How Many ISBNs Do I Need?

How Many ISBNs Do I Need?

If you are planning to purchase your own ISBNs (visit, you will want to know how many to purchase. On Bowker Identifier Services, you’ll have the option to purchase 1, 10, 100, or 1,000 ISBNs. So, how many should you buy? Here are some things to consider:

Each version of your book will need an ISBN, with the exception of an eBook version. While an eBook does not require an ISBN, it is recommended if you will be publishing across multiple platforms. This means if you are publishing Book One in Paperback, Hardback, eBook, and Audio, you will need 4 ISBNs.

Something to keep in mind is that your ISBNs will never expire. You can enter the data to use them at any time.

If you are still unsure about your best option, click here to email us your ISBN questions.


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