Create Class Diagrams Online with Creately ( UML )

Tools, Templates and Resources to Draw Class Diagrams Online

A UML class diagram shows a system's objects, their attributes, operations and relationships between objects. With Creately’s drag and drop interface and smart connectors you can draw class diagrams online with amazing ease.

Want to get feedback on your class diagram? Need a peer review? Our real-time collaboration features helps you share your class diagram with other's to instant feedback. You can even work together on the diagram and see each other's changes in real-time.

Stuck for ideas? Our professionally designed class diagram templates will help you get ideas for your own class diagrams and presents you with an already done template to get started fast.

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class-diagram Templates

UML Class Diagrams Explained

UML Class Diagrams are diagrams which represent the static view of an application. It describes the types of objects in the system and the static relationships between them.

Class Diagrams are not only used for visualizing and documenting different aspects of a system but also for constructing executable code of the software application.

UML Class Diagram Objects Explained

Check out the UML Class Diagram Objects page to learn about various class diagram objects and what they represent

Once you drag and drop the relevant objects Creately smart connectors will automatically detect the available relationships and provide you with a way to quickly set the relationship.

Examples and Using class-diagrams in the real world

The Relationships that exist between Classes

In a class diagram, obviously you can’t have classes just floating around; you need to see the relationship between them. Peruse the content below to see the types of relationships that exist between classes, along with their notation, and also what they actually mean.

Articles, Tutorials & Blog posts on class-diagrams

Simple Guidelines for drawing UML Class Diagrams

When it comes to system construction, a class diagram is the most widely used diagram. This diagram generally consists of interfaces, classes, associations and collaborations.