Free Activity Diagram Generator
Create UML activity diagrams for workflows with our free tool. Business processes and logic flows.
- Drag-and-drop diagram editor
- Standard UML activity symbols
- Decision nodes and branching
- Parallel flows with fork/join
- Export as PNG, SVG, or PDF
Frequently Asked Questions
What is an activity diagram used for?
Activity diagrams model the flow of activities in a system, showing the sequence of actions, decision points, and parallel processes. They're commonly used for business process modeling and software design.
What's the difference between activity and flowchart diagrams?
Activity diagrams are UML-specific and support advanced concepts like parallel flows (fork/join) and swimlanes. Flowcharts are more general-purpose and simpler.
Can I add swimlanes to organize activities?
Yes, you can add swimlanes to partition activities by role, department, or system component.