How to Use the Same ISBN Number Across Global Bookstores (And When Not To)

Going global with your book is exciting, but it also comes with technical and legal considerations, especially around ISBN usage. Whether you’re self-publishing or working with a small press, brands like ISBN Services can help streamline the process of international registration. One key question that arises often: Can you use the same ISBN number across all countries and bookstores?

The answer is: sometimes. Here’s how it works.

The Purpose of an ISBN Number

An ISBN (International Standard Book Number) is a 13-digit code that serves as a universal identifier for your book. It includes metadata such as:

• The book’s edition
• Its format (paperback, hardcover, eBook, audiobook)
• The publisher’s identity

Using the right ISBN ensures your book is correctly listed, cataloged, sold, and reported in sales systems worldwide.

When You Can Use the Same ISBN Globally

You can reuse the same ISBN number across global platforms if all of the following are true:

• The book’s content and layout are identical
• It’s the same format (e.g., paperback)
• It’s published under the same imprint/publisher
• It’s distributed through multiple countries or regions without content modification

For example, if your paperback novel is sold in the U.S., U.K., Australia, and India under the same title and design, you may use one ISBN number for all markets.

*When You Must Use a Different ISBN Number

Use a new ISBN if:

• You’re releasing a different format (e.g., an eBook or audiobook)
• You publish a translated edition
• You issue a revised or updated edition
• You’re using different publishers or platforms with unique metadata requirements

Each version must have its own ISBN number so it can be independently listed, tracked, and sold without confusion.

ISBN Usage Examples

What About Retailers with Regional Rules?

Some regional retailers may require you to assign country-specific ISBNs, especially if you’re distributing through multiple platforms or localized publishers. Also, some retailers like Amazon, Apple Books, and IngramSpark have different rules regarding metadata and ISBN validation.

It’s wise to consult your distributor’s guidelines or work with a professional ISBN management service like ISBN Services to avoid conflicts.

Benefits of ISBN Consistency

Using the same ISBN number (when allowed) can offer several benefits:

• Simplifies inventory management
• Reduces metadata duplication
• Helps readers and distributors find your book more easily
• Streamlines royalty reporting and catalog integration

Frequently Asked Questions

Q: Can I use the same ISBN for print and eBook formats?
A: No. Each format requires its own unique ISBN number.

Q: If I sell my paperback in the U.S. and India, do I need different ISBNs?
A: Not necessarily. If the book’s format and metadata are identical, you can use the same ISBN globally.

Q: Do ISBNs work internationally?
A: Yes. ISBNs are globally recognized, though each is assigned to a specific registrant country or publisher.

Q: What happens if I use the same ISBN incorrectly?
A: Misusing an ISBN can cause distribution delays, listing errors, and reporting issues across platforms.

Q: Should I buy a separate ISBN for each format even if the content is the same?
A: Yes. ISBNs identify both the content and the format, so different formats always need unique ISBNs.

Final Thoughts

Reusing the same ISBN number across global bookstores can simplify your publishing workflow, but only if the format and content remain consistent. For anything else, new formats, translations, or revised editions, registering a new ISBN is the right call.

To ensure you stay compliant and maximize your book’s discoverability worldwide, consider working with professionals like ISBN Services. Their support can help you avoid common pitfalls and ensure your ISBN strategy aligns with your long-term publishing goals.