Book · Non-fiction, memoir and self-help
What If?
by Randall Munroe
Page count, estimated reading time and reading quiz: everything to know before you start What If?, and the Vread challenge to get to the end.
- Pages
- 161
- Reading time
- ≈ 3 h
- Checkpoints
- 5
- Genre
- Non-fiction
Free on iPhone and Android.
How long does it take to read What If??
At 161 pages, What If? is a medium-length book. Expect about 3 hours of reading to finish it, based on 250 words per page and an average reading speed of 230 words per minute. A fast reader will go quicker; a careful read (or reading in a second language) will take longer.
At 30 minutes a day, that is about 6 days of reading. At the median pace of Vread readers, 72 pages per reading day, it takes 3 reading days. For a book of this length (under 250 pages), Vread readers who finish it take a median of 4 days between the first and the last checkpoint (Vread Reading Barometer 2026).
- 30 minutes a day6 days
- Vread median pace (72 pp./day)3 days
Estimates; see the method at the bottom of the page.
Prove you read it
The Vread challenge: 5 checkpoints
- Checkpoint 1, page 32
- Checkpoint 2, page 64
- Checkpoint 3, page 97
- Checkpoint 4, page 129
- Checkpoint 5, page 161
In Vread, What If? is split into 5 checkpoints, one every 32 pages or so. At each checkpoint, a question covers the passage you have just read: a correct answer validates the step, and your progress moves forward like a training plan.
The challenge: validate all 5 checkpoints through to the last page. No giant quiz at the end, no summary to copy out: short questions along the way that prove the book was actually read. It also works as a reading quiz to check your understanding before a test.
Also available in French on Vread.
Illustrative example
What a checkpoint looks like
A short, precise question about the pages you have just read: a character, a place, a choice.
The answer is in the text: reply in the app.
This is not a question from What If?: to avoid spoilers, the real questions stay in the app.
Answer in the app, one checkpoint at a time.
Summary, quiz, reviews: frequently asked questions
How many pages is What If??
How long does it take to read What If??
Is there a quiz on What If??
Where can I find a summary of What If??
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Read What If? with Vread
Add the book to your library, read at your own pace in whatever format you use, and validate each checkpoint. Vread is free on iPhone and Android.
Take the challenge