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Enter your monthly page reads and KENP rate to estimate your KU income — free.
Each month, Amazon sets aside a pool of money called the KDP Select Global Fund. After the month ends, Amazon divides the total fund by the total number of KENP pages read across all enrolled books to get the per-page rate — the KENP rate. This rate typically falls between $0.004 and $0.005 per page. Amazon announces the fund amount, total pages read, and resulting rate in your KDP dashboard after each month's payment cycle. The rate varies month to month based on how much Amazon allocates and how many pages are read globally.
Your book's KENP page count is visible in your KDP dashboard under the book details for any KDP Select title. It's different from your formatted page count — a 300-page printed book might have 280 KENP pages. When KU subscribers read your book, their reading progress is tracked and Amazon counts the pages they actually read (not just downloaded), multiplying those pages by the monthly KENP rate to calculate your royalty.
Do I get paid if someone only reads half my book?
Yes — you're paid for the pages actually read, not the pages downloaded. If a KU subscriber reads 150 of your 300 KENP pages, you earn 150 × KENP rate for that reader. This is one reason why a compelling start and strong read-through matters more for KU income than for direct sales.
How is KENP different from page count?
KENP is Amazon's normalised count, independent of font size, device screen size, or formatting choices. The KENP count is fixed when you publish — a reader making the text larger on their Kindle doesn't increase your KENP earnings. Amazon calibrates KENP to a standard baseline so all books are measured fairly.
Is KENP income worth it compared to direct Kindle sales?
It depends on your genre and pricing. A $4.99 eBook earns $3.49 per direct Kindle sale (70% rate). At a KENP rate of $0.00424, you need roughly 823 pages read to earn the same $3.49. A 300-page book fully read by 3 KU subscribers earns more than one direct sale. In KU-popular genres where readers consume books quickly and in volume, KENP income often far exceeds direct sales.
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