Tools for self-published authors

Get your book's numbers right the first time.

Exact cover dimensions, spine widths, margins and royalties for print-on-demand books on Amazon KDP and Lulu, paperback and hardcover. Free, with no sign-up.

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KDP paperback and hardcover
Lulu paperback and hardcover spines

6 × 9 in paperback, 300 pages on white paper, with 0.125 in bleed.

Covers

Full-wrap dimensions, spine width, templates and pre-upload checks.

Amazon KDP

Kindle Direct Publishing paperbacks and hardcovers

Paperback Cover SizeFull-wrap cover dimensions, spine width and a downloadable 300 DPI template.Hardcover Cover SizeCase-laminate cover size with wrap, boards, hinge and spine, plus a 300 DPI template.Spine WidthSpine width for any page count and paper, and whether spine text is allowed.Cover CheckerDrop in your cover export to check its size, DPI and safe zones. Nothing is uploaded.

Lulu

Lulu paperbacks and hardcovers

Paperback Cover SizeLulu paperback cover dimensions for all 15 trim sizes, with a 300 DPI template.Spine WidthLulu paperback spine formula and the hardcover spine table, for any page count.Cover CheckerDrop in your cover export to check its size, DPI and safe zones. Nothing is uploaded.

Interiors & pricing

Set up your manuscript, then price it so every sale earns.

Amazon KDP

Paperback interiors, printing cost and royalties

Interior MarginsPage size, gutter and outside margins to set in Word, Affinity or InDesign.Royalties & Print CostPrinting cost, paperback and Kindle royalties, and the minimum list price.

Cover sizes by trim

Full-wrap dimensions at every page count, for each platform and binding.