Can I use my paperback cover file for the hardcover?
Short answer
Not as it is: a KDP hardcover cover wraps 0.51 in past the edge of the front cover, has a 0.4 in hinge and keeps text 0.635 in from the edge, while a paperback has only 0.125 in of bleed. The hardcover also needs its own ISBN, 75 to 550 pages and one of five trim sizes.
What it costs with me, Jooneyd: With me, a hardcover cover adds $150 to a cover, built on the hardcover template. A new cover starts at $599.
Why the paperback file won't fit
A hardcover cover wraps around boards, so the artwork runs 0.51 in (15 mm) past the edge and leaves room for a 0.4 in (10 mm) hinge. Text and images must sit 0.635 in (16 mm) from the edge. The file has to be rebuilt on the hardcover template as a single PDF.
Books over 120 pages also get a headband on the spine.
What KDP hardcovers offer
A hardcover needs its own ISBN, so update the copyright page too. The interior uses the same margin table as the paperback, but a 5×8 or 5.25×8 paperback has to be re-laid out, because those trims aren't offered in hardcover.
- Case laminate only. Dust jackets, cloth binding and other hardcover formats aren't available.
- Trims: 5.5×8.5, 6×9, 6.14×9.21, 7×10 and 8.25×11.
- 75 to 550 pages.
- Black ink on white or cream paper, or premium color. Standard color is not available.
IngramSpark and Lulu
IngramSpark casebound covers need 0.625 in bleed and wrap. It also offers dust jackets, which add 3.25 in flaps, and takes 18–840 pages. Lulu's casewrap needs a 0.75 in safety margin.
The rules at a glance
| What | The rule | Source |
|---|---|---|
| Wrap | 0.51 in (15 mm) | Amazon KDP Help |
| Hinge | 0.4 in (10 mm) | Amazon KDP Help |
| Safe zone | Text and images 0.635 in (16 mm) from the edge | Amazon KDP Help |
| File | A single PDF | Amazon KDP Help |
| Headband | On the spine of books over 120 pages | Amazon KDP Help |
| Binding | Case laminate only; no dust jackets or cloth binding | Amazon KDP Help |
| Trims | 5.5×8.5, 6×9, 6.14×9.21, 7×10, 8.25×11 | Amazon KDP Help |
| Page count | 75–550 pages | Amazon KDP Help |
| ISBN | A unique ISBN for the hardcover edition | Amazon KDP Help |
| Ink and paper | Black ink on white or cream, or premium color; no standard color | Amazon KDP Help |
| IngramSpark casebound bleed and wrap | 0.625 in | IngramSpark Help |
| IngramSpark dust jacket flaps | 3.25 in | IngramSpark Help |
| IngramSpark hardcover page count | 18–840 pages | IngramSpark Help |
| Lulu casewrap safety margin | 0.75 in | Lulu Help |
Checked 27 October 2026 on the stores’ own help pages.
Stretching the paperback cover to hardcover size instead of rebuilding it on the hardcover template.
Need it done?
I turn your paperback into a hardcover edition, with files ready to upload. Book cover design from $599.
Related answers
Why does KDP keep rejecting my cover?The real reasons KDP rejects paperback covers: wrong size for your page count, spine maths, text too near the Why did IngramSpark reject my cover again?IngramSpark cover rejections explained: template size, PDF/X settings, CMYK and ink limits, barcode and spine Do I need to buy an ISBN for KDP and IngramSpark?Free KDP and IngramSpark ISBNs only work on their own platform. When to own your ISBN and where to get it in tSources
- Amazon KDP Help: Create a hardcover cover
- Amazon KDP Help: Hardcover
- Amazon KDP Help: Print options
- Amazon KDP Help: Set trim size, bleed and margins
- IngramSpark File Creation Guide (8.24.26)
- IngramSpark trim size matrix
- Lulu Help: Print-ready PDF requirements