# How to choose a trim size on KDP

Common sizes by genre, why large trims cost more and which sizes can go into expanded distribution.

The trim size is the size of the printed book. KDP lists 16 standard paperback sizes on Amazon.com and also takes custom sizes. The full list with page limits is in the [trim size table](https://kdpbookai.com/kdp/trim-sizes).

## Sizes by kind of book

| Book | Common sizes |
| --- | --- |
| Novels and memoirs | 5 × 8 in, 5.25 × 8 in, 5.5 × 8.5 in, 6 × 9 in |
| Picture books | 8.5 × 8.5 in, 8.25 × 8.25 in, 8 × 10 in, 8.5 × 11 in |
| Coloring and activity books | 8.5 × 11 in, 8 × 10 in |
| Comics and graphic novels | 7 × 10 in, 6.69 × 9.61 in, 8.5 × 11 in |
| Manga | 5 × 8 in, 5.5 × 8.5 in, 6 × 9 in |

These are the sizes each book type offers in kdpbookai. Look at a few bestsellers in your genre too: readers notice a book that is a very different size from its neighbours.

## Large trims cost more

KDP charges a higher rate for books wider than 6.12 in or taller than 9 in. A 200-page black-and-white paperback costs $3.40 at 6 × 9 in and $4.40 at 8.5 × 11 in.

## Expanded distribution

Expanded distribution offers your paperback to bookstores and libraries. Only some sizes qualify, and custom sizes never do. For black ink on white paper: 5 × 8 in, 5.06 × 7.81 in, 5.25 × 8 in, 5.5 × 8.5 in, 6 × 9 in, 6.14 × 9.21 in, 6.69 × 9.61 in, 7 × 10 in, 7.44 × 9.69 in, 7.5 × 9.25 in, 8 × 10 in, 8.5 × 11 in. For premium color: 5.5 × 8.5 in, 6 × 9 in, 6.14 × 9.21 in, 7 × 10 in, 8 × 10 in, 8.5 × 8.5 in, 8.5 × 11 in. More in [expanded distribution](https://kdpbookai.com/guides/kdp-expanded-distribution).

## Page limits

Every size has a minimum and maximum page count that depends on the paper. A size that works for a 300-page novel may not take 800 pages. The trim table shows both numbers for every size.

## Sources

- Source: [KDP · Set Trim Size, Bleed, and Margins](https://kdp.amazon.com/en_US/help/topic/GVBQ3CMEQW3W2VL6), checked 2026-11-07.
- Source: [KDP · Print Options](https://kdp.amazon.com/en_US/help/topic/G201834180), checked 2026-11-07.
- Source: [KDP · Printing Cost & Royalty Calculator](https://kdp.amazon.com/royalty-calculator), checked 2026-11-07.
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Page: https://kdpbookai.com/guides/choose-a-kdp-trim-size · Checked 2026-11-09

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