Free KDP Tool
KDP Book Cover Calculator
Estimate spine width, bleed dimensions, and a full-wrap cover size for a KDP paperback or hardcover. Confirm all dimensions against the current KDP template and previewer before submitting a cover.
Book Specifications
KDP requires a minimum of 24 pages and a maximum of 828 pages for paperbacks.
Cover Dimensions
Spine Width0.2702" (6.86 mm)
Full Wrap Width12.7702" (3831 px @ 300 DPI)
Full Wrap Height9.2500" (2775 px @ 300 DPI)
Front Cover6.1250" × 9.2500"
Front Cover (px)1838 × 2775 px
Bleed (all sides)0.125" (0.125")
Cover Layout Diagram
Back Cover
Spine
Front Cover
← Bleed zone (0.125")
Spine: 0.2702"
How KDP Calculates Spine Width
White paper: Page count × 0.002252" | Cream paper: Page count × 0.002500" | Color paper: Page count × 0.002347"
Full wrap width = Back cover width + Spine + Front cover width + (Bleed × 4). Each cover panel = Trim width + 0.125" bleed on the outer edge. Full wrap height = Trim height + (0.125" × 2).
Develop an AI-Assisted Cover Concept
Use ImprintaAI to explore a cover concept, then review image rights, typography, dimensions, and current platform requirements before publishing.
Need the back-cover barcode too? Make a free ISBN barcode with a price add-on.