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The easiest way to use DDC


Experience the power of the Dewey Decimal Classification (DDC) system on the Web! WebDewey gives you access to an enhanced version of the DDC database.

Let our demo show you how WebDewey works! WebDewey 2.0: an overview.

The new WebDewey is easier to use than ever and features:

  • All content from DDC 23, including regular updates (new developments, new built numbers, and additional electronic index terms)
  • An easy-to-navigate, simple user interface that is suitable for the novice as well as the power user
  • BISAC-to-DDC mappings
  • An easy-to-personalize screen display, often done with a single click
  • Continuous updating

Current WebDewey subscribers can access the new system with their existing authorizations and passwords. The old WebDewey interface will be available until mid 2012, at which time users will be redirected to the new service. Abridged 15 and Abridged WebDewey 2.0 will be available later in 2012.

Need to incorporate cuttering into your workflows? Dewey Cutter Software automatically provides cutter numbers from the OCLC Four-Figure Cutter Tables (Cutter Four-Figure Table and Cutter-Sanborn Four-Figure Table) when you input text. It works with Windows Millennium, 2000, and XP, and is available for download at no charge. Helpful installation and user instructions get you started with this useful add-on quickly.

Libraries that use the Library of Congress classification system and Library of Congress subject headings (LCSH) are encouraged to consult the latest data from the Classification Web online service available from the Library of Congress.

See the WebDewey Number Building FAQs.

All copyright rights in the Dewey Decimal Classification system are owned by OCLC.
Dewey, Dewey Decimal Classification, DDC, OCLC and WebDewey are registered trademarks of OCLC.