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Amazon KDP authors, cover designers, and self-publishers preparing a paperback wrap

KDP Paperback Cover Size Calculator

Calculate KDP paperback spine width, full-wrap cover dimensions, bleed, and 300 DPI pixel size.

Instructions: Enter your values, review the instant result, then sign up to save the tool.

Spine width

Enter values to see the result.

Instructions

  1. Enter the numbers or text for your situation.
  2. The result updates instantly in your browser.
  3. Sign up to save this tool to your favorites.

Good for

KDP Paperback Cover Size

Use this tool when you need a quick answer for kdp cover calculator. Enter your details, compare the result, and adjust the inputs until the numbers match your situation.

Use it well

  • Use the final formatted page count, not the draft manuscript page count.
  • Recalculate if you switch paper type because the spine changes.
  • Keep spine text out of covers under 79 pages and confirm the official KDP template before upload.

Quick guide

How to use this before uploading a paperback cover

KDP paperback covers use one full-wrap PDF, so the front cover, back cover, spine, bleed, and final page count all have to agree before upload.

  1. Enter the trim size selected in KDP, such as 6 x 9 or 5.5 x 8.5.
  2. Use the final formatted page count from the interior PDF, not the draft manuscript.
  3. Choose the same paper and ink option used for the paperback setup.
  4. Copy the full cover dimensions and 300 DPI pixel size into your design file, then confirm with KDP's official template generator.
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Free KDP Paperback Cover Size: Calculate KDP paperback spine width, full-wrap cover dimensions, bleed, and 300 DPI pixel size.

Sources and freshness

Sources checked 2026-07-31

Amazon KDP publishes paperback cover equations, 0.125 inch bleed guidance, paper-specific spine multipliers, minimum 300 DPI image guidance, and the 79-page minimum for spine text. Confirm the generated template in KDP before publishing.

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Use this KDP paperback cover size calculator to turn trim size, final page count, paper type, bleed, and DPI into a full-wrap cover canvas. It calculates spine width, total cover width, total cover height, pixel dimensions for 300 DPI artwork, and the safe spine text width before you hand specs to a designer or upload a paperback cover PDF. Helpful for kdp cover calculator, kdp paperback cover size, online kdp paperback cover size, ecommerce calculator, quick estimate, planning tool, browser tool, and practical everyday comparisons.