Disclaimer

Independent resource

KDP Tools Hub is an independent resource and is not affiliated with or endorsed by Amazon.com, Inc. or its affiliates.

Estimates, not guarantees

KDP Tools Hub is an independent informational resource. Calculations are estimates unless explicitly stated otherwise. Results depend on the inputs you provide and on the assumptions shown on each tool page.

Amazon specifications change

Amazon policies, fees, royalties, printing costs, marketplace requirements, and other specifications can change at any time. We record when each value was last checked, but we cannot guarantee that every figure is current at the moment you use a tool.

Users should verify current requirements with Amazon KDP before publishing or making financial decisions. Your KDP Bookshelf, pricing page and cover templates are the final authority.

Sales and advertising estimates

Best Sellers Rank sales estimates are produced by our own approximate model. They are not Amazon data. Advertising calculations depend on your inputs and past performance does not predict future results.

Not professional advice

Nothing on this site is legal, tax, accounting or financial advice. Speak to a qualified professional about your specific situation. We do not promise any level of sales, income or ranking.

Generated ideas

Title, subtitle, series and pen-name ideas are suggestions only. They are not checked for originality, trademarks or existing use. Search before you commit to a name.

Affiliate links and advertising

Some pages may include advertising or affiliate links, which are labeled. If you buy through an affiliate link we may earn a commission at no extra cost to you. This never changes how our calculators work.