MusicGeneratorAI

How This MP3 to MIDI Converter Works

This MP3 to MIDI converter runs Spotify's open-source Basic Pitch model inside your browser tab. It decodes your file to mono audio, estimates which pitches sound at each moment, and groups them into notes with a start time, length, and velocity. Because the model is polyphonic, overlapping notes stay separate instead of collapsing into one line. The notes are written to a single-track standard MIDI file you can open in a DAW.

Close view of a red stage keyboard with rows of knobs above the piano keys

What the MP3 to MIDI Converter Gives You

Notes, tempo, and timing you can edit in a DAW.

Black and white macro of piano keys with a shallow depth of field

Polyphonic Note Detection

Chords and overlapping lines come out as separate MIDI notes, each with its own pitch, timing, and velocity. Everything lands on one track, so split the parts by hand in your DAW.

Key Features

  • Chords & Overlap

    Several notes at once, not only the top line

  • Velocity

    Note loudness carries into the MIDI

  • Piano Roll Preview

    Check the notes before you download

Why Use This MP3 to MIDI Converter

Private, polyphonic MP3 to MIDI conversion, free to try.

01Polyphonic

Chords Included

Overlapping notes stay separate instead of collapsing into one line.

02Private

Runs in Your Browser

Decoding and transcription happen on your device. Your file is never uploaded.

03Detail

Pitch, Timing, Velocity

Every note carries its start, length, and loudness.

04DAW

Standard MIDI File

Download a .mid that DAWs and notation apps can open.

05Control

Modes and Sliders

Three modes plus sensitivity and minimum note length.

06Free

No Signup, No Credits

Files up to 80 MB. Clips up to 2 minutes on desktop, 45 seconds on mobile.

Who Uses an MP3 to MIDI Converter

Recover notes from a recording, then edit them.

Finger pressing the lit pads of a MIDI pad controller beside a laptop

Producers & Beatmakers

Run a loop or riff through the converter to recover its notes, then swap the instrument or re-voice the hook in your DAW.

Examples

  • Re-voicing a riff
  • Hum to bassline
  • Rebuilding a synth lead
  • Chord stab to MIDI
Hands fingering chords on an acoustic guitar

Songwriters & Composers

Record a sung or hummed melody and run MP3 to MIDI on it. Expect to fix a few notes, then keep the idea as an editable MIDI file.

Examples

  • Voice memo to melody
  • Piano sketch to MIDI
  • Topline to notes
  • Demo arrangement
Open sheet music in a red folder with blurred lights behind

Students & Transcribers

Convert a short solo passage and read the notes off the piano roll to check your ear-training guess or study phrasing.

Examples

  • Ear-training check
  • Solo guitar study
  • Melody on a piano roll
  • Notation draft
Hand resting on piano keys in soft light

Players & Arrangers

Hear a chord voicing on a record? Convert a short clip in Chords mode, read the notes, and confirm them by ear.

Examples

  • Jazz voicings
  • Piano cover start
  • Bassline capture
  • Reharmonizing

Convert MP3 to MIDI in Three Steps

Add a file, pick a mode, download the .mid.

  1. 1
    Step

    Add Your Audio

    Drop in an MP3, WAV, FLAC, OGG, AAC, M4A, or WebM file, or press Try with a sample.

  2. 2
    Step

    Pick a Mode and Convert

    Choose a mode, adjust sensitivity if you like, then press Convert to MIDI to start the MP3 to MIDI conversion.

  3. 3
    Step

    Preview and Download

    Check the notes on the piano roll, then download the .mid file.

MP3 to MIDI Converter FAQ

Straight answers about what the converter can and cannot do.

How do I convert MP3 to MIDI here?

Add your file or press Try with a sample, pick a detection mode, press Convert to MIDI, and download the .mid file. Files can be up to 80 MB, and clips up to 2 minutes on desktop or 45 seconds on mobile.

Is this MP3 to MIDI converter free, and do I need an account?

The MP3 to MIDI converter is free. There is no signup, no login, and no credits are used.

Is my audio uploaded for MP3 to MIDI conversion?

No. Decoding and transcription run in your browser with the Basic Pitch model, which loads from this site. Your audio is not sent anywhere.

Will it work on a full song with vocals and drums?

MP3 to MIDI suits one instrument or one voice, and it cannot split a mix into separate parts. Full mixes with drums and effects give noisier results, such as extra notes, octave slips, and drum hits read as notes. The output is a single track with no drum mapping, so expect to edit.

Can it find the chords in a recording?

The converter is polyphonic, so notes that sound together are kept as separate notes. Use a short clip in Chords mode and read the notes off the piano roll. It writes notes, not chord names, and results depend on the recording, so check by ear.

Will the MIDI match my project tempo?

The MP3 to MIDI converter writes an estimated tempo into the file, and it can be off. Turn the tempo option off and set your own in the DAW, or try the beta grid snap.

Can I convert WAV or other audio to MIDI too?

Yes. Besides MP3 to MIDI, the audio to MIDI converter accepts WAV, FLAC, OGG, AAC, M4A, and WebM files.

Can I use a song I did not make?

Only if you have permission. A MIDI file holds notes, not the recording, but a melody can still be protected. Convert only audio you own or have permission to use.

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