Direct comparison
ISBN vs. ISSN: What's the Difference?
ISBN identifies a book edition/format; ISSN identifies a serial's title. Compare formats, assigning agencies, and the monograph-series edge case.
Side-by-side comparison
| Dimension | ISBN | ISSN |
|---|---|---|
| What it identifies | A specific edition and format of a book or standalone (monographic) publication | The title of a continuing serial (journal, magazine, newspaper), independent of individual issues |
| Governing standard | ISO 2108 | ISO 3297 |
| Format | 13 digits (978/979 prefix) since Jan 2007; legacy 10-digit codes remain valid | 8 digits, NNNN-NNNC, with a modulus-11 check digit (C can be X) |
| International coordinator | International ISBN Agency | ISSN International Centre (CIEPS), Paris |
| Who assigns in the U.S. | Bowker (myidentifiers.com) sells number blocks; publishers self-assign | Library of Congress (free, via ISSN Uplink) |
| Assigned per... | Edition + format (hardback, paperback, ebook each get their own) | Title + medium (stays the same across all issues/volumes) |
| Changes on reprint? | No, unless it's a genuinely new edition or format | No — only a substantial title change requires a new ISSN |
| Multiple formats of the same work | Separate ISBN per format | Separate ISSN per medium, linked via an ISSN-L |
| Assigned to chapters/articles? | No — book-level only | No — title-level only (issues/articles are not separately identified) |
| Implies peer review or quality? | No | No |
Common questions
FAQ
Can a publication have both an ISBN and an ISSN?+
Yes. The clearest example is a monograph series: each individual volume gets its own ISBN, while the series itself can be registered for an ISSN because new volumes keep being added indefinitely, the same way a journal adds new issues.
Do ebook and print editions need separate ISBNs?+
Yes — ISBN is assigned per format as well as per edition, so a print edition, ebook edition, and audiobook edition of the same title each get their own ISBN.
Does a journal article get its own ISBN or ISSN?+
No. ISBNs are book-level and ISSNs are title-level; individual articles are more commonly identified with a DOI instead.
Is having an ISSN proof that a journal is peer-reviewed?+
No. An ISSN only confirms the title and publisher are registered — it says nothing about peer review, editorial standards, or database indexing.
Going deeper
