Reading time

How long does it take to read Keys to the Demon Prison?

Keys to the Demon Prison by Brandon Mull is about 560 pages, so it takes about 10 hours at an average 238 words per minute — about 20 days at 30 minutes a day.

At an average reading speed

9 h 48 min

Keys to the Demon Prison · Brandon Mull · first published 2010

Pages
560
30 min a day
20 days

By reading speed

Unhurried reader · 180 wpm12 h 58 min
Average adult · 238 wpm9 h 48 min
Quick reader · 300 wpm7 h 47 min
Very fast reader · 400 wpm5 h 50 min

By daily habit

Your reading speed

15 minutes a day40 days
30 minutes a day20 days
45 minutes a day14 days
60 minutes a day10 days

Page count: median of 11 editions on Open Library. Times assume about 250 words per page. How we calculate.

#5 in Fablehaven

Your real reading speed

Time your sessions and Bookwisp learns how fast you actually read.

Start the timer when you open the book; it keeps running on your Lock Screen. Stop it, note your page, and your weekly minutes and streak update.

The Now screen in Bookwisp with the books in progress

Keys to the Demon Prison: reading time questions

How many pages is Keys to the Demon Prison?
Keys to the Demon Prison is about 560 pages. That is the median across the 11 editions listed on Open Library; hardcover, paperback and large-print editions differ.
How long does it take to read Keys to the Demon Prison?
About 9 h 48 min at 238 words per minute, the average silent reading speed for adults. A quick reader at 300 words per minute needs about 7 h 47 min.
How many days to read Keys to the Demon Prison at 30 minutes a day?
About 20 days. At 15 minutes a day it takes about 40 days, and at an hour a day about 10 days.
What number is Keys to the Demon Prison in the Fablehaven series?
Keys to the Demon Prison is book 5 in Fablehaven by Brandon Mull.

Books of about the same length