KDP Cover Size Requirements: Exact Dimensions for Every Format

The standard KDP cover size for a paperback is 2,560 x 1,600 pixels for the front cover alone, but the full wrap template varies based on your trim size, page count, and paper type. For eBooks, you need a minimum of 625 x 1,000 pixels, with Amazon recommending 2,560 x 1,600 pixels (a 1.6:1 height-to-width ratio). Hardcover dimensions follow similar rules to paperback but add case laminate or jacket specifications. Below are the exact numbers for every format so you never upload a cover that gets rejected.

KDP eBook Cover Dimensions

Amazon's Kindle eBook covers have the most straightforward requirements:

• Minimum size: 625 x 1,000 pixels
• Maximum size: 10,000 x 10,000 pixels
• Ideal size: 2,560 x 1,600 pixels
• Aspect ratio: 1.6:1 (height to width)
• File format: JPEG or TIFF
• Color space: RGB (not CMYK)
• DPI: 72 is fine for screen display, though higher won't hurt

Here's the thing most guides skip: if your cover is below 2,500 pixels on the longest side, Amazon may display it as blurry on high-resolution tablets and the desktop Kindle app. Always go for 2,560 x 1,600. There's no good reason to go smaller.

KDP Paperback Cover Dimensions

Paperback covers are more complex because you're dealing with a full wrap: front cover, spine, and back cover all in one file. The exact dimensions depend on three variables:

• Trim size (the finished size of your book)
• Page count (determines spine width)
• Paper type (white or cream paper, each has a different thickness)

The formula for your full cover width is:

Full cover width = Front cover width + Spine width + Back cover width + Bleed (0.125" on each side)

Full cover height = Trim height + Bleed (0.125" top and bottom)

Spine Width Calculation

Amazon calculates spine width using these multipliers:

• White paper: Page count × 0.002252"
• Cream paper: Page count × 0.0025"

So a 200-page book on cream paper has a spine of 200 × 0.0025 = 0.5 inches. A 200-page book on white paper has a spine of 200 × 0.002252 = 0.4504 inches.

Common Paperback Trim Sizes and Their Cover Dimensions

Here are the most popular KDP trim sizes with the front cover dimensions (before adding spine and bleed):

• 5" x 8" — Popular for fiction
• 5.5" x 8.5" — The most common fiction/nonfiction size
• 6" x 9" — Standard for nonfiction, business books, and memoirs
• 8.5" x 11" — Workbooks, coloring books, and planners

All paperback covers must be submitted at 300 DPI in PDF format using CMYK color space. This is non-negotiable. RGB submissions will either get rejected or print with shifted colors.

Skip the Math: Use Amazon's Cover Calculator

Amazon provides a free Cover Calculator tool that generates a PNG template with exact dimensions and guidelines for your specific book. Enter your trim size, page count, and paper type, and it spits out a ready-to-use template. Every cover designer I know uses this as their starting point.

KDP Hardcover Cover Dimensions

Hardcovers on KDP come in two styles: case laminate (printed directly on the board) and dust jacket (a removable paper wrapper). Each has different dimension requirements.

Case Laminate

• Cover extends 0.125" beyond the text block on all sides (called "board overhang")
• Add 0.0625" bleed on top, bottom, and outside edges
• Spine width: Page count × 0.0025" (always uses cream-equivalent calculation)
• File format: PDF, 300 DPI, CMYK

Dust Jacket

• Same board overhang and bleed as case laminate
• Add front and back flaps (each flap is 3.875" wide)
• Total width = Back flap + Back cover + Spine + Front cover + Front flap + all bleeds
• File format: PDF, 300 DPI, CMYK

Hardcover dimensions are the trickiest to calculate manually. Honestly, just use Amazon's Cover Calculator for these. One wrong measurement and your text wraps around the spine in an ugly way.

Common Mistakes That Get Covers Rejected

After seeing hundreds of cover rejections across forums and from readers I've worked with, these are the repeat offenders:

• Submitting RGB instead of CMYK for print. Your screen shows RGB beautifully. Your printed book will look washed out.
• Ignoring the bleed zone. Any image or background color must extend into the 0.125" bleed area. Otherwise you get white edges on your printed book.
• Text too close to the trim line. Keep all text at least 0.25" from the trim edge and 0.0625" from the spine edge.
• Low resolution for print covers. Anything under 300 DPI will look pixelated in print even if it looks fine on your monitor.
• Wrong spine width. If you add or remove pages after your cover is designed, the spine changes. Recalculate every time.
• Barcode placement. Amazon places a barcode on the back cover automatically. Leave a 2" x 1.2" white space in the lower-right area of the back cover.

Your Cover Is Only Half the Equation

Getting your cover dimensions right matters, but a perfectly sized cover on a listing with a weak title, bad subtitle, or thin description still underperforms. Once your cover file meets KDP's specs and looks professional, spend equal time optimizing the text around it. The Listing Optimizer on PublishRank can help you audit your title, subtitle, description, and keywords so your listing converts the traffic that your cover attracts.

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