Free Audio to MIDI Converter

The service listens to the recording and detects which notes play at each moment, where they start and end, and smooth pitch changes (pitch bend). The recognition engine is compact - about 1 MB - so it loads fast and runs right in your browser.

• A single instrument or voice - a vocal melody, guitar, piano, bass, violin, horns - gives the cleanest result.
• Chords are recognised too: the service hears several notes at once.
• A full mix with drums converts worse - notes from different instruments blend together. Isolate the part you need with the stem splitter first, then convert it to MIDI.

• Note splitting - how sharp a note onset must be. Lower gives more short and repeated notes, higher merges them into longer notes.
• Confidence threshold - how sure the service must be that it “hears” a note. Higher gives fewer stray notes (such as overtones), lower catches quiet notes.
• Minimum note length - shorter notes are dropped.
• Range - limits notes from below and above: handy, for example, to keep high overtones out of a bass line.

Settings apply instantly - no need to analyse the track again.

Notes in the MIDI file are placed in real time, and the tempo decides how they line up with the bar grid in your DAW (Ableton Live, FL Studio, Logic Pro, Cubase, Pro Tools, Studio One, Reaper, Bitwig). Enter the tempo of the track and the notes will match your project’s bars. You can find the tempo with the BPM & key finder.

Pitch bend is a smooth change of a note’s pitch: vibrato, guitar bends, vocal slides. Turn it on for vocals and solo lines if you want to keep them expressive. For chords and keys it is better off: in MIDI, pitch bend affects the whole channel at once and can shift neighbouring notes.

Transcription is almost never perfect: expect some extra short notes, missed quiet notes and octave errors caused by overtones. The MIDI usually needs a little manual editing in your DAW, but it saves most of the work - especially for melodies and chord parts.