Coloring Book Page Count Planner
Turn the number of coloring pictures into a total page count, check KDP limits and count sheets of paper for home printing.
Free tools · No sign-up
Free tools for kids book creators
Small calculators for the fiddly numbers behind a kids book. Each one shows its working, its assumptions and the sources it uses, so you can check it yourself.
Planning
Amazon KDP
KDP Paperback Royalty Calculator
Work out printing cost and royalty per sale for a paperback on Amazon.com, with monthly and yearly projections.
KDP Paperback Cover Size Calculator
Full-wrap cover size and spine width for a KDP paperback, and whether spine text is allowed.
KDP AI Disclosure Checker
Four yes/no questions to see what KDP says you need to tell it about AI-generated content. Not legal advice.
Pricing
Kids Book Break-Even Price Helper
Find the list price needed for a target royalty per sale, and compare royalty at several list prices.
Writing
Picture Book Word Count Guide
Editorial starting points for words per page and total words by age band, with a read-aloud time estimate.
Guides that use these numbers
Have the numbers? Make the book.
Plan a storybook, coloring book or activity book with consistent characters, and download it as a printable PDF.
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