Books like Tool of War
Paolo Bacigalupi, Sunil Malhotra
Tool of War is 381 pages, about 6 hours 59 minutes at 250 words a minute.
12 books to read next
How long each takes
Maximum Ride Forever 7.5 h 
Shatter Me 6.8 h 
The Neptune Project 6.3 h 
Dr. Franklin's Island 4.5 h 
Birthmarked 6.3 h 
Above World 6.6 h 
Unravel Me 8.5 h 
Ignite Me 7.6 h 
Restore Me 8.1 h 
The Angel Experiment 7.9 h 
Defy Me 7.0 h 
School's Out Forever 7.6 h Bar height shows length. Estimated at 250 words a minute.