Free State Machine Diagram Online
Free State Machine Diagram Online
Visualize state transitions, finite automata, and system behavior with state diagrams.
What is a State Diagram?
A state diagram (also called a state machine diagram) shows the different states an object or system can be in and the transitions between those states. It's essential for modeling behavior in software, hardware, and process design, particularly for finite state machines and user interface flows.
Common Use Cases
- •UI state management - Model component states and transitions
- •Order processing - Track order lifecycle (pending → shipped → delivered)
- •Authentication - Visualize login states and session handling
- •Game development - Define character or game states
- •Embedded systems - Design hardware state machines
Syntax Quick Reference
| Element | Syntax | Description |
|---|---|---|
| Initial state | [*] | Starting point |
| State | StateName | Define a state |
| Transition | State1 --> State2 | State change |
| Labeled transition | --> State : Event | Transition with trigger |
| Composite state | state Name { } | Nested states |
| Fork/Join | <<fork>> | Parallel states |
Export Options
PNG Export
High-resolution images for documents and presentations.
SVG Export
Scalable vectors for web and further editing.
PDF Export
Print-ready format for professional documentation.
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Free Mermaid Syntax Cheat Sheet
All 21 diagram types in one PDF reference.
Frequently Asked Questions
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