8.5 x 11 in, 120 pages: KDP inside margin
An 8.5 x 11 in KDP paperback with 120 pages needs an inside margin of at least 0.375 in (9.6 mm).
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| Check | Your file | What the fix does |
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Pages that need a look
First 4 corrected pages
Clean pages, no watermark.trim linesafe area for text
Margins are measured from live text; pictures, lines and shapes that end inside a margin are listed as a note. The fix does not embed fonts, sharpen pictures or reflow text. Rules read from the official KDP help pages on 10 November 2026. This is an information tool, not professional advice, and not an approval.
| 8.5 x 11 in, 120 pages | No bleed | With bleed |
|---|---|---|
| Inside (gutter) margin | 0.375 in | 0.375 in |
| Top, bottom, outside margin | at least 0.25 in | at least 0.375 in |
| Largest text area | 7.875 x 10.5 in | 7.75 x 10.25 in |
| PDF page size | 8.5 x 11 in | 8.625 x 11.25 in |
Source: KDP help, Set Trim Size, Bleed, and Margins. Read on 10 November 2026.
120 pages falls in the 24 to 150 band. From 151 pages the inside margin rises to 0.5 in. Count every page in the PDF, blank ones included. The text area is calculated here from the published minimums.
On odd pages the inside margin is on the left; on even pages it is on the right. Drop your PDF above to see the margin on each page and which pages are short.
Questions
What inside margin does a 8.5 x 11 book with 120 pages need on KDP?
At least 0.375 in (9.6 mm). That is the KDP minimum for 24 to 150 pages, as read on 10 November 2026.
What are the other margins for 8.5 x 11 at 120 pages?
At least 0.25 in on the top, bottom and outside edge, or 0.375 in when the book has bleed.
All page counts
| 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) |