Roy H. Williams Books

"The Wizard of Ads books have become known for their unique blend of principle, practicality, and lore. Now here's the third book in the series, with yet more sage guidance and dozens of fascinatin...

Earth Science

By Roy H. Williams

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The Story of Chapel Dulcinea The Gospel of Don

By Roy H. Williams

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Spectroscopy

By Roy H. Williams

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Earth Science

By Roy H. Williams

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.