Mark Sisson Books

Perfect Health Diet

By Paul Jaminet, Shou Ching Jaminet, Mark Sisson

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Perfect Health Diet

By Paul Jaminet, Shou Ching Jaminet, Mark Sisson

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21 Day Total Body Transformation

By Mark Sisson

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Primal Blueprint Quick and Easy Cookbook

By Mark Sisson

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The Keto Reset Diet

By Mark Sisson With Brad Kearns

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NEW YORK TIMES BESTSELLER • Mark Sisson unveils his groundbreaking ketogenic diet plan that resets your metabolism in 21 days so you can burn fat forever. “Sisson masterfu...

Two Meals a Day Cookbook

By Mark Sisson, Brad Kearns

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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.