Free · Studio · 2026-10-15
MIDI Note & Frequency Reference
For Learner, teacher, arranger or producer. Note names, MIDI numbers and frequencies are repeatedly looked up when preparing technical sessions.
Runs locally in your browser. No account, payment, upload or connected AI. Use non-sensitive information.
Your working context
Use it well
Choose an inclusive MIDI range and A4 tuning. The tool calculates equal-tempered frequencies using A4=MIDI 69; it does not measure or tune an instrument.
- Load the fictional example to learn the input format.
- Replace it with your non-sensitive context.
- Use Guided setup for staged field suggestions, then validate.
- Review before downloading a report, CSV or PDF.
The offline application includes the same deterministic guidance and generation. No model or external service is connected.