About KDP Tools Hub

Self-publishing on Amazon Kindle Direct Publishing means doing jobs that traditional publishers split across whole departments. You work out cover dimensions to a thousandth of an inch, price paperbacks around printing costs and royalty tiers, fit keywords into strict character limits, and judge whether your ads are actually making money.

KDP Tools Hub collects free, focused tools for those jobs. Each one does a single task well, shows its assumptions, and explains the formula behind the answer so you can check it yourself.

What we believe

• Free tools should stay free. Every calculator works without an account or email address.
• Your work is yours. Text and image tools run in your browser. Manuscripts, descriptions and images are not uploaded or stored.
• Show the working. Amazon's rates and specifications are kept in one dated configuration, and every tool explains the assumptions it uses.
• No hype. We will never promise earnings or rankings. Tools give estimates to help you decide; the decision is yours.

Independence

KDP Tools Hub is an independent resource and is not affiliated with or endorsed by Amazon.com, Inc. or its affiliates. Amazon, Kindle and KDP are trademarks of Amazon.com, Inc. or its affiliates and are used here only to describe the services our tools relate to.

Amazon updates royalties, printing costs and specifications from time to time. We check our figures regularly, but always confirm current requirements in your KDP Bookshelf before publishing. Read our full disclaimer.

Get in touch

Found a figure that has changed, or have an idea for a tool? Contact us. Corrections are always welcome.