suggested to print on the spine for books with less than 60 pages.
Please provide all cover files as tiff, eps or pdf files in CMYK colors at 300 dpi. If you are trying to match colors please use the pantone uncoated numbers and submit those numbers with your order and take the proof option for color matching. Custom sizes and bleeds available, you will be charged for the next size up on the pricing calculator and you will be responsible for layout of your special sizes.