Conversion table

On this page you can convert an ISBN from 10 to 13 digits yourself.

Procedure for conversion:

Put in the first 9 digits in the 10-digit ISBN-number Control number
Complete lists with converted ISBNs and GTIN-(EAN) codes can be obtained from ISBN Norway.

– 978 is entered by default

– Enter the first 9 digits of the ISBN to be converted, without hyphens

– Press “Calculate”

– The new check digit will appear in the box labelled “Check digit”

– You now have a new 13-digit ISBN

– Insert hyphens after 978 and continue as they are in the 10-digit ISBN, like this: ISBN 978-82-05-33018-4