QUDT CATALOG - Quantities, Units, Dimensions and Data Types Ontologies
This catalog lists the QUDT schema and vocabulary graphs and links to the current published specifications for each graph. The latest released version of each graph is available for download in Turtle format by omitting the version number from the URL. For example,
https://qudt.org/schema/shacl/qudt will always resolve to the latest released version of the QUDT SHACL schema graph.Schemas
5| # | Graph Type | Catalog Entry Title | Cataloged Graph | Modified | Documentation |
|---|---|---|---|---|---|
| 1 | SHACL schema graph | QUDT SHACL Schema | http://qudt.org/3.1.11/schema/shacl/qudt |
2026-02-19
|
Spec |
| 2 | SHACL datatype graph | QUDT SHACL Datatype Shapes | http://qudt.org/3.1.11/schema/shacl/datatype |
2025-04-02
|
Spec |
| 3 | SHACL overlay graph | QUDT SHACL Overlay | http://qudt.org/3.1.11/schema/shacl/overlay/qudt |
2026-02-19
|
Spec |
| 4 | Schema graph | QUDT OWL Schema | http://qudt.org/3.1.11/schema/qudt |
2026-02-19
|
Spec |
| 5 | Schema graph | QUDT OWL Datatypes | http://qudt.org/3.1.11/schema/datatype |
2025-04-01
|
Spec |
Vocabulary Graphs
7| # | Graph Type | Catalog Entry Title | Cataloged Graph | Modified | Documentation |
|---|---|---|---|---|---|
| 1 | Vocabulary graph | Units | http://qudt.org/3.1.11/vocab/unit |
2026-02-19
|
Spec |
| 2 | Vocabulary graph | Quantity Kinds | http://qudt.org/3.1.11/vocab/quantitykind |
2024-10-26
|
Spec |
| 3 | Vocabulary graph | Dimension Vectors | http://qudt.org/3.1.11/vocab/dimensionvector |
2026-02-19
|
Spec |
| 4 | Vocabulary graph | Constants | http://qudt.org/3.1.11/vocab/constant |
2026-02-19
|
Spec |
| 5 | Vocabulary graph | Prefixes | http://qudt.org/3.1.11/vocab/prefix |
2026-02-19
|
Spec |
| 6 | Vocabulary graph | Systems of Units | http://qudt.org/3.1.11/vocab/sou |
2026-02-19
|
Spec |
| 7 | Vocabulary graph | Systems of Quantity Kinds | http://qudt.org/3.1.11/vocab/soqk |
2026-02-19
|
Spec |
Single File Downloads
2| # | Graph Type | Catalog Entry Title | Cataloged Graph | Modified | Download |
|---|---|---|---|---|---|
| 1 | SHACL schemas and vocabularies | QUDT SHACL Collection - Version 3.1.11 | http://qudt.org/3.1.11/shacl/qudt-all |
2026-02-19
|
Download |
| 2 | OWL schemas and vocabularies | QUDT Collection - Version 3.1.11 | http://qudt.org/3.1.11/qudt-all |
2026-02-19
|
Download |