Audio to MIDI Converter

How to convert audio to MIDI

1. Load a recording. Drop in an MP3, WAV, M4A, FLAC, OGG or AAC file, or press Record and sing, hum or play straight into your microphone. Up to 10 minutes.
2. Say what it is. Pick Vocals / humming, Piano / keys, Guitar, Bass or Full song. Vocals and bass are read one note at a time. Piano and guitar keep chords.
3. Convert, listen, adjust. Press Convert to MIDI and the notes land on an 88-key piano as the recording plays. Switch between Audio and MIDI to compare them. Move any setting and the notes update on the spot, so you never convert twice.
4. Download the .mid. Drag it onto a track in Ableton, Logic, FL Studio, GarageBand, Cubase or Reaper and give it any instrument you like.

The conversion runs in your browser, so the recording never leaves your computer. It is free and needs no sign-up.

What kind of audio converts well

A converter listens for pitches and writes each one down as a note with a start, a length and a loudness. The fewer things sounding at once, the better it guesses.

• A hummed or sung melody. The most common use: capture an idea before you forget it, then play it with a synth.
• A voice memo of a riff. Phone recordings are fine for a single line, as long as the room is quiet.
• A guitar part. Single notes and chords both work. A clean tone reads better than heavy distortion.
• A bass line. Low notes are tracked one at a time and usually come out tidy.
• Solo piano or keys. Chords come through as stacked notes.

A whole band in one file produces a crowd of extra notes. If that is what you have, split the part you want first with the Stem splitter, the Acapella Extractor or the Piano Extractor, then convert that stem.

Tips for cleaner notes

• Pick the right type. Choosing Bass for a bass line makes the tool ignore everything above its range.
• Record dry. Echo and reverb get read as extra notes. If your recording has a lot of room sound, run it through the Reverb Remover first.
• Raise Shortest note to drop tiny blips, and lower Note sensitivity if you see clutter. If notes are missing, raise sensitivity instead.
• Keep Snap to beat on for a part that should sit on the grid. Turn it off for a loose, human feel.
• Use Keep pitch bends for slides and vibrato. Leave it off if you want plain notes.
• Transpose moves everything up or down by as many as 12 semitones before you download.

What to do with the MIDI file

A MIDI file holds no sound. It is a list of which key, when, for how long and how hard. That is why it is useful: put it on a piano, a synth or a drum machine and the same notes sound completely different. Fix wrong notes in the piano roll, change the key, slow the tempo, or print it as sheet music from your notation software. The file also carries the tempo the converter detected, so it lines up with your project more easily.

Want to turn a vocal hook into a synth lead? Convert it with Vocals / humming selected, drop it on a synth track, and edit from there.

If your source is an MP3, there is also a page just for that: MP3 to MIDI. For WAV files from a DAW or recorder, see WAV to MIDI.