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

ISBN stands for International Standards Book Numbers.

In 2007 a change was made to only have 13 digit ISBN numbers. The old ISBN-10 numbers are still valid for older titles, but for all new books the ISBN 13 standard is preferred.

The change is pretty straightforward as it is solely to preface 978 of the existent numeral and compute the spic-and-span checksum utilizing the ISBN-13 set of rules. It is possible to convert ISBN 10 into ISBN 13 by using software that is freely available on the internet.