KDP cover size for a 440-page 6×9 white 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 440-page 6 × 9 in white 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. White B&W pages use the 0.002252 in/page multiplier — the thinnest stock and the narrowest spine for a given page count. Adjust any field to recompute live, or use it as a paperback spine-width calculator for any page count.
- Full cover
- 13.2409 × 9.2500 in
- Other unit
- 336.32 × 234.95 mm
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Finished your cover? Check it passes this exact 0.9909″-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.