Worldwide

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A global library resource

Like the knowledge it describes, WorldCat grows steadily every day from the contributions of member libraries in the OCLC cooperative.

When you contribute library data to WorldCat, you help grow the world’s largest and most comprehensive catalog of library resources from around the world, with more than 318 million bibliographic records that represent more than 2 billion items held by participating libraries.

WorldCat facts and statistics

72,000

Number of libraries represented worldwide

2,122,041,198

Number of holdings

Every 10 seconds

How often a record is added

Over 485

Number of languages and dialects represented

Every 4 seconds

How often a request is filled through WorldCat Resource Sharing

318,206,057

Number of bibliographic records

Every second

How often WorldCat is searched via FirstSearch

170

Countries and territories with library holdings in WorldCat

We are a worldwide library cooperative, owned, governed and sustained by members since 1967. Our public purpose is a statement of commitment to each other—that we will work together to improve access to the information held in libraries around the globe, and find ways to reduce costs for libraries through collaboration. Learn more »