Register and Copyright Your Book Buy ISBNs
ISBNs help books get discovered!
An ISBN ensures your book's information will be stored in the Books in Print database which is consulted by publishers, retailers and libraries around the world.
The ISBN is a unique identifier for a book or other book-like product (such as an audiobook) that specifies its format, edition, and publisher.
Why should I buy an ISBN?
There are many reasons to purchase an ISBN for your title, including:
How many ISBNs do I need?
You will need one ISBN for each edition and format of your book. The ISBN identifies the publisher as well as the specific book title, edition and format (hardback, paperback, ePub, PDF, Mobi, Audio…). Any variation of a book would require the use of a unique ISBN to identify it properly. This allows retailers to help the customer understand exactly which version of a title they are purchasing. So, you should consider:
And remember:
Why should I buy my ISBNs from Bowker?
Bowker is the official ISBN Agency for publishers physically located in the United States and its territories (Puerto Rico, Guam, US Virgin Islands, Northern Mariana Islands, American Samoa, as well as military bases and embassies. If an ISBN is obtained from a source other than the official ISBN Agency, it might not identify the publisher of the title accurately. This can have implications for doing business in the publishing industry supply chain.
Once you set up your account with us, your ISBNs will be added to your account immediately at purchase (Title Assignment Instructions). You will be recognized as the publisher of all book titles associated with those ISBNs. For more information about the ISBN standard, or if you are looking for the official ISBN Agency in your jurisdiction, visit the International ISBN Agency.
In order to purchase and manage your ISBNs on Myidentifiers, you must first set up an account with us.
10 ISBNs
Why this is your best value:
  • Each format of your book requires its own ISBN
  • Most books average two to three ISBNs to accommodate all published formats
  • You will have enough ISBNs for multiple books
  • Savings! You’re getting your ISBNs at only $29.50 each
  • ISBNs never expire; use them as needed
Add to Cart
  • Identify one book in one format
  • Get Into Books In Print
  • Register yourself as Publisher
  • Appear in relevant databases
Add to Cart
100 ISBNs
  • Save when publishing 4+ books
  • A great starter for Indie Publishers
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1,000 ISBNs
Blocks of 1,000 ISBNs are generally purchased by independent or small publishers, and is a quantity usually sufficient for publishing multiple versions of approximately 200 books (or editions of books).
Add to Cart
Buy ISBNs with Barcodes
10 ISBNs
5 Barcodes
1 QRPlus Code
  • Save when purchasing multiple ISBNs and barcodes
  • Have enough ISBNs and barcodes for multiple book formats
  • Make your printed book interactive with a QRPlus code
Add to Cart
10 ISBNs
1 Barcode
  • Get savings on multiple ISBNs
  • Have enough ISBNs for multiple books or formats
  • A barcode makes your printed book easier to sell
Add to Cart
1 Barcode
  • The ISBN is the global standard for identifying titles
  • Having a barcode on your book will facilitate automated sales and inventory tracking
Add to Cart
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