Daniel Grotta Books

J. R. R. Tolkien

By Daniel Grotta, Tim Hildebrandt, Greg Hildebrandt

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A Tolkien Treasury

By Daniel Grotta, Illustrated By The Brothers Hildebrant Daniel Grotta

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J.R.R. Tolkien

By Daniel Grotta

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PC magazine guide to digital photography

By Daniel Grotta

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You have the camera, or intend to. You have the desire. Now, you have personalized instruction from PC Magazine "The play of light and color on the human imagination." That's how Daniel and Sally W...

Digital Imaging

By Daniel Grotta, Sally Wiener Grotta

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The biography of J. R. R. Tolkien

By Daniel Grotta

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The biography of J. R. R. Tolkien

By Daniel Grotta

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J.R.R. Tolkien Architect of Middle Earth

By Daniel Grotta Kurska

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J.R.R. Tolkien

By Daniel Grotta

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Seven From Haven

By Daniel Grotta

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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.