Kat Helgeson Books

Gena Finn

By Hannah Moskowitz, Kat Helgeson

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Gena Finn

By Hannah Moskowitz

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Told through emails, text messages, journal entries, and blog posts, two fans of a popular TV show become friends online, but soon realize the bond between them is more than fan fiction in this sto...

Say No to the Bro

By Kat Helgeson

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Yearn for Blood

By Tiffany Heiser, Kat Helgeson

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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.