Berntsen Library: Dewey Decimal Classification to Library of Congress Classification: Home

Note about this Guide

This guide exists as a self-help reference resource. We are unable to provide any cataloging assistance or answer cataloging questions.

What's in this Guide

What do you do if you have a Dewey Decimal Classification (DDC) number, but you are looking for books in the Library of Congress Classification (LCC) scheme? See the following pages in this guide for help.

DDC to LCC - Mapping Dewey Decimal numbers to corresponding Library of Congress numbers

LCC to DDC - Mapping Library of Congress Classification numbers to corresponding Dewey numbers.

Search by Title, Author, Subject Heading, or Standard Number

Search Worldcat.org
Search WorldCat for the book and click-through to library catalogs to see what call number they list. This method may prove more successful for some books than the LC catalog search.
Search the LC Catalog
Search by title of the work to find its entry in the LC Catalog in which you may find listed LC call numbers and DD class numbers. Not all books in the LC Catalog will have this information listed, and you may be unable to find recently published works.
LibraryThing MDS (DDC)
On the Library Thing website, you can browse titles using their interactive Dewey Decimal system to narrow down the classification number and see related LCC numbers in the sidebar to the right.
Additionally, you can search LibraryThing by book title and find both DDC and LCC numbers (when available) in the righthand sidebar on the book's webpage.
LibraryThing LCC
You can browse books through the layers of the LCC system on LibraryThing and see related Dewey numbers in the sidebar to the right.
http://classify.oclc.org/classify2
NOTE: Classify was discontinued on January 31, 2024. OCLC Cataloging and Metadata subscribers can use WorldShare Record Manager or the WorldCat Metadata API, available as part of the subscription, to perform similar searches to find classification numbers.

Dewey Decimal Classification Handout and Library of Congress Classification Handout

Dewey Decimal list - The basic categories of the Dewey Decimal Classification scheme.

Dewey Decimal List
This list contains the "tens" and "hundreds" in the Dewey Decimal Classification scheme. Use this handout as a guide to browse the Reference collection on the main floor of the Berntsen Library, in order to locate a relevant reference article.

DDC Summaries
Tens, Hundreds, and Thousands in the Dewey Decimal Classification

Library of Congress list - The basic categories of the Library of Congress Classification scheme.

Library of Congress List

Library of Congress Classification PDF Files
This page provides print-ready PDF files of Library of Congress classification schedules. Data for these files was selected in May 2024.