KDP inside margin by page count
A KDP paperback needs an inside margin of 0.375 in up to 150 pages, 0.5 in up to 300, 0.625 in up to 500, 0.75 in up to 700 and 0.875 in up to 828.
| Page count | Inside margin (gutter) | Top, bottom, outside: no bleed | Top, bottom, outside: with bleed |
|---|---|---|---|
| 24 to 150 | 0.375 in (9.6 mm) | at least 0.25 in (6.4 mm) | at least 0.375 in (9.6 mm) |
| 151 to 300 | 0.5 in (12.7 mm) | at least 0.25 in (6.4 mm) | at least 0.375 in (9.6 mm) |
| 301 to 500 | 0.625 in (15.9 mm) | at least 0.25 in (6.4 mm) | at least 0.375 in (9.6 mm) |
| 501 to 700 | 0.75 in (19.1 mm) | at least 0.25 in (6.4 mm) | at least 0.375 in (9.6 mm) |
| 701 to 828 | 0.875 in (22.3 mm) | at least 0.25 in (6.4 mm) | at least 0.375 in (9.6 mm) |
Source: KDP help, Set Trim Size, Bleed, and Margins; KDP help, Paperback Submission Guidelines. Read on 10 November 2026.
The inside margin (also called the gutter) is the strip next to the binding: the left side of odd pages and the right side of even pages. The same table applies to every trim size. Top, bottom and outside margins do not change with page count.
Measure the inside margin in your PDF
By trim size
- 6 x 9 inMargins and text area for every page count
- 5 x 8 inMargins and text area for every page count
- 5.5 x 8.5 inMargins and text area for every page count
- 8.5 x 11 inMargins and text area for every page count
- 8.25 x 8.25 inMargins and text area for every page count
- 7 x 10 inMargins and text area for every page count