What this tool is good for
This tool converts audio formats such as MP3, WAV, OGG, AAC, and WMA into .mid files for AI-assisted music transcription. MIDI stores note events rather than raw waveforms, so the exported files are usually very small.
The audio file itself is processed inside the browser instead of being uploaded as transcription input. Depending on cache state, the page may still need to load model files before conversion starts.
Supported formats and output
- Input: common audio files such as MP3, WAV, OGG, AAC, and WMA.
- Output: a standard MIDI file that you can download as .mid.
- Processing time depends mainly on local device performance and the size of the input audio.
How to use it
- Click to select an audio file or drag it into the upload area.
- The conversion starts automatically after the file is loaded.
- Download the generated .mid file when processing finishes.
Conversion notes
- The page may be temporarily non-interactive while the model is working; that is normal.
- A full song can take one to two minutes depending on your device.
- The first run can take longer if the transcription model still needs to be fetched and cached locally by the browser.
- The current implementation significantly reduces UI freezing compared with earlier versions, so long conversions are more stable than before.
FAQ
What audio files work best for audio to MIDI conversion?
Clean recordings with a clear melody, isolated instrument, or simple arrangement usually convert best. Dense mixes, heavy effects, drums, and background noise can reduce transcription accuracy.
Why is the generated MIDI not identical to the original audio?
MIDI stores estimated notes, timing, and velocity rather than the original waveform. AI transcription approximates the performance, so complex chords, bends, and layered instruments may need manual cleanup.
Can I edit the downloaded MIDI file?
Yes. Open the .mid file in a DAW, notation program, or MIDI editor to adjust notes, quantization, tempo, instruments, and arrangement details after conversion.
Will my audio be uploaded to a server?
No. The conversion on this page runs locally in your browser, so the original audio is not uploaded as transcription input. This makes the tool useful for workflows that need local processing.