ISBN Converter

Convert between ISBN-13 and ISBN-10 formats. The tool automatically detects the format and converts accordingly. Note that only ISBN-13 with prefix 978 can be converted to ISBN-10.

About ISBN Conversion

The ISBN-13 replaced the ISBN-10 as the standard in 2007. The ISBN-13 format is 13 digits long, while the ISBN-10 format is 10 digits long. ISBN-13 numbers begin with a 978 or 979 prefix, which identifies them as book identifiers from the EAN.UCC numbering system.

This converter tool helps you switch between these formats. Please note that ISBN-10 conversion from ISBN-13 is only possible for ISBN-13s that start with the prefix 978.

ISBN Validation

How to Use the ISBN Converter

  1. Enter your ISBN number(s) in the input field.
  2. Click the "Convert ISBN" button.
  3. The tool will automatically detect whether each ISBN is ISBN-10 or ISBN-13 and convert it to the other format.
  4. For bulk conversion, use the "Multiple ISBNs" tab and enter one ISBN per line.
  5. ISBN Converter Tool doesn't validate the ISBN. To Validate a ISBN use ISBN Validator