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KDP cover size for a 687-page 5×8 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 687-page 5 × 8 in white paperback — then download a print-ready template. At 5 × 8 in this is the compact trade size most novels, memoirs, and pocket nonfiction ship in. 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.

Format
Paper
Trim size
Page count (24–828)
Spine width
1.5471in
39.30 mm
Spine text OK
Full cover
11.7971 × 8.2500 in
Other unit
299.65 × 209.55 mm
Cover layout diagramPaperback cover layout. Trim 5 by 8 inches. Spine width 1.5471 inches (39.30 mm). Full cover 11.7971 by 8.2500 inches. Diagram shows back panel, spine, front panel, safe-zone insets, and barcode placement on back cover.BarcodeBackFrontSpine 1.5471 inFull cover 11.7971 × 8.2500 in
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Before you upload

Finished your cover? Check it passes this exact 1.5471″-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.

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