From ISBN to Shelf-Ready Call Number in Under a Minute

Every modern book carries an ISBN — a unique 13-digit identifier printed near the barcode. That number is the key that unlocks fast, accurate cataloging. Here is the full journey from ISBN to a label you can stick on the spine.

Step 1 — Capture the ISBN

Type the ISBN or scan the barcode with your phone's camera. A valid ISBN-13 starts with 978 or 979. CataMarco accepts both ISBN-10 and ISBN-13 and normalizes them automatically.

Step 2 — Look up the bibliographic record

The ISBN is matched against trusted databases (such as OpenLibrary and Google Books) to retrieve the title, author, subject, publisher, and publication year. Good cataloging tools chain multiple sources so a result is found even for obscure titles.

Step 3 — Classify the subject

The retrieved subject is mapped to a classification code — Dewey Decimal or MARC 21 — which determines where the book lives on the shelf.

Step 4 — Generate the cutter number

The author's name produces a cutter number that alphabetizes the book within its class. The system also checks for collisions so two different books never receive the exact same call number.

Step 5 — Print the spine label

The finished call number is formatted onto a print-ready label sheet (Avery 5160, Avery 5163, or Dymo) and you are done — shelf-ready in under a minute.