Ken Jennings Books

Brainiac

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NATIONAL BESTSELLER • A witty, charming, and engaging dive into trivia’s colorful history, from America’s highest-earning game show contestant of all time and host of Jeopardy! &ld...

Ten Thousand Horses

By Ken Jennings John Stahl Wert

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Greek Mythology

By Ken Jennings, Mike Lowery

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U.S. Presidents

By Ken Jennings

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This guide to the United State presidents contains illustrations, trivia, and quizzes. A trivia book combines engaging facts about the American presidents with illustrations and skill-reinforcing...

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.