Amazon KDP Statistics & Market Data
Amazon KDP statistics across royalties, Kindle Unlimited, the Global Fund, and self-published author earnings, updated monthly. · Updated May 9, 2026
Median monthly royalty
$20
per title, estimated
Earn over $1k/mo
4.3%
how few reach the top
Self-published share
28%
of tracked Amazon bestsellers
Median Kindle price
$4.99
ebook list price
In Kindle Unlimited
57%
of KDP titles
Median length
136 pages
typical KDP title
Figures cover the Amazon bestsellers we track — titles that chart in their category, not every book ever published.
Paid to KU authors
$3.5B
since 2014, cumulative
Monthly Global Fund
$70.3M
May 2026 pool
KENP per-page rate
$0.00482
per page read, Apr 2026
Books read on KU
3B+
since 2014, cumulative
Books on Amazon
12M+
Kindle Store, estimated
Countries reached
245
and 40 languages
From Amazon's KDP disclosures, plus third-party Kindle Store catalog estimates.
Explore the stats in depth
The dashboard above is the overview. Each topic below has its own deep-dive page with the full data, history, and methodology.
How Much Do Self-Published Authors Make?
KDP author earnings milestones, the $100K+ author count, and what Amazon does and doesn't disclose about the distribution.
How Much Does Kindle Unlimited Pay Authors?
KU catalog growth, cumulative payouts, pricing history, and how page-read royalties stack up against direct sales.
KDP Royalty Rates Explained: 35% vs 70%
The full ebook and print royalty timeline, price-band rules, and the June 2025 print rate cut.
Current KENP Rate: KDP Per-Page Payout
The monthly KENPC per-page rate, how it's derived from the Global Fund, and its full history.
KDP Select Global Fund: Monthly Payouts & History
Every month of the Global Fund since 2014, the All-Stars Bonus pool, and annual derived totals.
Average Kindle Book Length by Genre
Median page count by genre, from children's books to romance, across tracked Kindle bestsellers.
Average Kindle Book Price by Format
What ebooks, paperbacks, and hardcovers cost on Amazon, plus where to price your own book.
How Many Books Are on Amazon?
The Kindle Store catalog over time, from 88K ebooks at launch to an estimated 12 million today.
Which Countries Is Amazon KDP Available In?
The 13 Kindle marketplaces, the 180+ countries you can publish from, and how you get paid.
What Amazon discloses, and what it doesn't
Amazon publishes the monthly Global Fund, royalty rates, and round-number author-earnings milestones (e.g. "more than 2,000 authors crossed $100K in 2022"). It does NOT publish: KU subscriber count, lifetime Kindle e-reader unit sales, Kindle/KU segment revenue in 10-K filings, the All-Stars pool size in real time, or the split between KU page-read royalties and direct-sale royalties. We surface these gaps explicitly rather than substitute analyst estimates.