Price a paperback realistically
Estimate per-sale royalty based on page count, ink, trim, and the marketplace you care about.
Free author toolNo signup requiredKDP royalty calculator
Free KDP Royalty Calculator
Estimate paperback or eBook royalty per sale, cost assumptions, and simple revenue scenarios using transparent formulas.
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Start generatingGenerate the first useful version fast.
Free tool for authors. No signup required.
What the KDP royalty calculator should help you judge
Compare eBook royalty paths
See the difference between 35% and 70% assumptions instead of guessing from memory.
Check the economics before publishing
Use the simple revenue scenarios to see how price and format change the math before launch.
Examples
KDP pricing scenarios worth modeling
US paperback pricing
Estimate a black-ink paperback at Amazon.com and compare the royalty impact of list price changes.
European eBook pricing
Model how VAT and delivery costs influence the eBook estimate in an EU marketplace.
Expanded distribution sanity check
See how the lower royalty rate changes the economics before you enable it.
Why it matters
Why understanding KDP royalty math matters before an author presses publish
Royalty math affects more than curiosity. It shapes pricing confidence, format strategy, and whether the book can realistically support future revisions, marketing, or a second title. Authors who understand the economics early make better tradeoffs around trim, page count, file size, and distribution choices. That does not replace the writing work, but it does protect the business side of a writing career from avoidable guesswork.
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Know the economics. Now create the book that earns them.
Once the publishing math looks viable, move into BookWriter to build the manuscript, packaging, and publish-ready assets.