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Amazon Category Finder: Pick KDP Categories You Can Actually Rank In

See which Amazon Kindle categories fit your tropes, how competitive each chart is, and what daily sales it takes to reach #1 and #50.

Fiction or non-fiction

About the tool

Kindle categories you can actually rank in

The Author Atlas Category Finder suggests Amazon Kindle categories that fit your book and shows how hard each one is to break into. Enter your genre keywords or tropes, plus an optional plot summary. You'll get a ranked list of category paths with a similarity score, a competition score, and the estimated daily ebook sales needed to reach #1 and #50 in each chart. Each category links to its live Amazon bestseller page so you can check it yourself.

Trope match

Similarity score vs bestsellers in each browse path

Competition

How many daily sales it takes to reach #1 and #50

Rank targets

ABSR of chart leaders translated into sales estimates

Live charts

Each category links to its Amazon bestseller page

How it works

From tropes to a shortlist of KDP categories

  1. Choose Fiction or Non-Fiction

    Set the broad store context for your search.

  2. Enter keywords or tropes

    Genres you want to explore or tropes in your book — for example "cozy mystery, amateur sleuth, bakery" or "action adventure, LitRPG, dungeon core."

  3. Add a plot summary (optional)

    A few sentences about premise, setting and tone improve similarity scores.

  4. Click Find categories

    The tool compares your inputs against tropes of bestsellers in each category, then scores fit and competition.

  5. Shortlist and verify

    Use Show more for additional paths, click through to Amazon, and choose your three categories in KDP.

Worked example: cozy bakery mystery

Real tool output

Your inputs

Fiction
Yes
Keywords
cozy mystery, amateur sleuth, small town, bakery
Plot
A widowed baker in a seaside Maine town finds a food critic dead in her walk-in fridge and must clear her name before the summer festival.

Top paths (scores change as charts move)

Mystery › Cozy › Culinary — Similarity 100, Competition 27, ~96 sales/day for #1 Mystery › Cozy › Crafts & Hobbies — Similarity 95, Competition 22 Mystery › Cozy (broad) — Similarity 91, Competition 81 Mystery › Amateur Sleuth — Similarity 85, Competition 56

Cozy › Culinary is the obvious first pick. Skip high-competition paths with low similarity — relevance always comes first.

Editorial strategy

How to choose Amazon categories that sell

Why categories matter

Categories tell the store where to shelve your book. You can select three categories in KDP. They decide which bestseller charts you compete in — and a #1 badge is a visible signal on that shelf.

Understand ABSR

Every book has a Best Sellers Rank. Within a category, the lowest ABSR is #1. The tool converts rank into estimated daily sales so you can compare categories — but treat numbers as a snapshot, not a promise.

Balance relevance and competition

  • The best fit — the most specific category your book clearly belongs in.
  • The realistic win — a relevant niche where launch sales could reach the top 50 or #1.
  • A different angle — setting, theme or sub-genre that reaches another reader group.

Tip

Drill down to the deepest sub-category that genuinely fits. Specific shelves are usually less crowded.

Never pick a category your book doesn't belong in

Misleading categorisation can get categories removed and attracts the wrong readers. A high competition score only helps when similarity is high too.

Keep keywords and categories in sync

After picking categories, align your KDP keywords and book description. If nothing fits, revisit your concept with Write to Market.

Related tools

FAQ

Amazon category questions, answered

How many categories can I choose on Amazon KDP?

You can select three categories per book in KDP. Choose the most specific sub-categories that genuinely describe your book. Amazon also places you in the broader parent categories above them.

How do I find less competitive Amazon categories?

Look at the sales needed to reach #1 in each category, not just how popular the genre sounds. In this tool, sort your shortlist by competition score and sales for rank 1, but only among categories with a high similarity score. Then click through to Amazon to confirm the books there look like yours.

What is ABSR on Amazon?

ABSR stands for Amazon Best Sellers Rank. It's a number based on a book's recent sales compared with every other book in the store, so a lower number means more sales. Within a category, the book with the lowest ABSR is #1.

How many sales does it take to be #1 in an Amazon category?

It varies a lot by category and changes throughout the day. In our example, one niche cozy category needed an estimated 96 ebook sales a day for #1, while the broader Cozy chart needed over 1,200. The Sales for rank 1 column gives you a current estimate for comparison.

Can I change my book's categories after publishing?

Yes. Go to your KDP Bookshelf, choose Edit details, and update your categories in the Categories section. Changes can take up to 72 hours to show on Amazon.

What happens if I pick the wrong category?

You'll reach readers who weren't looking for your book, which hurts conversions and can lead to poor reviews. Amazon may also remove or change categories that don't match your content. Relevance should always come first.

Do I need an account to use the Category Finder?

No. You can run a search right away. The sales and rank figures are estimates for comparing categories, not guarantees.