KDP Metric — Amazon Book Niche Research

Research Amazon KDP niches in a side panel: A–F grades, categories, keywords and royalties on current KDP rules. Free, no account.

KDP Metric turns any Amazon book search, Best Sellers list or book page into honest research — right in Chrome's side panel, while you browse. Find out whether a niche is winnable before you write, which categories and keywords fit your book, and what each sale really pays under KDP's current rules. FREE — NO ACCOUNT, NO TIME LIMIT • A–F Niche Grade with a confidence level: demand, competition and how reachable the entry bar is • Strategy Coach: the reviews to aim for, a price band or Kindle Unlimited approach, and a clear enter-or-avoid call • Competition table: every book scored for how beatable it is — ads and repeated listings are left out of every figure • Category finder: reads the categories the top books in a niche rank in • Category targeting on any book page: its exact sub-categories and ranks • Keyword Explorer: Amazon's own search suggestions, each one click from its competition check • Title Optimizer, title word cloud and a cover wall of every rival • Movers & Shakers, Hot New Releases and Best Sellers in one click • Book tracking, estimated author earnings and CSV export • Simple mode for a quick answer, Advanced mode for every number • 12 Amazon stores, light and dark themes KDP METRIC PRO — ONE PAYMENT, NO SUBSCRIPTION • Category Scout AI: a private assistant that runs on Chrome's built-in AI, on your computer. It compares searches with you and gives a recommendation whose figures are calculated from the pages you compared, not guessed. • Book Report Card and recovery plan: a visibility grade and a prioritised, tickable list of fixes • Keyword & Metadata Builder: 7 ready-to-paste keyword boxes, filtered to KDP's rules • KDP metadata check: flags title, subtitle and keyword rule breaks before you publish • Royalty & price checker: what one sale pays under the current 70%/35% bands, with VAT/GST, delivery fees and print costs taken into account the way KDP does • Launch checklist: 12 KDP steps, each linked to KDP's own help page • Rank history for tracked books, Niche AI Brief, Category Hunter and white-label PDF reports BUILT TO BE ACCURATE • KDP rules — royalty bands, delivery fees, print costs, keyword and category limits — are dated and checked against KDP's help pages. Updated for KDP's July 2026 royalty change. • Sales are estimated as ranges, never single numbers, and the range is wider for stores with no public calibration. • Prices are compared like for like: a Kindle book is never averaged with a paperback. PRIVATE BY DESIGN • Works on the Amazon pages you open. Anything beyond that — keyword suggestions, the category finder stepping through three books — happens only when you click it. • No account, no sign-up, no analytics or tracking. • Sharing anonymous book facts (rank, price, rating) to improve trend data is optional and off by default. • Category Scout AI runs on your device; your conversation is never sent to us. GOOD TO KNOW • Category Scout AI needs a desktop Chrome with built-in AI available; Google controls where it's offered. • Sales and earnings figures are estimates, not financial advice. • KDP Metric is an independent tool and isn't affiliated with, or endorsed by, Amazon. Website and free tools: https://kdpmetric.com Support: support@kdpmetric.com