State Machine Diagram Maker
Describe how something changes over time — an order, a payment, a traffic light — and get a UML state diagram with labelled transitions.
- States with entry / do actions
- Transitions labelled event [guard] / action
- Start, end and choice pseudo-states
- Automatic layout
How it works
- Describe the object and its life
- The AI drafts states and transitions
- Edit labels and add states
- Export it
Try it with
- Online order lifecycle
- Traffic light
- User login session
- Food delivery order
Frequently asked questions
Is it free?
Yes. Drawing by hand is always free and every account includes free AI credits. AI Flowchart Pro adds unlimited AI generation and every diagram type.
Can I export it?
Yes — PNG, SVG, PDF, PowerPoint with an editable slide, Mermaid code and draw.io. You can also share a live link or present it full screen.