Free Timing Diagram Generator
Create UML timing diagrams with our free tool. State changes over time with waveforms.
- Signal waveform editing
- State value timelines
- Duration constraints
- Event markers
- Multiple signal alignment
- Export as PNG, SVG, or code
Frequently Asked Questions
When should I use timing diagrams?
Use them for time-critical interactions - hardware protocols, real-time systems, or when exact timing matters. For general behavior, sequence diagrams are usually clearer.
Can I show both digital and analog signals?
Yes! Digital signals show discrete states (high/low). Value lifelines can show numeric or analog values. Mix both as needed for your system.
How do I show timing constraints?
Add duration constraints between events using the constraint tool. Annotate minimum, maximum, or exact timing requirements between state changes.