KDP specs calculator

Calculate the exact dimensions, spine width, and file requirements for your Amazon KDP coloring book. Supports all standard KDP trim sizes.

Number of design pages

Single-sided: each design gets a blank back page (106 total sheets)

Trim size

Paper type

Include bleed (0.125")

Required if your designs extend to the page edge

Interior page dimensions

Size (inches): 8.75" x 11.25"
Size (pixels @ 300 DPI): 2625 x 3375
Bleed: 0.125" each side
DPI: 300 (minimum)
Color mode: Grayscale
Format: PDF

Cover dimensions (full wrap)

Total size (inches): 17.549" x 11.250"
Total size (pixels): 5265 x 3375
Spine width: 0.2987"
Total sheets: 106
Front cover: 8.625" x 11.25"

How to use this calculator

Enter your page count, select your trim size, and choose your paper type. The calculator gives you the exact interior dimensions (with or without bleed), cover dimensions including spine width, and pixel requirements at 300 DPI. All specs follow Amazon KDP's current paperback guidelines.

Frequently asked questions

What trim sizes does Amazon KDP support for coloring books?: KDP supports 6 standard trim sizes for paperbacks: 5" x 8", 5.5" x 8.5", 6" x 9", 8" x 10", 8.5" x 8.5" (square), and 8.5" x 11". The most popular size for coloring books is 8.5" x 11" because it gives colorists the most space to work with.
What is bleed and do I need it for my coloring book?: Bleed is an extra 0.125 inches added to each edge of your page. You need bleed if your designs extend to the page edge (full-bleed). If your designs have a white border around them, you can submit without bleed. KDP recommends including bleed for professional results.
How is spine width calculated for KDP books?: Spine width depends on page count and paper type. For white paper: page count x 0.002252 inches. For cream paper: page count x 0.0025 inches. A 100-page coloring book on white paper has a spine width of about 0.23 inches.
What DPI should my coloring book interior be?: Amazon KDP requires 300 DPI for all interior pages. Your images must be at least 300 pixels per inch at the final trim size. For an 8.5" x 11" page, that means at least 2550 x 3300 pixels.

Last updated: March 2026. Based on Amazon KDP's current paperback specifications.

Frequently asked questions

What trim sizes does Amazon KDP support for coloring books?

KDP supports 6 standard trim sizes for paperbacks: 5" x 8", 5.5" x 8.5", 6" x 9", 8" x 10", 8.5" x 8.5" (square), and 8.5" x 11". The most popular size for coloring books is 8.5" x 11" because it gives colorists the most space to work with.

What is bleed and do I need it for my coloring book?

Bleed is an extra 0.125 inches added to each edge of your page. You need bleed if your designs extend to the page edge (full-bleed). If your designs have a white border around them, you can submit without bleed. KDP recommends including bleed for professional results.

How is spine width calculated for KDP books?

Spine width depends on page count and paper type. For white paper: page count x 0.002252 inches. For cream paper: page count x 0.0025 inches. A 100-page coloring book on white paper has a spine width of about 0.23 inches.

What DPI should my coloring book interior be?

Amazon KDP requires 300 DPI for all interior pages. Your images must be at least 300 pixels per inch at the final trim size. For an 8.5" x 11" page, that means at least 2550 x 3300 pixels.