Audio to MIDI: turn MP3 & WAV into editable MIDI

Turn audio ideas into editable MIDI drafts, then clean and export them for your DAW.

Make room for your next melody

Drop one audio file, or several at once

Works best on a clear single instrument or one melody line. Pick a 15–60 second section for the fastest, most accurate draft.

  • .mp3 · .wav · .ogg · .flac · .m4a · .aac
  • up to 30.0 MB
  • up to 3 minutes

A full song is fine: you can convert its first 3 minutes. For a later section, or a WAV over 30.0 MB, export just that part, or save it as an MP3.

Converted in your browser — your audio is never uploaded, and the export is free.

A folder of clips? Select them all at once, or open the batch converter.

No file handy? Try one of ours:

Best on a clear single instrument or one melody line. Dense mixes and heavy reverb give a rough sketch at best — hear an example of that before you decide whether this fits your material.

Before and after

Audio to MIDI for voice, piano and guitar

Each instrument fails in its own way, so each gets its own clip. Play the recording, then convert the same clip and compare it with the MIDI. The last one is a case the model handles badly, on purpose.

Voice to MIDI

Hum, sing or whistle the idea into your phone, then turn the vocal melody into MIDI notes you can put on any instrument.

Works best on: One voice, close to the mic, in a quiet room, with no backing track playing.

  • Vibrato on a held note can chop it into several short notes of the same pitch. "Merge repeated notes" joins them back up.
  • A vocal inside a finished song converts along with everything else in the mix. Use an isolated vocal stem; this tool does not separate stems.

Original: sung line

Runs in the converter above. Flip Original / MIDI while it plays to hear the difference.

Piano to MIDI

Turn a recorded piano part — a melody, a bass line, a simple chord pattern — back into notes you can edit, re-voice or quantize.

Works best on: Single-note lines and sparse chords from a dry recording or a bounced piano plugin.

  • Sustain pedal makes notes ring long; expect to trim note ends.
  • Dense voicings lose inner notes, and a strong overtone can show up an octave above the note you played.

Original: piano melody

Runs in the converter above. Flip Original / MIDI while it plays to hear the difference.

Guitar to MIDI

Record a riff or an arpeggio and get it as MIDI, so you can double it with a synth or rewrite it in the piano roll.

Works best on: A clean or DI signal, single notes and picked arpeggios, recorded without effects.

  • Strings ringing into each other come out as overlapping, longer notes. "Trim overlaps" and "merge repeated notes" help.
  • Distortion adds so many harmonics that the notes underneath get lost. Convert the DI track, not the amp sound.

Original: guitar arpeggio

Runs in the converter above. Flip Original / MIDI while it plays to hear the difference.

A full mixHard case

Five-note pad chords, a melody on top, added reverb and a noise floor. Closer to a finished mix than to a clean take.

Expect a rough sketch at best: missed inner voices, extra notes smeared by the reverb tail, and an unreliable melody line. Use this to judge whether the tool suits your material before you pay for anything.

Original: dense mix (hard)

Runs in the converter above. Flip Original / MIDI while it plays to hear the difference.

See the full results and test conditions

How it works

Four steps, all in the browser

Nothing is uploaded and nothing is queued on a server. What changes between jobs is the material, not the steps.

  1. 1

    Pick a section

    Load an MP3 or WAV and drag the handles to the 15–60 seconds you actually want. Shorter sections convert faster and more accurately than whole tracks.

  2. 2

    Compare it to the original

    Switch between the recording and the transcribed MIDI without losing your place. This is the fastest way to tell whether a draft is worth editing.

  3. 3

    Fix what is wrong

    Adjust sensitivity, note length and pitch range, drop short blips, merge doubled onsets and quantize as lightly as you like. Reset restores the raw transcription.

  4. 4

    Export to your DAW

    Download a standard .mid file with the tempo written in, so the notes land where you expect in FL Studio, Ableton, Logic or anything else.

What producers convert, and what to expect

Piano and keys

One line at a time is the best case for this tool. Sustain pedal and ringing chords are what cost you accuracy.

Turn on "trim overlaps".

Guitar

Single-note riffs and arpeggios convert well. Strummed chords, palm mutes and heavy distortion read as extra notes.

Record clean DI, not a mic on an amp.

Voice and humming

Steady notes with clear changes work. Slides, breathiness and vibrato produce short scattered notes.

Minimum note length ≈ 150 ms.

Loops and samples

Get the notes of a loop you like the shape of, then rebuild it with your own sounds instead of using the recording.

Convert one bar, repeat it in the DAW.

Formats, limits, privacy

What goes in, what comes out, where it happens

Max file size
30 MB
Max file length
3 minutes
Per conversion
60 seconds

A pile of clips? Convert them in one run

Batch takes up to 10 files of up to 3 minutes each, runs them through one set of settings, and hands back every .mid in a single ZIP. Still converted in your browser. Batch is part of the Project Pass, $7 for 7 days; single files stay free.

Open the batch converter

Formats it reads

MP3
What most people have on hand, so it is the format this tool is tuned for. Compression costs you a little: very quiet notes and fast passages survive better in a lossless file.
WAV
The best input. An uncompressed bounce straight out of your DAW, one instrument, no master-bus compression or reverb, gives the cleanest note onsets to work with. WAV to MIDI converter
FLAC, M4A, AAC, OGG
All accepted, decoded by your browser before conversion. If a file will not decode, the browser lacks that codec — re-export it as WAV and it will work.
Output: a standard .mid
Note pitch, start, length and velocity on one track, with the tempo written into the header. It opens in any DAW, notation app or hardware sequencer.

Your unreleased material stays yours

Converted on your machine
The model is about 1 MB and runs in the page. Your file is read from disk and processed locally — there is no upload step and no server queue.
No file names in analytics
Usage events record that a conversion started, finished or failed, and roughly how long it took. They never record what you converted.
Nothing to delete later
Because your audio never arrives here, there is no copy to ask us to remove. Closing the tab is the whole cleanup.

Full detail in the privacy policy.

FAQ

Audio to MIDI, answered honestly

Including the parts that do not work. You will find out anyway the first time you convert a full mix.