What does DNF mean in books? A reader's guide
DNF means “did not finish.” It labels a book you started, stopped, and decided not to go back to. Readers use it as a verb too: “I DNF’d it at page 60.”
That is the definition. The rest of this guide is about when to use it, how to record it, and why the readers who DNF freely tend to read more, not less.
Where DNF comes from
DNF is borrowed from race results, where a runner who starts but does not cross the line is marked DNF rather than given a time. Book bloggers picked it up in the 2000s, and it spread through Goodreads, StoryGraph, and BookTok.
The borrowed meaning matters. In racing, DNF is a neutral fact, not a judgement of the runner. That is exactly how it works with books: it records what happened, without deciding whose fault it was.
How readers use it
You will see DNF in four shapes:
- As a status. “DNF” sits alongside want to read, reading, and read on most tracking apps.
- As a verb. “I DNF’d it,” meaning you abandoned it.
- With a page number. “DNF at 40%” is the most useful form, because it says how much of a chance the book got.
- As a shelf. A DNF shelf collects everything you set down, so you can see the pattern.
Some readers add “DNF for now,” which means the book may come back. That distinction is worth keeping: a book that was wrong for a bad week is not the same as a book that was wrong for you.
When to DNF a book
There is no universal rule, but three of them are widely used:
- The 50-page rule. Give a book 50 pages. If it has not earned the next chapter, stop.
- The page-100 rule. More generous, common for literary fiction and long fantasy, which often take a while to start.
- The Nancy Pearl rule of 50. Read 50 pages, and if you are over 50 years old, subtract your age from 100 and read that many instead. Time gets more valuable.
A better test than any page count: if you have picked up your phone instead of the book three nights running, the book has already told you.
Why a DNF is worth recording
Most readers abandon a book by quietly losing it, then feel vaguely guilty for a year. Writing it down instead does three useful things.
It keeps your ratings honest. If you never record abandonments, your average rating drifts upward and stops meaning anything. Rating a book you did not finish is unfair to the book, so the right move is to mark it DNF with a reason and leave it unrated. There is more on this in our guide to building a book rating system.
It teaches you your own taste. After a year, a DNF shelf is remarkably specific: you will find you abandon multi-perspective epics, or anything in second person, or books over 500 pages in the summer. That is genuinely useful when you pick the next one.
It protects your reading time. The sunk cost of 80 pages feels real, and it is the main reason readers grind through books they dislike. Naming the abandonment ends the negotiation.
DNF and the other reader abbreviations
DNF travels with a small set of shorthand you will see in the same posts:
- TBR: to be read, the books waiting for you.
- ARC: advance reader copy, a pre-release edition.
- Tropes: the recurring patterns a book is built from.
- Buddy read: reading the same book alongside someone, at a shared pace.
The full list is in our reading glossary.
Recording a DNF in Endleaf
Endleaf treats DNF as a real status, not an afterthought: alongside want to read, reading, read, paused, and re-reading. You can record the page you stopped on and why, leave it unrated so your average stays honest, and still keep the sessions you logged, because that time was real reading whether or not you reached the end.
Statuses are unlimited and free, because a tracker that makes abandonment awkward is quietly pushing you to lie to it. Everything stays on your iPhone with no account and no feed, so your DNF shelf is nobody’s business but yours.