Average Kindle Book Length by Genre
The median page length of Amazon Kindle bestsellers, genre by genre, from short children's books to long fiction · Updated Sep 8, 2026
Median length
137 pages
across all genres
Typical range
91-231 pages
middle 50% of titles
Longest genre
Sci-Fi & Fantasy
~354 pages median
Shortest genre
Children's
~54 pages median
Figures cover the Amazon bestsellers we track, titles that chart in their category, not every book ever published.
Average Kindle book length by genre
Median page count of charting Kindle titles in each top-level Amazon genre, longest to shortest. The bar shows the median; the range column is the typical 25th-to-75th-percentile spread. Length is a genre signal as much as a craft choice. Readers expect a romance to run long and a children's book to run short.
| Genre | Median length | Typical range | Titles |
|---|---|---|---|
| Sci-Fi & Fantasy | 354 pages | 248-492 | 1,418 |
| Mystery & Thriller | 319 pages | 249-410 | 1,517 |
| Romance | 296 pages | 174-397 | 4,117 |
| Literature & Fiction | 251 pages | 126-370 | 7,667 |
| Test Preparation | 218 pages | 126-385 | 1,140 |
| Teen & Young Adult | 191 pages | 117-306 | 3,885 |
| LGBTQ+ | 190 pages | 108-298 | 4,535 |
| Computers & Technology | 185 pages | 113-303 | 5,308 |
| Law | 176 pages | 102-311 | 2,180 |
| History | 174 pages | 112-300 | 3,191 |
| Education & Teaching | 173 pages | 101-308 | 3,594 |
| Engineering & Transportation | 172 pages | 102-293 | 2,856 |
| Christian Books & Bibles | 172 pages | 98-317 | 1,605 |
| Politics & Social Sciences | 169 pages | 105-270 | 1,731 |
| Foreign Languages | 167 pages | 87-299 | 7,218 |
| Medical | 166 pages | 98-288 | 4,550 |
| Religion & Spirituality | 164 pages | 97-282 | 6,215 |
| Biographies & Memoirs | 161 pages | 99-272 | 1,527 |
| Business & Money | 158 pages | 97-248 | 5,098 |
| Science & Math | 156 pages | 85-264 | 3,434 |
| Sports & Outdoors | 155 pages | 93-257 | 2,944 |
| Parenting & Relationships | 150 pages | 94-239 | 1,878 |
| Humor & Entertainment | 149 pages | 91-283 | 2,715 |
| Cookbooks, Food & Wine | 148 pages | 98-232 | 3,609 |
| Travel | 146 pages | 99-212 | 5,471 |
| Reference | 144 pages | 83-242 | 3,232 |
| Health, Fitness & Dieting | 143 pages | 93-216 | 6,279 |
| Self-Help | 140 pages | 97-209 | 1,818 |
| Arts & Photography | 118 pages | 70-191 | 3,801 |
| Crafts, Hobbies & Home | 118 pages | 72-186 | 5,904 |
| Comics & Graphic Novels | 91 pages | 45-151 | 321 |
| Children's | 54 pages | 32-118 | 5,507 |
What the average book length actually is
Across the Amazon Kindle bestsellers we track, the median title runs about 137 pages, but that one number hides a huge spread. Genre is the biggest driver of length: children's and low-content books run short by design, while romance and literary fiction run long to satisfy reader expectations. The "average book" is close to a myth; the average book in your genre is the number that actually helps you plan a manuscript.
Why length varies so much by genre
Reader expectations set length. Romance readers want a full emotional arc and often binge a series, so books run long. Children's books, journals, and other low-content titles are short by design. Non-fiction how-to, reference, and self-help land in the middle. Writing well outside your genre's norm sends the wrong signal: a 60-page “novel” or a 400-page picture book both look off to readers and to Amazon's also-bought engine, which clusters titles partly by shape and category.
How long should your book be?
Find your genre in the table and aim for its typical range, the 25th-to-75th-percentile band. Landing inside that range is the safe default: long enough to meet expectations, short enough to keep print costs and KENP page-read economics sane. Going well above or below it should be a deliberate craft choice, not an accident. Remember these are page counts of books that already chart, so they describe the shape of titles that are working, not a rule you must obey.
Methodology
Population. Active, likely-KDP Kindle titles (our self-published heuristic) that currently chart in at least one Amazon category. Page count is parsed from each title's print-length field; entries over 5,000 pages are dropped as data errors or box sets.
Genre. Each title is grouped by the top-level Amazon category it charts in (Romance, Children's, Business & Money, and so on). A title that charts in more than one genre is counted in each. Only genres with more than 200 tracked titles are shown.
Median, not mean. We report the median page count because length distributions have long tails. A few box sets or very short titles would skew an average. The range column is the 25th-to-75th-percentile spread, i.e. where the middle half of titles in that genre sit.
Pages, not words. Figures are page counts as Amazon reports them, not word counts. A rough conversion is ~250-300 words per page, but it varies with trim size, font, and formatting.
Average Book Length FAQ
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