ISBN Converter
Convert between ISBN-10 and ISBN-13 formats instantly. Our bidirectional converter handles both directions automatically, ensuring your ISBNs work with any publishing platform or distribution system.
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Frequently Asked Questions
ISBN-10 is the older 10-digit format used before 2007. ISBN-13 is the current 13-digit standard that all new books must use. ISBN-13 starts with 978 or 979.
Most modern publishing platforms, databases, and distribution systems require ISBN-13 format. Converting ensures your book works with current systems.
Yes, the conversion follows the official ISBN standard. We add the 978 prefix and recalculate the check digit to create a valid ISBN-13.
Currently, our tool converts one ISBN at a time. Enter each ISBN-10 or ISBN-13 individually for conversion.
Yes, but only for ISBN-13s that start with 978. ISBN-13s starting with 979 cannot be converted to ISBN-10 format as they have no ISBN-10 equivalent.
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ISBN-10 Format (1970-2007)
The original ISBN system was created to uniquely identify books and streamline inventory management in the publishing industry. All books published before 2007 received ISBN-10 numbers, and many of these remain in circulation today.
10 digits with possible 'X' as check digit
ISBN-13 Format (2007-Present)
ISBN-13 was introduced to align with the global EAN-13 barcode standard and provide more numbering capacity for the growing publishing industry. Since January 2007, all new ISBN registrations use the 13-digit format, making it the current standard for book identification worldwide.
13 digits starting with 978 or 979 prefix