Dan Koboldt Books

Hyperpowers

By E. J. Shumak, Brandon L. Summers, Dan Koboldt, Erik B. Scott, William Huggins, Sam Bellotto Jr, Mark Rookyard, John M. Campbell

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Putting the Fact in Fantasy

By Edited By Dan Koboldt Foreword By Scott Lynch

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A collection of essays from historians, linguists, martial artists, and other experts to help you write more compelling fantasy by getting the facts rightWhether it's correctly naming the parts of...

Silver Queendom

By Dan Koboldt

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When you owe money to the biggest criminal in town you are going to need to step up your thieving game a notch…--- Service at the Red Rooster Inn isn’t what you’d call "good," or...

Putting the Science in Fiction

By Dan Koboldt

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Science and technology have starring roles in a wide range of genres--science fiction, fantasy, thriller, mystery, and more. Unfortunately, many depictions of technical subjects in literature, film...

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.