As of today, we estimate that there are 129,864,880 different books in the world. That's a lot of knowledge captured in the written word! This calculation used an algorithm that combines books information from multiple sources including libraries, WorldCat, national union catalogs and commercial providers. And the actual number of books is always increasing.
Ultimately, it is truly incredible to fathom the depth and breadth of published works out there in the world. To find out how we calculated this number (no, we didn’t count them on our fingers:), check out the Google Books blog.