How Many ISBNs Does One Writer Need?

More than you realize.

An ISBN, short for International Standard Book Number, is a unique identifier for a particular version of a book in a specific format.

You will need one for each edition of your book, each format, and every translation. For example, if you use one ISBN for your paperback, here’s when you will need a new ISBN:

Fixing typos
No


Price change
No


Redesigned cover
Yes


Kindle version
Yes


Audio book
Yes


Hardcover
Yes


New publisher
Yes


New size
Yes


Translation
Yes


Adding a preface, introduction, appe...