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ISBN to BibTeX Converter

Free. No signup. Runs in your browser.

Paste an ISBN, get a clean @book entry. Subtitles join the title with a colon, dates are parsed down to the year, OpenLibrary and Google Books are both queried so books missing from one show up from the other, and acronyms in titles stay capitalised – ready to drop into your .bib without breaking the compile.

How to convert ISBNs to a BibTeX file online

Visit the ISBN to BibTeX tool page You’re already here. Bookmark thelatexlab.com/isbn-to-bibtex/ for next time.
Step 1
Paste your ISBN ISBN-13 (9780262035613) or ISBN-10 (0262035618), with or without hyphens. Up to 50 – one per line – for batch conversion. If you have an EAN/UPC barcode that isn’t an ISBN, it won’t resolve.
Step 2
Pick the output dialect BibLaTeX preserves UTF-8 for biber. Legacy BibTeX rewrites accents as LaTeX macros (Kr{\"a}mer) for older bibtex setups. Default is BibLaTeX.
Step 3
Convert, then copy or download Each entry renders with its inferred type and a per-row entry-type override. Switch @book to @inbook or @incollection per row if you’re citing a chapter. Use the per-row Copy button, or Copy all / Download .bib at the bottom for the full batch.
Step 4
Lookups happen in your browser – ISBNs go straight from your browser to OpenLibrary’s books API and (if needed) Google Books, never to our server. Entries that fail to resolve show up inline with the reason so you can fix or drop them without losing the rest of the batch.

Where most ISBN converters break

OpenLibrary alone misses lots of ISBNs OpenLibrary is contributor-maintained, so coverage is uneven for non-English titles, recent editions, and self-published books. Most free converters that query only OpenLibrary will return “not found” for ISBNs that are perfectly real – the book just isn’t in the database. The tool tries OpenLibrary first, then falls back to OpenLibrary’s separate search index, then Google Books, and only reports “not found” when all three miss.
3-source cascade OL → OL search → Google Books
Subtitles get dropped from the title field Both OpenLibrary and Google Books split Artificial Intelligence: A Modern Approach into title = "Artificial Intelligence" and subtitle = "A Modern Approach". BibTeX has no subtitle field on @book, so converters that read only title drop “A Modern Approach” silently. The tool joins them with a colon so the full title makes it into the entry.
Title: Subtitle joined at conversion
Dates arrive as prose, not years OpenLibrary’s publish_date is famously inconsistent: “2023”, “January 2023”, “January 1, 2023”, “2023-01-01”, sometimes just a month-year string. Converters that pass it through verbatim end up with year = {January 1, 2023}, which BibTeX accepts but every bibstyle then renders wrong. The tool extracts the four-digit year and drops the rest.
year only regex-extracted
Acronyms in titles get lowercased Computer-science and engineering titles are dense with acronyms – AI, DNA, HTML, SQL, CRISPR. Under plain, abbrv, and most bibstyles that case-fold titles, an unprotected title turns “AI: A Modern Approach” into “Ai: a modern approach”. The portable fix is wrapping all-caps tokens in braces. If you’ve ever debugged a “Missing } inserted” error from a manually-pasted title, this is the upstream cause.
{AI} applied at conversion
Edition strings and individual volume designators aren’t extracted – OpenLibrary’s edition data is sparse and Google Books rarely separates it. If you’re citing the 4th edition of a textbook or volume 2 of a series, add the edition or volume field by hand after copying. Citekeys are lastnameYearWord with collision handling.

Frequently asked questions

Either works. Books published before 2007 typically only have an ISBN-10; books after carry both. The tool accepts both forms with or without hyphens, and (when querying Google Books) prefers the ISBN-13 in the output entry because that’s the modern standard. If your bibstyle is picky about the form, search-and-replace after copying.

“Not found” means all three lookup paths (OpenLibrary’s books API, OpenLibrary’s search index, Google Books) returned nothing. This happens most often for self-published books, university-press titles outside Anglophone catalogues, very recent releases that haven’t propagated yet, and translations whose ISBN was registered in a smaller national agency. Check the ISBN with the publisher’s site to confirm it’s real, and if it is, you’ll need to enter the entry by hand following the @book field conventions.

@book is for citing the whole book – the tool’s default. @inbook is for citing a specific chapter or page range of a single-author book. @incollection is for a chapter in an edited multi-author volume (you’d add editor and booktitle fields). @collection describes the edited volume itself. Use the per-row entry-type override to switch on a per-entry basis, then add the chapter-level fields by hand.

Edition strings (e.g., “4th edition”) and individual volume designators aren’t extracted – OpenLibrary’s data is sparse and Google Books rarely separates them. If you’re citing the 4th edition of a textbook, add edition = {4} after copying. For multi-volume works, OpenLibrary’s guidance is that each volume should have its own ISBN, so paste those individually. For translations, the tool returns whatever metadata the queried database has – if you need both the original and the translator, you’ll need to merge two entries.

Free, no signup. ISBNs go directly from your browser to OpenLibrary and (if needed) Google Books – they never touch our server. The output exists in your browser session and disappears when you close the tab.

Yes. The references-from-Word path is covered in our references-conversion guide, and for the whole-thesis workflow (chapters, references, figures, the university template) see thesis LaTeX formatting. Email help.thelatexlab@gmail.com with the manuscript and target university template for a quote.

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