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Should I use KDP’s free ISBN or my own?

You will have different ISBN options depending on the book you are about to publish. Read further for more details.


Does KDP offer a free ISBN?

Yes, KDP offers a free ISBN and can be obtained during publishing. These ISBNs would be pre-registered under the imprint name “Independently published.”

You can obtain a free ISBN on the Content page during your book setup. Once there, select “Assign me a free ISBN.”

If you are publishing a low-content book, the free KDP ISBN option is not available. You can choose to either use your own ISBN or publish without an ISBN. If you publish without an ISBN, we’ll automatically assign an ASIN for your book. Learn more about low-content books.

Note: Free ISBNs from KDP cannot be used outside of our publishing service. If you plan to publish your book elsewhere, it’s recommended you purchase (and register) your own ISBN.

Can I use my own ISBN on KDP?

You can use your own ISBN on KDP. During your book setup, enter the 13-digit number and Imprint for the ISBN. Learn more about Imprints.

Note: If you re-use an ISBN for your book that was previously published outside of KDP, any orders placed for your book may be fulfilled with copies that don’t reflect the most recent content you uploaded to KDP.

Can I re-use my ISBN from another publisher?

If you own your book’s ISBN and have used it elsewhere, you can also use it on KDP. However, you must own the rights to the ISBN.

If you’re looking to use KDP’s free ISBN with another publishing service, it will not work. Our free ISBNs only work on KDP.

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