ISBN Generator
BooksGenerate valid ISBN-10 and ISBN-13 numbers with correct check digits. Perfect for publishing and library system testing.
ISBN-13
The modern standard for book identification.
ISBN-10
Older format, still used for legacy systems.
978-8-2517-6527-5
What is This Tool?
An ISBN generator creates valid-format International Standard Book Numbers in both ISBN-10 and ISBN-13 formats. Each generated ISBN includes correct group identifiers, publisher codes, and check digits calculated using the proper ISBN algorithm.
ISBNs are unique numeric commercial book identifiers. ISBN-13 uses EAN-13 barcodes (prefix 978 or 979), while legacy ISBN-10 is still widely used. The check digit algorithms differ: ISBN-10 uses modular 11 arithmetic, ISBN-13 uses alternating weight modular 10.
Common Use Cases
Publishing Software
Test book catalog databases, library management systems, and publishing platform features with properly formatted ISBNs.
E-commerce Testing
Validate ISBN input fields, barcode scanning features, and book lookup APIs in online bookstore applications.
Library Systems
Populate test catalogs for library management software, MARC record processing, and inter-library loan systems.
Barcode Testing
Generate ISBN-13 numbers for testing EAN-13 barcode generation, scanning accuracy, and product lookup systems.
Frequently Asked Questions
Are generated ISBNs registered?
No. Generated ISBNs follow correct formatting and check digit rules but are not registered with any ISBN agency. Do not use them for real publications.
What is the difference between ISBN-10 and ISBN-13?
ISBN-10 is the legacy 10-digit format. ISBN-13 is the current standard, compatible with EAN-13 barcodes. All new ISBNs are ISBN-13, typically starting with 978.
Do generated ISBNs pass validation?
Yes. Each ISBN is generated with a mathematically correct check digit, so they pass standard ISBN validation algorithms.