List of Dewey Decimal classes


The Dewey Decimal Classification is structured around ten main classes covering the entire world of knowledge; each main class is further structured into ten hierarchical divisions, each having ten sections of increasing specificity. As a system of library classification the DDC is "arranged by discipline, not subject", so a topic like clothing is classed based on its disciplinary treatment within the conceptual framework. The list below presents the ten main classes, hundred divisions, and thousand sections.

Class 000 – Computer science, information & general works