You can publish with your own ISBN or use a free ISBN from Chiify — see do you need an ISBN.
Changing it before publishing
Easy — just edit the ISBN field on the draft before you submit.
Changing it after publishing
This is sensitive. An ISBN is the unique product identifier stores key on, so swapping it on a live book can:
- Create a new listing (losing the old listing's reviews and rank), or
- Cause a conflict if the old ISBN is still active.
So change a live ISBN only when you genuinely must (for example you mistakenly used the wrong one), and expect the listing to reset.
Format rules
Each format needs its own ISBN — your ebook, audiobook, and paperback cannot share one. See do different formats count as separate books.
If you need to change a live ISBN, open a ticket so we can guide the cleanest path.
Still need help? Open a ticket from your dashboard or email [email protected] — a real person replies.