From the production desk

Guides written like a spec sheet

Book sizes, margins, typesetting, editing and launch — every figure checked against the platform’s own documentation or measured on our press, with sources at the end of each guide.

Guide · KDP margins by page countFact-checking

Gutter for 151–300 pages: 0.5 inKDP Help
Outside margin without bleed: 0.25 inKDP Help
Bleed adds 0.125 in width, 0.25 in heightKDP Help
Cream paper: 0.0025 in per pageKDP Help
91,490 words → 267 pages at 6 × 9Measured
IngramSpark inside margin: 1 in recommendedIngramSpark

1/6 claims sourcedSources listed

Book silhouettes drawn to scale: mass market 4.25×6.87, 5×8, 5.5×8.5, 6×9 and 7×10 inches, with page counts for a 90,000-word novel.

Formatting · 11 min read

Standard Book Sizes: A Trim Size Chart for Paperbacks, Hardcovers and Novels

Which trim size to choose, what each one is used for, and how the choice changes your page count, spine and print cost — with measured results from a real 90,000-word manuscript.

Updated October 28, 2026

An open book spread with the gutter highlighted and KDP's inside-margin minimums by page count: 0.375, 0.5, 0.625, 0.75 and 0.875 inches.

Formatting · 10 min read

KDP Margins: Gutter and Margin Sizes by Page Count (with 6 × 9 and 5.5 × 8.5 Examples)

The official minimums, the margins a production editor would actually set, and how to fix the “content outside the margins” error in KDP’s Print Previewer.

Updated October 28, 2026

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