KENP Calculator

Free Kindle Unlimited earnings calculator — estimate your KENP page-read royalties from book length, borrows, and the current KENPC per-page rate.

Current KENP rate: $0.00482 per page read · Apr 2026

KENP pages (normalized, usually above print pages)

KU readers who open it per month

Average % of the book a reader finishes

30,000 pages read × $0.00482/page
$144.60
estimated KU royalty / month
$1,735.20 / year
Per borrow at 100% read-through$1.45

Kindle Unlimited / KOLL page-read income only — excludes paid sales. The KENP rate is set monthly (Global Fund ÷ total pages read across all KDP Select titles), so it fluctuates; this uses the latest disclosed value.

See the full KENP rate history — every month since 2015, and how Amazon sets it

Pages read → monthly KU royalty

at $0.00482/page (Apr 2026)

Pages read / monthKU royalty / month/ year
1,000$4.82$57.84
10,000$48.20$578.40
50,000$241$2,892
100,000$482$5,784
500,000$2,410$28,920
1,000,000$4,820$57,840

How KENP Page-Read Royalties Work

When you enroll a book in KDP Select, Kindle Unlimited subscribers can borrow it for free and you get paid per page read instead of per sale. Amazon counts those pages in KENP (Kindle Edition Normalized Pages), a standardized measure so the payout is consistent across devices and font sizes.

Each month Amazon sets aside the KDP Select Global Fund and divides it by the total KENP read across every enrolled title. That quotient is the per-page rate — currently about $0.00482. Your earnings are simply the pages readers read of your book times that rate, so both the size of the fund and how many pages everyone reads move the number each month.

KENP vs. Print Pages — Why the Numbers Differ

A book's KENP count is almost always higher than its printed page count, because Amazon normalizes for a standard font and line spacing. A 250-page paperback might be 350–450 KENP. Use the KENP figure from your KDP bookshelf (not the paperback page count) when you estimate KU income, or your number will run low.

This is why book length matters so much for KU economics: a longer book that readers finish generates more KENP per borrow, while a short book or one with a weak opening (low read-through) earns far less even at the same number of borrows.

Should You Enroll in KDP Select for KU Income?

KDP Select requires ebook exclusivity to Amazon in exchange for KU page-read income, Kindle Countdown Deals, and free promo days. It tends to pay off in genres with heavy KU readership — romance, thrillers, sci-fi and fantasy — where readers binge-borrow rather than buy, so page-read income can exceed direct sales and exclusivity costs little. Authors who sell strongly on Apple Books, Kobo, or direct often earn more staying wide. Enrollment runs in 90-day terms, so it's a per-title, renewable decision.

KENP Calculator FAQ

What is KENP?
KENP stands for Kindle Edition Normalized Pages — Amazon's standardized page count used to pay Kindle Unlimited (KU) and Kindle Owners' Lending Library (KOLL) authors for pages read. Because real page counts vary with font and formatting, Amazon normalizes every enrolled book to a KENP count so a page read earns the same regardless of device or layout. A book's KENP count is usually higher than its print page count.
How much does Kindle Unlimited pay per page?
The KU per-page rate (the KENPC rate) is currently about $0.00482 per page read (Apr 2026). It is not fixed: Amazon divides the monthly KDP Select Global Fund by the total KENP read across all enrolled titles, so the rate drifts month to month — it has hovered between roughly $0.0040 and $0.0050 in recent years.
How is KENP income calculated?
Your KU royalty for a month equals the total KENP pages readers actually read of your book, multiplied by that month's per-page rate. So it's (book's KENP length × number of borrows × average read-through) × the rate. A long book that readers finish earns far more per borrow than a short book or one readers abandon early.
How much can you make on Kindle Unlimited?
It scales with borrows and book length. A 300-page book borrowed 100 times a month at full read-through is about 30,000 pages read — roughly $140–$150 a month at current rates. Authors who earn meaningfully from KU usually have a deep backlist in a binge-heavy genre (romance, thrillers, sci-fi and fantasy) where readers borrow and finish many titles.
Is KENP the same as the print page count?
No. KENP is a normalized count Amazon computes from your ebook's content, and it's typically higher than the printed page count (often 1.3–2× depending on formatting). The calculator above asks for the KENP figure, which you can see in your KDP bookshelf under the title's details — use that, not the paperback page count, for an accurate estimate.

Related Tools

KDP Royalty Calculator

Calculate Amazon KDP royalties for eBook (35%/70%), paperback, and hardcover.

Amazon Book Sales Calculator

Estimate monthly book sales and royalties from any Amazon Best Sellers Rank (BSR).

Steam Revenue Calculator

Estimate Steam game sales and net revenue from reviews using the Boxleiter method.

Steam Wishlist Calculator

Estimate launch week, first month, and lifetime revenue from your Steam wishlist count.