KDP BuilderKDP Builder
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Free Tools for Smarter Publishing

AI-powered tools to help you research, write, and optimize your Amazon KDP books. No signup required — just start creating.

Instant results No account needed Unlimited use
Most Popular

AI Book Title Generator

Generate catchy, marketable book titles for any genre. 10 unique ideas per batch.

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Book Description Generator

Write conversion-optimized book descriptions with Amazon HTML formatting included.

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KDP Royalty Calculator

Calculate your earnings for paperback, hardcover, and ebook across all Amazon marketplaces.

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Spine Width Calculator

Get exact spine width and full cover dimensions for paperback and hardcover. Uses Amazon's official formulas.

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Book Description Formatter

Format your KDP book description with Amazon-approved HTML. Bold, headings, bullet points — preview and copy.

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KDP Upload Checklist

Interactive checklist covering manuscript, cover, metadata, and account setup. Don't miss a single requirement.

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Coming Soon

More free tools are in development

KDP Keyword Research

Find high-demand, low-competition keywords for your book niche.

Cover Design Analyzer

AI analysis of your book cover's marketability and genre fit.

Want the Complete Publishing Package?

These free tools are just a taste. KDP Builder creates complete, Amazon-ready book packages — manuscript, cover, interior, metadata, and more.