KDP cover calculator and template generator.
The same spine, bleed and cover maths as Amazon's calculator, plus a 300 DPI template image you can copy or download with the guides already in place.
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Write a review on TrustpilotWhat the template shows
| Pink edge | Bleed, 0.125 in on the top, bottom and outer edges. Extend background art to the very edge; it gets trimmed off. |
|---|---|
| Solid line | Trim line: where the cover is cut. |
| Dashed line | Safe area, 0.125 in inside the trim. Keep text and logos inside it. |
| Grey column | The spine, sized from your page count and paper. Spine text needs 80+ pages and 0.0625 in clearance from each fold. |
| Yellow box | Where KDP prints the barcode: 2 × 1.2 in in the lower corner of the back cover. Leave it clear or KDP covers it with a white patch. |
This calculator supports paperback covers. For paperback and case-laminate hardcover design, use the free KDP Cover Creator. Check the final dimensions against KDP’s official cover template before publishing.
Or skip the template altogether
KDPify does this maths inside the app and builds the cover for you: AI-drawn front and back art from your own ChatGPT or Gemini account, your title typeset in display fonts, and a print-ready full-wrap PDF with the spine already sized.
- Spine width from page count and paper type, automatically
- Trim, bleed, safe-area and barcode guides in the editor
- Title, subtitle and author set by the app, never misspelled
- One-time purchase, 14-day free trial
Design your cover with the free KDP Cover Creator
Questions
Does this give the same numbers as Amazon's KDP cover calculator?
Yes, for paperbacks. It uses KDP's published formulas: spine width is page count × paper thickness (white 0.002252 in, cream 0.0025 in, colour 0.002347 in), with 0.125 in of bleed on every outer edge. Full cover width = bleed + back + spine + front + bleed; height = bleed + trim height + bleed. Results are rounded to three decimals like KDP's own tool.
Does it support hardcover?
This calculator supports paperback covers. For paperback and case-laminate hardcover design, use the free KDP Cover Creator. Check the final dimensions against KDP’s official cover template before publishing.
When can I put text on the spine?
KDP allows spine text from 80 pages up, and it must stay at least 0.0625 in away from each spine edge. Below that the spine is too thin and KDP rejects the cover.