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KDP Hardcover Specs: A Guide to Amazon's Technical Requirements
Publishing a premium hardcover edition of your book on KDP is an exciting way to expand your author offerings. However, the technical specifications for a KDP hardcover are the most precise and unforgiving of all the KDP formats. To ensure your book is printed correctly and not rejected by the KDP system, you must adhere to these (The Crucial Part):** The exact dimensions are determined by your trim size, page count (which dictates spine width), and a large “wrap” area. The wrap is an extra 0.59″ (15mm) of cover art on all four sides that gets folded over the boards of the hardcover.
The Essential Tool: The KDP Cover Calculator
Do not try to guess or manually calculate your hardcover cover dimensions. You must use Amazon’ specs perfectly.
A hardcover file has unique requirements for its interior margins and, most importantly, for its cover dimensions, which are significantly different from a paperback. This guide will break down the essential KDP hardcover specs you and your designer need to know.s official tool.
How to use it: Go to the KDP Cover Calculator.
Select “Hardcover” as
Key Takeaways & Summary
- Specs are Non-Negotiable: The KDP hardcover specs are strict technical requirements for your print-ready files. Failure to meet them will result in your file being rejected.
- ** the binding type.
2. Enter your interior type, paper type, trim size, and final page count.
3. Click “Calculate dimensions.” - What it provides: The tool will give you the exact, precise dimensions for your full cover, including the front, back, spine, and the required wrap. It will also allowTwo PDF Files Required:** You will need two separate, high-resolution (300 DPI) PDF files: one for your interior and one for your wraparound cover.
- Cover Specs are Most Complex: The hardcover cover file has large “wrap” and “bleed” areas that are much bigger than a paperback’s. Using the official KDP Cover you to download a template (PNG or PDF) that your designer can use to build your cover file correctly. This step Calculator is essential.
- Case Laminate, No Dust Jacket: KDP hardcovers are “case laminate,” meaning the artwork is printed directly on the cover. The specs are for this type of binding.
KDP Hardcover Specs: The Interior File (PDF)
Your interior file must be a PDF that is formatted to your is a cornerstone of professional book production, a principle strongly advocated by author organizations like the Alliance of Independent Authors (ALLi).
Our book cover and interior design services are built around a mastery of these technical specifications chosen trim size.
Trim Size
KDP offers a specific, limited range of trim sizes for hardcovers, from 5.5″ x 8.5″ to 8.25″ x 11″. You must choose one of these approved sizes.
Page Count
Hardcovers must have between **75 and 5, ensuring your files are perfect the first time.
Short FAQ
Q: What is a “case laminate” cover?
A: This is the type of hardcover that KDP prints. It means your cover artwork is printed and50 pages**.
Margins
This is a critical spec. Because of the way hardcovers are bound, the “gutter” (the inside margin) needs to be larger than for a paperback to prevent text from being unreadable near the spine.
The exact required margin size depends on your page count. For example, a 151-300 page book requires an inside margin of at least 0.75″. You can find the complete laminated directly onto the hard boards of the cover itself. KDP does not currently offer the option for a separate paper dust jacket.
Q: What happens if my files don’t meet the KDP hardcover specs?
A: Your files will be rejected during the upload and review process. KDP will provide an error message explaining the problem (e.g., “The cover is the wrong size”), and you will not be able to publish until you upload a corrected file. This is why margin chart on Amazon’s KDP Hardcover help page.
Bleed
If you have images or graphical elements that you want to extend to the very edge of getting it right before you upload is so important.
Q: Can I use my paperback files for my hardcover?
A: No, absolutely not. The interior margins and the cover dimensions are completely different. You must have two separate, specially formatted sets of files if you are publishing both a paperback and a hardcover. This is a key part of our Amazon KDP publishing services.
