Upload an MP3
Choose a file from your device or drag it into the upload area. The first version accepts MP3 files up to 20 MB and 3 minutes.
PRIVATE · BROWSER-BASED · NO SIGNUP
Free Online MP3 to MIDI Converter
Turn an MP3 into an editable MIDI file with AI-powered note detection. Preview the result, adjust the transcription, and download your MIDI — right in your browser.
Drop your MP3 here
or choose a file from your device
Your audio stays on your deviceNo signupMP3 only · 20 MB / 3 min
AUDIO IN, NOTES OUT
Convert MP3 to MIDI in Your Browser
Upload an MP3 and convert the notes it contains into a standard MIDI file you can edit in a DAW, MIDI editor, or other compatible music software. The converter runs on your device with a lightweight machine-learning model, so you can start without creating an account or installing a desktop program.
MP3 to MIDI conversion is automatic transcription, not ordinary file compression or format switching. The result contains detected note events rather than the original voice or instrument sound. Use it as an editable starting point: move, resize, join, or delete notes here, then continue refining the MIDI in your music software.
THREE SIMPLE STEPS
How to Convert MP3 to MIDI Online
Choose the closest audio type
Select voice, piano, guitar, bass, another solo instrument, a full song, or Not Sure. The preset adjusts detection; it does not create separate instrument tracks.
Preview and download MIDI
Compare the original audio with the MIDI preview, edit notes in the piano roll, adjust the available controls, and download the MIDI when the result is useful.
WHAT THE MODEL HEARS
How Our MP3 to MIDI Converter Works
An MP3 stores recorded sound as an audio waveform. A MIDI file stores musical instructions such as note pitch, start time, duration, velocity, and optional pitch bends. To convert MP3 to MIDI, the model listens for note onsets and sustained pitches, turns those detections into MIDI note events, and prepares a file you can edit.
The model can detect more than one pitch at the same time and can work across different instruments, including voice, piano, and guitar. It works best on one instrument at a time.
START WITH CLEAN AUDIO
Get Better MP3 to MIDI Results
Voice and humming, piano, guitar, bass, and other pitched instruments work best when the notes are easy to hear.
- Use a clean recording with little noise, distortion, or reverb.
- Try a short section before processing a longer MP3.
- Choose the preset that most closely matches the recording.
- Raise sensitivity for quiet notes; lower it to remove extras.
- Increase minimum note length to remove short detections.
- Keep pitch bends for expressive voice or guitar parts.
Full songs are experimental. A mixed song may produce a useful sketch, but it usually needs more cleanup than a solo recording.
FOCUSED ON THE ESSENTIALS
Why Use This Free MP3 to MIDI Converter?
Browser-based processing
Your MP3 stays on your device. Only the model and normal site assets are downloaded.
Preview before downloading
Compare the source with synthesized MIDI and inspect every detected note in the piano roll.
Built-in MIDI note editing
Move, resize, join, or delete notes with undo, redo, and optional grid snapping—without opening a full workstation.
Standard MIDI output
Download a standard MIDI file and continue editing it in compatible music software.
Use MP3 to MIDI on Desktop or Mobile
Use the converter in a supported modern browser on desktop or mobile. Because transcription runs on your device, processing time depends on the MP3 length and your hardware. A recent desktop or laptop is recommended for longer files, while short clips are the best place to start on a phone or tablet.
COMMON QUESTIONS
Frequently Asked Questions About MP3 to MIDI
Can I convert MP3 to MIDI for free?
Yes. The first version is a free online MP3 to MIDI converter with no account or desktop software required. Choose an MP3, review the automatic transcription, and download the MIDI result.
Does MP3 to MIDI conversion actually work?
Yes, but the result depends on the recording. Clear solo melodies and isolated instruments usually convert more cleanly than dense songs with several instruments, drums, effects, or background noise. Treat automatic MIDI as a starting point for editing.
Can any MP3 be converted to MIDI?
The first version accepts standard MP3 files up to 20 MB and 3 minutes, but not every recording will produce an equally useful transcription. If a file cannot be decoded, export it again as a standard MP3.
Can it convert chords or polyphonic MP3 audio?
It can detect multiple pitches at the same time, so chords and polyphonic instruments are supported. It still works best on one instrument at a time and does not separate a mixed song into individual instrument tracks.
Is my MP3 uploaded to a server?
No. In the first version, the MP3 is decoded and analyzed in your browser. The audio stays on your device during conversion. The page still downloads the model and ordinary website assets needed to run the tool.
How long does it take to convert MP3 to MIDI?
Conversion time depends on the audio length, your device, and whether the model has already loaded. Short clips on a recent computer will usually finish sooner than long files on a phone. The page shows progress instead of promising a fixed time.
Can I convert MP3 to MIDI on my phone?
You can use a supported modern mobile browser, but local AI processing may be slower on older devices. Start with a short MP3. A recent desktop or laptop is recommended for longer recordings.
What is the difference between MP3 and MIDI?
MP3 contains recorded sound. MIDI contains editable note instructions such as pitch, timing, duration, and velocity. Converting MP3 to MIDI transcribes notes; it does not preserve the original singer's voice or instrument tone.
Does the converter create sheet music or separate instrument tracks?
Not in the first version. It downloads a MIDI file and shows a piano-roll preview. It does not export PDF sheet music, MusicXML, tabs, stems, or separate drum, bass, guitar, and vocal tracks.
Can this tool convert MIDI to MP3?
No. MIDI to MP3 is the opposite task: it renders MIDI instructions as audio. This page focuses only on converting MP3 audio into MIDI note data.
READY WHEN YOU ARE
Turn your next MP3 into editable notes
Start with a short, clear recording for the cleanest result.