The Unknown Quantity: Audiobook
According to The Books Insider's catalog data, The Unknown Quantity runs 0.2 hours as an unabridged audiobook, narrated by Christopher Ragland (about 0.2 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 0.2 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 1 day |
| 1 hour / day | 1 day |
| 2 hours / day | 1 day |
| 1 hour / day at 1.5× | 1 day |
You'll finish in – by –
Part of The Audiobook Finish-Time Calculator: the same instrument for any audiobook we measure.
What our data says
- At 0.2 hours, it is shorter than 99% of the 824 Historical (Teen & YA) audiobooks in our catalog.
More narrated by Christopher Ragland
Christopher Ragland narrates 293 unabridged audiobooks in our catalog, 2,260 hours in all.
- I Am Pilgrim
- I Am Pilgrim: The bestselling Richard & Judy Book Club pick
- The Gifted
- The Last House on Needless Street
- Bullshit Jobs: A Theory
About as long, on the Historical (Teen & YA) shelf
8 Historical (Teen & YA) audiobooks in our catalog run within 10% of this length. The most popular on the store:
Computed from 409,794 English-language unabridged audiobooks in The Books Insider catalog (store data read November 3, 2026). Lengths are the store's own running times. Methodology.
About this listen
The Unknown Quantity is an audiobook by O Henry: a 0.2-hour unabridged recording, read by Christopher Ragland, released September 9, 2024, on the Historical (Teen & YA) and Fiction shelves.
The listen at a glance
- Length
- 0.2 hrs
- Narrated by
- Christopher Ragland
- Released
- September 9, 2024
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Historical (Teen & YA), Fiction
- ISBN
- 9781836821977
How to listen to The Unknown Quantity free
New members at audiobooks.com get three free audiobooks with the trial.
Separately, the store's catalog carries more than 10,000 audiobooks that are always free to stream.
Start listening freeQuestions listeners ask
How long is The Unknown Quantity as an audiobook?
The Unknown Quantity runs 0.2 hours unabridged. At 1.5× speed that drops to roughly 0.2 hours.
Is The Unknown Quantity free as an audiobook?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates The Unknown Quantity?
The Unknown Quantity is narrated by Christopher Ragland.