Use case diagram maker

Use Lucidchart to collaborate on use case diagrams and define the relationship between users and your system’s core functionalities. Establish project scope and visualize high-level requirements in minutes.

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Easy, intuitive use case diagrams

Create and share a use case diagram to align stakeholders and developers on your system’s primary goals.

Align on system scope

Use case diagrams bridge the gap between technical requirements and business goals. Provide a clear overview of who interacts with your system and exactly what they want to achieve.

Visualize the user journey

Use industry-standard symbols for actors and system boundaries. Precisely map out inclusions, extensions, and generalizations.

Leverage Lucid AI

Use Lucid AI to create UML diagrams faster than ever. Simply enter text prompts to generate professional visuals and then iterate until you have the exact documentation you need.  
Generate Flowcharts With AI in Lucidchart

Collaborate in real time

Invite people to view, edit, or give real-time feedback on your UML diagram using comments and @mentions. Review individual contributions by enabling collaborator colors, and use revision history to see changes or revert to a previous version.

Boost productivity with 100+ integrations

Connect Lucidchart to apps from leading providers like Google, Microsoft, and Slack. Explore the Lucid integrations marketplace for apps to streamline communication, strategic planning, task management, and more.

Lucidchart feature highlights

Real-time collaboration

Streamline work by enabling multiple collaborators to create and edit the same diagram at once.

Lucidchart feature highlights

Streamline work by enabling multiple collaborators to create and edit the same diagram at once.

UML use case diagram templates and examples

Choose a customizable template to create a UML use case diagram online.

Getting started in Lucidchart

Getting Started in Lucidchart

Follow along with this video tutorial and learn how to make any type of diagram in Lucidchart.

Why teams choose Lucidchart

As an intelligent diagramming application, Lucidchart provides simple yet powerful capabilities for visualizing information.

Collaboration. Bring teams together side by side on a shared canvas from anywhere in the world.

Alignment. Build transparency and shared understanding of how a team or company works.

Large-scale change. Increase visibility, standardization, and knowledge sharing across your entire org.

End-to-end workflows. Upgrade to the Lucid Suite for a complete, connected visual collaboration solution.

What is a use case diagram in UML?

A UML use case diagram demonstrates the different ways that a user might interact with a system. By mapping the relationships between actors and their objectives, you can define the project scope and ensure the final design aligns with the needs of every stakeholder.

How to create a use case diagram

Additional Lucidchart resources

Frequently asked questions about activity diagrams

Everything you need to make a diagram

In addition to our online use case diagram tool, Lucidchart offers support and training resources to help you branch out to any type of diagram.

Lucid Training