Data story · catalog shape
English audiobooks run twice as long as French ones: the shape of a 519,764-title catalog
The typical English audiobook runs 7 hours; the typical French one, 2.9. Shelves, release decades and series show where the difference sits.
This is a picture of what gets recorded and sold in each language, not of how long books are.
Length by language
The catalog behind our pages holds 526,653 unabridged, human-narrated works in six languages. The median length runs from 7 hours in English (n 409,794) down to 1.9 in Portuguese (n 3,625): English 7 (n 409,794); Italian 5.4 (n 7,326); German 4.1 (n 64,208); Spanish 3.9 (n 32,478); French 2.9 (n 9,222); Portuguese 1.9 (n 3,625).
Short titles drive much of the gap. Titles under one hour are 12.1% of English, 16.9% of Italian, 21.8% of German, 21.9% of Spanish, 29.6% of French, 35.1% of Portuguese works. The Kids shelf is part of it: it holds 9.2% of English, 9.7% of Italian, 13.5% of German, 9.9% of Spanish, 15.6% of French, 9.7% of Portuguese works. Without the Kids shelf the medians become English 7.4, Italian 5.8, German 5.2, Spanish 4.4, French 3.8, Portuguese 2.2 hours.
Length by shelf
In English, the longest top-level shelf is Fiction at a median of 9.1 hours (n 62,518), then Science Fiction & Fantasy at 9 (n 42,126) and History at 8.9 (n 20,247). The shortest are Self-Development at 4.5 hours (n 26,666) and Kids at 1.5 (n 37,584).
The same shelf can differ a lot between languages. Non-Fiction is the widest case: 7.1 h in English (n 39,028), 3.7 h in German (n 3,249), 3.7 h in Spanish (n 3,078), 1 h in French (n 830), 3.5 h in Italian (n 687), its longest language median 6.9 times its shortest. Romance is the closest: 8.1 h in English (n 63,227), 7.5 h in German (n 10,976), 7.4 h in Spanish (n 2,788), 8.3 h in French (n 950), 9.5 h in Italian (n 523); its longest language median is 1.28 times its shortest, the smallest ratio of any shelf with at least 500 works in four or more languages.
| Shelf (median hours, n) | English | German | Spanish | French | Italian | Portuguese |
|---|---|---|---|---|---|---|
| Romance | 8.1 (63,227) | 7.5 (10,976) | 7.4 (2,788) | 8.3 (950) | 9.5 (523) | – |
| Fiction | 9.1 (62,518) | 7.9 (6,304) | 7.1 (4,533) | 6.8 (904) | 7.6 (1,845) | – |
| Mystery, Thriller & Horror | 8.7 (53,570) | 6.4 (11,895) | 7.7 (3,178) | 7.2 (876) | 8.3 (972) | – |
| Science Fiction & Fantasy | 9 (42,126) | 7.5 (6,465) | 6.7 (1,615) | 9.5 (681) | – | – |
| Literature | 6.3 (41,638) | 2.7 (7,198) | 4.8 (4,976) | 2.3 (1,519) | 4.6 (932) | 1.1 (556) |
| Non-Fiction | 7.1 (39,028) | 3.7 (3,249) | 3.7 (3,078) | 1 (830) | 3.5 (687) | – |
| Health & Wellness | 5 (37,888) | 2.9 (5,822) | 2.6 (5,449) | 2.7 (989) | 3 (561) | 2.2 (545) |
| Kids | 1.5 (37,584) | 0.9 (8,645) | 0.8 (3,225) | 0.4 (1,442) | 1.8 (708) | – |
A dash means fewer than 500 works on that shelf in that language, so we give no median.
Length by release decade
The decade is the one the audio edition came out in, not the book's first publication. In English the median was 1 hour (n 1,022) for the 1990s, 7.1 hours (n 17,603) for the 2000s, 7.3 hours (n 123,823) for the 2010s, 6.8 hours (n 267,050) for the 2020s. In German it was 1.2 hours (n 894) for the 2000s, 1.6 hours (n 13,112) for the 2010s, 5.3 hours (n 50,195) for the 2020s; the 2020s hold 78.2% of all German works.
The longest novel series
A series counts as complete when every numbered book from book 1 on is in the catalog and it has at least three books. 14,455 series meet that bar, 13,075 of them English. The median complete English series runs 32.7 hours in total, and 484 run 100 hours or more. The ranking below is novel series only.
| # | Series (English) | Books | Total hours |
|---|---|---|---|
| 1 | Saga of Recluce (L. E. Modesitt Jr.) | 25 | 562.2 |
| 2 | Wheel of Time (Robert Jordan) | 15 | 463.6 |
| 3 | Outlander (Diana Gabaldon) | 9 | 413.7 |
| 4 | Charlotte and Thomas Pitt Mysteries (Anne Perry) | 32 | 403 |
| 5 | Malazan Book of the Fallen (Steven Erikson) | 10 | 389.8 |
| 6 | Sam Reilly (Christopher Cartwright) | 39 | 369.6 |
| 7 | Dragon Heart (Kirill Klevanski) | 22 | 339.2 |
| 8 | Mrs. Jeffries (Emily Brightwell) | 41 | 336.5 |
| 9 | The Joe Gunther Mysteries (Archer Mayor) | 33 | 312.6 |
| 10 | Hollows (Kim Harrison) | 18 | 306.4 |
The longest novel series in the other languages: German, Australien-Saga (12 books, 154.7 hours); Spanish, La Rueda del Tiempo (15 books, 500.4 hours); French, Le Cycle des démons (5 books, 145.2 hours); Italian, Kingsbridge (4 books, 151 hours); Portuguese, Trilogia Tormenta (3 books, 80.3 hours). Long complete fiction series, ranked by shelf.
Not ranked, as compilations rather than novel series: Old-Time Radio (72 parts, 552.8 hours); Outlanders (Dramatized Adaptation) (56 parts, 384.2 hours).
Plan any of them
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Start listening freeMethodology.The population is every unabridged, human-narrated work in the store's catalog for English, German, Spanish, French, Italian and Portuguese (526,653 works; our data: 519,764 audiobooks catalogued in six languages; 8,559 measured and reviewed in depth). Lengths are the store-listed running times; medians, because a few titles over 100 hours would pull a mean up. A title counts on every shelf the store lists it under. No figure is given for a group under 500 works. The series ranking is novel series: complete series whose books mostly sit on a fiction shelf; compilations (radio collections, dramatized adaptations, anthologies) and non-fiction series are not ranked, and series with a book on the Kids shelf or the excluded shelf are left out. Source: the store's product data for its full catalog, read 2026-11-03; computed by The Books Insider. Explore the full dataset on ouraudiobook statistics page.About & methodology →