Free publishing tools
Less guessing.
Better decisions.
Model your book using KDP paperback trim sizes, create a production-ready ISBN barcode, and plan costs—then confirm final requirements with your chosen provider.
Choose a tool
One focused calculator
for each decision.
Book cover brief generator
Turn your book, reader, genre, and creative direction into a professional cover design brief you can download as a PDF.
Open the free tool →02Book cover thumbnail tester
Upload a book cover privately and test title readability, hierarchy, contrast, genre signals, and storefront impact at retail sizes.
Open the free tool →03Print cover template generator
Create an exact-size paperback cover planning template as a PDF or 300 DPI PNG from trim size, page count, and paper.
Open the free tool →04Cover design cost estimator
Estimate a realistic professional book-cover budget from creative approach, print formats, series branding, and promotional deliverables.
Open the free tool →05Cover redesign assessment
Review eight audience, positioning, production, series, and performance signals before deciding whether to redesign a book cover.
Open the free tool →06Spine width calculator
Calculate a KDP paperback spine width and full cover size from trim size, paper type, and final page count.
Open the free tool →07Word count to page count
Estimate printed book pages, spine width, and full cover dimensions from word count, KDP trim size, and layout density.
Open the free tool →08ISBN barcode generator
Create and download a Bookland EAN barcode from a valid ISBN-13, with an optional five-digit price add-on.
Open the free tool →09Publishing budget calculator
Build a working self-publishing budget for editing, cover design, formatting, and book launch costs.
Open the free tool →10Paperback royalty calculator
Estimate paperback earnings from list price, print cost, and the marketplace royalty percentage.
Open the free tool →