Free AI Amazon Category Finder
Find the best Amazon categories for your book with AI. Get BISAC codes, category paths, and strategic recommendations.
How the category finder works
Three steps take you from a vague genre guess to a precise list of Amazon categories worth claiming for your book.
Describe your book
Enter your title, genre, and a short description of the plot, topic, or angle. The more specific you are, the closer the matches will be.
Get matching categories
The tool returns relevant Amazon browse categories with their full paths and matching BISAC codes, so you know exactly where the book belongs.
Pick and apply
Review the recommendations, weigh how competitive each category looks, and enter your chosen categories in the KDP setup screen.
Who uses the category finder
Category placement, alongside your keyword research, decides who ever sees your book. These are the authors who use the finder before they hit publish.
New KDP authors
You are uploading your first book and the KDP category picker is overwhelming. Get a shortlist of categories that actually fit your book instead of guessing.
Authors chasing a bestseller badge
You want the orange best seller tag but the obvious categories are crowded. Find smaller, on-topic subcategories where ranking is realistic.
Authors relaunching a backlist
An older title is no longer selling. Recheck its categories against what readers browse today and move it somewhere with fresh visibility.
Frequently asked questions
KDP lets you select up to three categories during book setup. Choose a mix: at least one category where you can realistically rank, and one or two broader ones that describe the book accurately so the right readers find it.
BISAC codes are the standardized subject codes the publishing industry uses to classify books. KDP maps your selections to BISAC codes behind the scenes. This tool shows the matching codes so you understand exactly how your book is being categorized.
A smaller, accurate subcategory is usually the better choice. Huge categories are dominated by long-established bestsellers, while a precise niche category gives a new book a real chance to rank and earn a badge.
KDP only exposes a subset of the categories visible on the Amazon storefront. If a category you want is not selectable at setup, you can contact KDP support and request placement, citing the exact category path.
Yes. You can update categories at any time by editing your book in the KDP dashboard. It is common to revisit category placement after launch once you see how the book performs against its competition.
Related tools & guides
Keep going with more free tools and in-depth guides
Competition Analyzer
Gauge how crowded each category really is.
KDP Categories Strategy
Land bestseller categories without tricks.
KDP Keyword Research
Real Amazon keyword and competition data.
KDP 7 Keyword Slots
Fill all seven backend keyword slots.
Book Blurb Generator
Write the Amazon description to match.
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