MIDIFLOW

What it does

Convert MP3, WAV, M4A, FLAC or OGG audio to editable MIDI for free. Polyphonic transcription runs locally in your browser with no upload or signup.

Free online audio to MIDI converter for MP3, WAV and M4A recordings. Preview detected notes, adjust the result and download MIDI. No upload or signup.

Turn a recording into MIDI notes you can hear, download and edit in your music software. Free to use, no signup, and your audio stays on this device. For the cleanest notes, start with one instrument or one vocal line rather than a finished full mix. 6.5-second synthetic melody · a workflow demo, not an accuracy benchmark. The selected file is {size}. MIDIFLOW does not upload it or impose a server limit, but very large files can run out of memory, especially on a phone. Compare the original with a simple synth preview of the detected notes. The preview does not reproduce the original sound or pitch bends. Too many or missing notes? Apply threshold — increase it to keep fewer, more confident…from audiomidi.org

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