What programming languages are supported?

UML class diagrams are language-agnostic and can represent Java, Python, C#, TypeScript, C++, PHP, and any object-oriented codebase.

Can I show abstract classes and interfaces?

Yes. Mention which classes are abstract or interfaces, and AI will apply correct UML notation.

Is this useful for database or ORM design?

Yes. Class diagrams can model entities, relationships, and data structures before implementation.

AI-Powered Class Diagram Generation

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Create UML Class Diagrams with AI

Describe your classes, attributes, methods, and relationships, and AI instantly produces a clean UML class diagram—perfect for system design, documentation, and architecture planning.

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Try Class Diagram Maker

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Current selected: Class Diagram

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Create Class Diagrams in 3 Steps

From text description to structured UML diagram

Describe Classes

List your classes, properties, methods, inheritance patterns, and relationship types in plain text.

AI Generates Diagram

AI creates a UML-compliant class diagram including associations, compositions, aggregations, and inheritance.

Use for Design

Export the diagram for software architecture, API design, onboarding, or technical documentation.

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Class Diagram Features

Object-oriented design made simple with AI

UML Standard Notation: AI uses industry-standard UML notation for clear, consistent class diagrams.
Inheritance Visualization: Easily show parent-child relationships, interfaces, and abstract classes.
Relationship Types: Display associations, compositions, aggregations, and cardinalities.
Complete Class Structure: Include class attributes, methods, visibility modifiers, and optional type annotations.

Class Diagram Maker FAQs

What programming languages are supported?: UML class diagrams are language-agnostic and can represent Java, Python, C#, TypeScript, C++, PHP, and any object-oriented codebase.
Can I show abstract classes and interfaces?: Yes. Mention which classes are abstract or interfaces, and AI will apply correct UML notation.
Is this useful for database or ORM design?: Yes. Class diagrams can model entities, relationships, and data structures before implementation.