Are all ISBN numbers the same length?

An ISBN is an International Standard Book Number. ISBNs were 10 digits in length up to the end of December 2006, but since 1 January 2007 they now always consist of 13 digits. ISBNs are calculated using a specific mathematical formula and include a check digit to validate the number. It is always 3 digits in length.

Can 2 books have the same ISBN?

Two books may have precisely the same content but be issued different ISBNs because they come from different printings. Likewise, printing errors, etc., can in rare cases render two books different despite having the same ISBN.

What is the difference between isbn10 and isbn13?

ISBN 10 and ISBN 13 are two different systems used in systematic numbering of books between which some differences can be identified. ISBN stands for International Standard Book Number. ISBN 10 was the system that was used earlier whereas ISBN 13 is the new system. This is the main difference between the two systems.

How long is an ISBN number?

For more than thirty years, ISBNs were 10 digits long. On January 1, 2007 the ISBN system switched to a 13-digit format. Now all ISBNs are 13-digits long. If you were assigned 10-digit ISBNs, you can convert them to the 13-digit format at the converter found at this website.

What is the difference between 10 and 13-digit ISBN?

Why are ISBN numbers different for the same book?

An ISBN is assigned to each separate edition and variation (except reprintings) of a publication. For example, an e-book, a paperback and a hardcover edition of the same book will each have a different ISBN. The International ISBN Agency sometimes assigns such books ISBNs on its own initiative.

Is ISBN unique for every book?

ISBN is an acronym for International Standard Book Number. It’s a unique series of digits assigned to every book published in the world. Each different edition of the same book has its own ISBN. Every time a book is republished, it’s assigned a new ISBN.