KDP Spine Width for 600-Page Books
The spine width of a 600-page book depends on the paper type you choose. Thicker paper (like cream) produces a wider spine. Below are the exact spine widths for each paper type.
| Paper Type | Thickness/Page | Spine Width | Spine (mm) | Spine Text? |
|---|---|---|---|---|
| B&W White | 0.002252" | 1.3512" | 34.32 mm | Yes |
| B&W Cream | 0.002500" | 1.5000" | 38.10 mm | Yes |
| Standard Color | 0.002252" | 1.3512" | 34.32 mm | Yes |
| Premium Color | 0.002347" | 1.4082" | 35.77 mm | Yes |
Spine Width Formula
spine_width = page_count × thickness_per_page
spine_width = 600 × thickness_per_page
spine_width = 600 × thickness_per_page
Spine text is allowed.
KDP requires at least 79 pages to add text to the spine.
Your 600-page book qualifies for spine text.
How Paper Type Affects Spine Width
At 600 pages, switching from B&W White (thinnest) to B&W Cream (thickest per page) increases the spine width by 11.0%. This difference becomes more significant with higher page counts.