Free tool
Cover size calculator
Enter your book setup and get the spine width, full wrap size, panel rectangles, safe areas and the pixels you need at your chosen resolution. No credits are used for arithmetic or a blank guide. This is an independent calculator. It is not connected to an Amazon account and it does not submit anything for you.
Profile KDP paperback, status verified arithmetic. Spine and wrap arithmetic follow published KDP paper factors. Page ranges vary by paper, ink and trim, so confirm your exact combination in KDP before ordering. No side by side comparison against a downloaded official template has been run yet. Source checked 2026-09-11: printer guidance.
| Total wrap width | 12.9256 in |
|---|---|
| Total wrap height | 9.2500 in |
| Spine width | 0.6756 in |
| Outer bleed | 0.1250 in |
| Front panel | 6.0000 in by 9.0000 in |
| Back panel | 6.0000 in by 9.0000 in |
| Safe area inset | 0.5000 in |
| Barcode space | 2.0000 in by 1.2000 in |
| PDF page size | 930.64 by 666.00 pt |
| Pixels at 300 ppi | 3878 by 2775 px |
| Spine lettering | Advised at this page count |
A calculator establishes dimensions, not print readiness. Artwork still needs enough native pixels, correct typography and validated output before you upload it.