ISBN Barcode Generator
Validate your ISBN and generate a print-ready barcode for your book's back cover. Supports both ISBN-10 and ISBN-13 formats.
ISBN-13
Auto-formats as you type. Also accepts ISBN-10.
Enter a valid ISBN-10 or ISBN-13 to generate a barcode
Example: 978-0-13-468599-1 or 0-306-40615-2
ISBN Basics for Authors
What is an ISBN?
The International Standard Book Number is a unique identifier for books. ISBN-13 (13 digits starting with 978 or 979) is the current standard. ISBN-10 (10 digits) is the older format but still accepted.
Do I Need an ISBN?
For Amazon KDP, ISBNs are optional for ebooks but recommended for print. For bookstores and libraries, an ISBN is required. Each format (paperback, hardcover, ebook) needs its own ISBN.
Barcode Placement
Place the barcode on the back cover, typically in the lower right corner. Ensure there's at least 0.125" of white space (quiet zone) around all sides. Standard size is 1.5" × 1".
Where to Get ISBNs
In the US, purchase from Bowker (myidentifiers.com). Amazon provides free ISBNs for KDP, but they can only be used on Amazon. For wider distribution, use your own ISBN.