KENP Calculator

Calculate your Kindle Unlimited earnings based on pages read. Compare KU income vs regular sales to make informed decisions about KDP Select enrollment.

Current KENP Rate

Uses the latest Kindle Edition Normalized Pages (KENP) rate from Amazon's KDP Select Global Fund. Updated monthly with official rates.

KU vs Sales Comparison

See exactly how much you'd earn from Kindle Unlimited borrows compared to regular ebook sales at different price points.

Historical Rates

View KENP rate trends over time to understand how your KU earnings may fluctuate and plan your publishing strategy accordingly.

Understanding Kindle Unlimited Earnings

•KENP (Kindle Edition Normalized Pages): Amazon's standardized page count that ensures fair payment regardless of font size or formatting.
•Global Fund: Each month, Amazon allocates a fund that's divided among all KDP Select authors based on pages read.
•Rate Fluctuation: The per-page rate varies monthly based on the fund size and total pages read across all books.
•Full Read Bonus: You earn for every page read, so longer books can earn more per borrow if readers finish them.

KENP Calculator

Kindle Unlimited Earnings

Calculate your KU earnings from KENP (Kindle Edition Normalized Pages) read

Current KENP Rate (September 2025)

$0.00452 per page

Pages Read *

Find this in your KDP Reports dashboard

Timeframe

Quick Examples (Daily Pages)

Understanding KENP & Kindle Unlimited Earnings

KENP (Kindle Edition Normalized Pages) is Amazon's standardized page count system for Kindle Unlimited. When KU subscribers read your book, you earn money based on pages read, not books borrowed. Amazon normalizes all books to a standard format to ensure fair compensation regardless of font size, margins, or formatting.

How It Works: Each month, Amazon allocates a global fund (typically $30-40 million) for KDP Select authors. This fund is divided by the total KENP pages read across all books. Your earnings = (Your KENP reads) × (Monthly rate per page). The rate fluctuates monthly based on total KU activity.

Current Rate: As of September 2025, the KENP rate is $0.004521 per page. This means a 300-page book fully read earns $1.36. Rates typically range from $0.0041 to $0.0046 throughout the year, with slight variations based on seasonal reading patterns. For a complete analysis of KU vs regular sales, read our Kindle Unlimited strategy guide.

Kindle Unlimited vs Regular Sales: Which Earns More?

The eternal question for KDP authors: Should you enroll in KDP Select for Kindle Unlimited, or go wide and sell on multiple platforms? The answer depends on your book length, pricing, and genre. Understanding KDP royalty calculations is crucial for making this decision.

Short Books (150-250 pages)

KU: $0.68 - $1.13

$2.99 Sale: $2.09

Winner: Regular Sales

Medium Books (250-350 pages)

KU: $1.13 - $1.58

$3.99 Sale: $2.79

Winner: Regular Sales

Long Books (400+ pages)

KU: $1.81+

$4.99 Sale: $3.49

Winner: Competitive

💡 The Volume Factor

While regular sales earn more per transaction, KU readers consume 10-20 books per month vs. 2-3 purchases for regular buyers. This volume advantage can offset lower per-read earnings, especially for series books.

Strategies to Maximize Your KENP Earnings

Earning well from Kindle Unlimited requires strategic thinking beyond just enrolling in KDP Select. Here are proven tactics to maximize your KENP revenue:

1. Optimize Your Page Count

KENP rewards longer books. A 400-page book earns $1.81 per full read vs. $0.90 for a 200-page book. However, readers must finish for you to earn. Sweet spot: 250-350 pages—long enough to earn well, short enough to maintain completion rates.

Tip: Add valuable bonus content (character guides, deleted scenes, author notes) to increase page count without padding.

2. Write Compelling Openings

You only earn for pages read, not borrows. Hook readers in the first 10% to ensure they keep reading. KU readers are more likely to DNF (Did Not Finish) than buyers because they haven't invested money. Make every page count.

Tip: Start with action or intrigue. Save slow world-building for after you've hooked them.

3. Build Series with Cliffhangers

Series dominate KU because read-through is automatic. A reader who finishes book 1 often immediately downloads book 2. With 5 books at 300 pages each, that's $6.78 per reader vs. $2.09 for a single sale.

Tip: End each book with a satisfying conclusion but an unresolved series arc. Readers stay engaged without feeling cheated.

4. Target KU-Heavy Genres

Romance, fantasy, sci-fi, and LitRPG have the highest KU readership. These genres see 60-80% of readers using KU vs. 20-30% in non-fiction. Writing in KU-dominant genres significantly increases your earning potential.

Tip: Check Amazon's Top 100 in your genre. If most books show "Read for Free" badges, KU is strong there.

5. Use Amazon Ads to Boost Borrows

Amazon Ads work exceptionally well for KU books because there's no purchase barrier. Readers click and read immediately. Target ACOS (Advertising Cost of Sale) of 30-50% for KU books vs. 70% for sales, since you earn from pages read, not just the initial borrow.

Tip: Bid on competitor keywords. KU readers browse multiple books and often read several in one sitting.

💰 Real-World Example

A 5-book fantasy series (300 pages each) with 70% read-through generates: Book 1: 1,000 borrows × $1.36 = $1,360. Books 2-5: 700 borrows each × $1.36 = $3,808. Total: $5,168 vs. $2,090 if sold at $2.99 with 30% read-through. KU wins by 2.5x!

Why KENP Rates Fluctuate Monthly

Unlike fixed royalty rates for sales, KENP rates change every month. Understanding why helps you plan earnings and avoid surprises:

How the KDP Select Fund Works

Amazon allocates a fixed global fund each month (typically $30-40 million). This fund is divided by the total KENP pages read across all KDP Select books worldwide. More pages read = lower rate per page. Fewer pages = higher rate.

Formula:

Monthly Rate = Total Fund ÷ Total KENP Pages Read

Seasonal Patterns

Higher Rates (Nov-Feb): Holiday season sees more KU subscriptions but relatively stable reading. Fund increases while pages read grow slower = higher rates.
Lower Rates (Jun-Aug): Summer reading peaks. More pages read with modest fund increases = lower rates.
Stable Rates (Mar-May, Sep-Oct): Shoulder seasons with balanced fund and reading activity.

2025 Rate Trends

KENP rates in 2025 have ranged from $0.004091 (January) to $0.004521 (September), averaging around $0.0043. This represents a slight increase from 2024's average of $0.0042, likely due to Amazon increasing the fund size.

Highest: Sep 2025

$0.004521/page

Lowest: Jan 2025

$0.004091/page

📊 Planning Tip

Use $0.0043/page as your baseline for income projections. This conservative estimate accounts for monthly fluctuations. Any months above this rate are bonus earnings. Our calculator uses the current September 2025 rate ($0.004521) for accuracy.

How to Use This KENP Calculator

Our calculator provides accurate KENP earnings estimates using the latest September 2025 rate. Here's how to get the most value:

Enter Your KENP Page Count

Find your book's KENP count in KDP under "Book Details" or use Amazon's KENP calculator during upload. This is NOT your manuscript page count—Amazon normalizes formatting to a standard size. Typical KENP is 10-20% less than Word count ÷ 250.

Enter Daily Pages Read

Check your KDP reports for daily KENP reads. This number fluctuates based on borrows, marketing, and seasonality. For projections, use your 30-day average to smooth out daily variations.

Review Your Earnings

See instant calculations for daily, monthly, and yearly earnings at the current KENP rate. The calculator also shows historical rates so you can see how your earnings would vary across different months.

Compare KU vs Sales

Use the comparison tool to see if KU or regular sales earn more for your book. Enter your price and see side-by-side earnings for 200, 300, and 500-page books. This helps you decide whether to enroll in KDP Select.

Check Historical Rates

Scroll down to see KENP rates for the past 12 months. This helps you understand seasonal trends and plan launches for higher-rate months. Historical data shows your potential earnings if rates change.

📈 Accuracy & Updates

Our calculator uses the official September 2025 KENP rate ($0.004521/page) published by Amazon. We update rates monthly when Amazon releases new data. Bookmark this page to always have access to current rates and accurate earnings projections.

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Frequently Asked Questions

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Earning well from Kindle Unlimited requires strategic thinking beyond just enrolling in KDP Select. Here are proven tactics to maximize your KENP revenue:

1. Optimize Your Page Count

Tip: Add valuable bonus content (character guides, deleted scenes, author notes) to increase page count without padding.

2. Write Compelling Openings

Tip: Start with action or intrigue. Save slow world-building for after you've hooked them.

3. Build Series with Cliffhangers

Tip: End each book with a satisfying conclusion but an unresolved series arc. Readers stay engaged without feeling cheated.

4. Target KU-Heavy Genres

Tip: Check Amazon's Top 100 in your genre. If most books show "Read for Free" badges, KU is strong there.

5. Use Amazon Ads to Boost Borrows

Tip: Bid on competitor keywords. KU readers browse multiple books and often read several in one sitting.

💰 Real-World Example