To convert the running time of an audiobook into the print version word count, follow these steps.

1. Go to Amazon.com
2. Search for your book and add "Audiobook" to the end. Such as "Gone Girl Audiobook"
3. Scroll down to Product Details and copy the Listening Length value ("19 hours and 11 minutes" as an example)
4. Paste that value into the field above and click Convert.