If you're ever said to yourself, "I want to find a good book to read, but want to finish it quickly" -- maybe if you have a school project or something -- this is the tool for you. It can tell you how long it'll take to read that book.

HowLongToRead.com has an archive of nearly 12 million books. Just simply search for the book you'd like to read and it'll tell you how long it should take you.

Here's how it works: Once you find the book, there's a passage from the book. Using the online tools, it times how fast your reading time is and gets an average from that. I tried it with "Harry Potter and the Sorcerer's Stone." It told me that if I were to read it in one sitting, it'd take me three hours and 19 minutes. Not too bad.

I thought this was pretty neat. Check it out for yourself!