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KDP cover size for a 554-page 6×9 standard paperback

Enter your details below and this free KDP cover calculator returns the exact spine width, full-cover dimensions, and a safe-zone diagram for a 554-page 6 × 9 in standard paperback — then download a print-ready template. 6 × 9 in is the most common size on KDP — the default for trade paperbacks, nonfiction, and most novels. Standard-color pages share white paper's 0.002252 in/page thickness, so the spine math matches a B&W book of the same page count. Adjust any field to recompute live, or use it as a paperback spine-width calculator for any page count.

Format
Paper
Trim size
Page count (24–828)
Spine width
1.2476in
31.69 mm
Spine text OK
Full cover
13.4976 × 9.2500 in
Other unit
342.84 × 234.95 mm
Cover layout diagramPaperback cover layout. Trim 6 by 9 inches. Spine width 1.2476 inches (31.69 mm). Full cover 13.4976 by 9.2500 inches. Diagram shows back panel, spine, front panel, safe-zone insets, and barcode placement on back cover.BarcodeBackFrontSpine 1.2476 inFull cover 13.4976 × 9.2500 in
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Before you upload

Finished your cover? Check it passes this exact 1.2476″-spine spec.

Cover Pass-Check reads your finished file and flags wrong size, missing bleed, low DPI, RGB color, and unembedded fonts — before KDP rejects it.

Try a similar page count

Same format, paper, and trim — different page count. Each link is its own pre-computed page.