How to Get an ISBN: A Practical Guide for Self‑Published Authors
Publishing your own book is exciting—but it also comes with a lot of small, confusing steps. One of the most common questions first‑time authors ask is:
“Do I need an ISBN, and how do I get one?”
This guide explains ISBNs in simple language, without jargon. You’ll learn what an ISBN is, when you actually need one, and exactly where to get it depending on your country.
What Is an ISBN?
An ISBN (International Standard Book Number) is a 13‑digit identification number assigned to a specific book edition. Think of it as your book’s global ID.
Every ISBN is unique. If two books have the same title but different ISBNs, bookstores and libraries can still tell them apart. That’s why ISBNs are critical for printed books.
An ISBN is also used to create the barcode that appears on the back cover of most physical books.
Why ISBNs Matter for Self‑Publishing
ISBNs are managed worldwide by the International ISBN Agency. When you register an ISBN, your book’s data is stored in official databases used by:
- Bookstores
- Libraries
- Wholesalers
- Online retailers
Without an ISBN, your printed book may not be accepted by many sales channels.
If you plan to publish paperback or hardcover books, an ISBN is almost always required.
What Do the Numbers in an ISBN Mean?
Here’s an example ISBN:
978‑0‑679‑80527‑3
Each part has a purpose:
- 978 / 979 – EAN prefix (used for books worldwide)
- 0 – Language or country group
- 679 – Publisher identifier
- 80527 – Specific book edition
- 3 – Check digit (used to prevent errors)
This structure helps systems instantly recognize your book.
Can One ISBN Be Used for Multiple Books?
No.
Each format and edition needs its own ISBN.
That means:
- Paperback → 1 ISBN
- Hardcover → 1 ISBN
- Revised edition → new ISBN
- Translation → new ISBN
ISBNs are never reused.
How to Get an ISBN (Step‑by‑Step)
Getting an ISBN is usually straightforward.
Step 1: Find Your Country’s ISBN Agency
ISBNs are issued by national agencies, not Amazon or printers (unless they offer a free ISBN).
Below are official ISBN agencies by country.
Official ISBN Agencies by Country
🇺🇸 United States
Bowker (MyIdentifiers)
Paid ISBNs. Publisher name is yours.
🇬🇧 United Kingdom & Ireland
Nielsen ISBN Store
https://www.nielsenisbnstore.com
Paid ISBNs. Required for UK publishers.
🇨🇦 Canada
Library and Archives Canada
https://ised-isde.canada.ca/site/canadian-isbn-agency
✔ Free ISBNs for Canadian residents.
🇦🇺 Australia
Thorpe‑Bowker
https://www.myidentifiers.com.au
Paid ISBNs.
🇮🇳 India
Raja Rammohun Roy National Agency
✔ Free ISBNs for Indian publishers.
🇩🇪 Germany
ISBN‑Agentur für die Bundesrepublik Deutschland
🌍 Other Countries
You can find your local agency here:
https://www.isbn-international.org/range_file_generation
Step 2: Apply for Your ISBN
Once you’re on your country’s official site:
- Create an account
- Enter publisher details
- Submit book information (title, author, format)
Some agencies issue ISBNs instantly. Others may take a few days.
Step 3: Generate a Barcode
After you receive your ISBN, you’ll need a barcode for your book cover.
You can generate one using a free tool like:
👉 Kidillus ISBN Barcode Generator
(Print‑ready PDF, PNG & SVG formats)
Free ISBN vs Paid ISBN: What’s the Difference?
Free ISBNs
Some platforms offer free ISBNs, including:
- Amazon KDP Print
- IngramSpark (discounted)
- BookBaby
- Blurb
Important: With free ISBNs, the platform is listed as the publisher, not you.
Paid ISBNs
When you buy your own ISBN:
- Your name or company appears as the publisher
- You can use the ISBN anywhere
- Your book looks more professional
For authors planning long‑term publishing, paid ISBNs are usually the better option.
Do You Actually Need an ISBN?
Ask yourself:
- Are you printing physical copies?
- Do you want full control over your publisher name?
- Will you distribute outside Amazon?
If yes → you need an ISBN.
If you’re publishing only an ebook on Amazon Kindle, you usually don’t.
Which Books Need an ISBN?
✔ Paperback books
✔ Hardcover books
✔ New editions
✔ Translated versions
✔ Physical audiobooks (CDs)
Which Books Do NOT Need an ISBN?
✖ Kindle ebooks
✖ PDFs sold on your own website
✖ Digital audiobooks (Audible, Apple Books)
Where Is the ISBN Printed?
- Copyright page
- Back cover (inside the barcode)
Including it properly makes your book look professional and credible.
ISBN vs ASIN: What’s the Difference?
- ISBN → Global book identifier
- ASIN → Amazon’s internal ID
Every Amazon book has an ASIN. Not every book has an ISBN.
Final Thoughts
ISBNs sound complicated, but they’re actually simple once you understand them.
If you’re publishing printed books, owning your ISBN gives you control, credibility, and flexibility. Pair it with a clean, scannable barcode, and your book is ready for global distribution.
Publishing is a journey—ISBNs are just one step, but an important one.
Happy publishing 🚀
