Producers and beatmakers
Pull the hook or bassline out of your own demo, drop the MIDI on a synth and audition ten sounds in the time it takes to replay one.
ToMIDI converts MP3 to MIDI for free, right in your browser: drop in a song, a stem or a voice memo and Spotify's open-source Basic Pitch model writes down every note it hears. No install, no sign-up, and the MP3 never leaves your device. Check the tempo and key, tidy the timing, then download a .mid for your DAW.
Drop audio here to convert it to MIDI
MP3 · WAV · M4A · FLAC · OGG · AAC · MP4 · WEBMup to 300 MB, first 10 minutes analysed
Drag a file anywhere on this card, or press U to pick one. Conversion starts right away.
Each result is this engine's actual output, not a mock-up.
Only convert audio you have the right to use. Your file stays on this device.
Knowing how to turn MP3 to MIDI starts with what each file holds. An MP3 is a recording: compressed sound, thousands of samples a second. A MIDI file holds no sound at all, only instructions: which note, when it starts, how long it lasts and how hard it is played. So you cannot rename or change MP3 to MIDI the way you change MP3 to WAV. MP3 to MIDI file conversion is transcription. The converter listens to the music and writes the notes down, much as a musician does by ear. That is what makes the result so flexible: any instrument can play it, your DAW can change its tempo without touching the pitch, and it can be transposed, edited or printed as a score. The 26 second piano MP3 in our example weighs 356 KB; the MIDI made from it is 1.3 KB.
Convert an MP3 NowMost stray notes trace back to what is in the recording, not to a setting. Before you blame the converter, check the file for these:
Unlike most online MP3 MIDI converter sites, nothing here waits in an upload queue. Everything happens on the page you are reading.
There is no Convert button. Decoding begins as soon as the file lands, and notes appear in the piano roll while the rest of the song is still being analysed.
The audio is decoded and transcribed inside your browser tab. Unreleased demos and private recordings are never sent to a server.
Convert MP3 to MIDI free: files up to 300 MB, the first 10 minutes analysed and the complete .mid to download. No 30 second cap and no watermark.
The open-source model behind Spotify's own free demo, polyphonic and instrument agnostic, running locally on your computer.
Quantize, snap stray notes into the key, correct a tempo read at half or double speed and edit single notes, with undo.
MIDI quantized or as played, MusicXML for notation apps, PNG and SVG images of the score, or a PDF through the print dialog.
Here is how to turn MP3 into MIDI, start to finish. A 20 second clip takes about 7 seconds the first time, model download included, and about a second after that.
Drag the file onto the converter at the top of this page, or click Upload audio. Any MP3 your browser can play will do, up to 300 MB.
The audio is mixed to mono at 22.05 kHz, then Basic Pitch scans it in short windows and finds each note's pitch, start, length and velocity. Tempo and key are worked out alongside.
Play the MIDI against the original, choose an instrument preset, quantize to 1/8, 1/16 or 1/32, and correct the tempo or key if either came out wrong.
Save it quantized or as played, with tempo, key and time signature written in, and drop it into FL Studio, Ableton Live, Logic Pro or any other DAW.
Tools that only transform MP3 to MIDI leave these jobs for later. Here they happen on the same page, before you download.
Auto, Piano, Voice, Guitar, Bass and Solo melody each tune note detection to that instrument's range and attack; Voice, Bass and Solo melody keep one note at a time. The model runs once per file and a preset only re-reads its output, so the piano roll changes the moment you click.
Pick a PresetSwitch between Original, Mix and MIDI while it plays, or press A to flip, and missed or invented notes stand out at once. Notes the model was unsure about are drawn dashed: keep them, or leave them all out of the result and the export with one switch.
Compare Them NowThe BPM and key are detected and written into the file. If a 70 BPM ballad reads as 140, one click halves it; you can also type a tempo or tap it in. Pick 4/4, 3/4, 2/4 or 6/8 and nudge bar 1 so the notes land on your grid. Need the numbers only? The key finder and BPM finder skip the transcription.
Line It UpFlip the result to the score view to read the notes as notation. Export MusicXML for MuseScore, Sibelius, Finale or Dorico, save PNG or SVG images, or print and choose Save as PDF. For more layout options, open the .mid in MIDI to sheet music.
See the ScoreMost people asking how to convert MP3 to MIDI format want one thing: a file their DAW opens. In FL Studio, drag the .mid onto an instrument in the Channel Rack or use File > Import > MIDI file. In Ableton Live, drop it on a MIDI track. Logic Pro builds a software instrument track and asks whether to import the tempo; say yes. GarageBand, Cubase and Reaper read the same file.
Get Your .midBach's Prelude in C, played by Kimiko Ishizaka: a public domain recording, trimmed to 26 seconds and saved as a mono MP3 of about 100 kbps. Below is exactly what the engine wrote.
What you are looking at
145 notes at 111.4 BPM in C major, 4/4, with 27 notes drawn dashed because the model was less sure of them. Open the same clip under Try a real sample in the converter above and every preset and control works on it. Starting from a lossless file instead? WAV to MIDI explains what changes.
What is in the MP3 matters far more than its bitrate. We give no percentages until our own tests are published; this is what each kind of file tends to produce.
A sung line, a flute or a lead synth with little reverb comes through cleanly. The Voice preset smooths slides and vibrato, and Solo melody keeps one note at a time. More in voice to MIDI.
Most notes land. Heavy pedal can smear chords and add short ghost notes, so use the Piano preset and review the dashed ones. More in piano audio to MIDI.
Vocals, guitars, bass and drums all land in one track with plenty of extra notes. Treat it as a sketch, or convert an isolated stem if you have one.
The model hears a 22.05 kHz mono version of your file, so 320 kbps and 192 kbps MP3s reach it in very similar shape. Very low bitrates are different: their artifacts can turn into faint ghost notes.
Plenty of sites offer MIDI for MP3 files, but most upload the file, cap the free length or ask you to sign in before the download. Free tiers and exports below were read on each tool's own page in November 2026.
| This siteToMIDI | Basic Pitch demo | AI-MIDI | Jukeblocks | AnthemScore | |
|---|---|---|---|---|---|
| Free use | Free and full length | Free and open source | Previews free; one full download a week after sign-in | Free | Trial converts the first 30 seconds; desktop from $29 |
| Where it runs | In your browser, nothing uploaded | In your browser, audio stays local | On their servers | In your browser, nothing uploaded | Desktop app or AnthemScore Web |
| Sign-in needed | No | No | Required to download | No | Activation key or account |
| Length and size | Up to 300 MB; first 10 minutes analysed | No limit listed | 5 minutes, 50 MB | 5 minutes, 100 MB | Whole songs in the paid versions |
| Exports | MIDI quantized or as played, MusicXML, PNG, SVG, PDF via print | MIDI | MIDI | MIDI | PDF in Lite; MIDI and MusicXML in Professional ($39) |
| Fix before export | Presets, quantize, key, tempo, meter, note edits with undo | Detection sliders | Pick a section to convert | None; edit in your DAW | Note and score editing in Professional |
| Sheet music | Yes | No | Separate Audio to Score tool | Separate tool | Yes |
Different people, different MP3s, one goal: notes you can work with. Think of it as a MIDI maker from MP3 files you already have.
Pull the hook or bassline out of your own demo, drop the MIDI on a synth and audition ten sounds in the time it takes to replay one.
Convert a recording of the piece you are learning, see every note in the piano roll and check tricky bars against the score view. Song to piano shows the notes on a keyboard.
Turn a phone memo or a rough bounce into MIDI before the idea fades, then arrange it properly in your DAW.
Get a first draft of a part from a reference MP3, correct it by ear and hand students MusicXML or a printed page.
Get the notes of a riff from your own recording with the Guitar or Bass preset. For playing tips and tabs, see guitar to MIDI.
Reuse a melody from your own track as MIDI so you can re-voice it, change its key or loop it under a scene. Is the music inside a clip? Use MP4 to MIDI.
The questions people ask before they convert, with straight answers.
Here is how to convert MP3 into MIDI: drop the file on the converter at the top of this page. ToMIDI decodes it in your browser, Basic Pitch finds the notes and the piano roll fills in within seconds. Listen against the original, fix the tempo, key or timing if needed, then click Download .mid. There is no account and nothing to install.
Yes, all of it. You can convert files up to 300 MB with the first 10 minutes analysed, and download the full-length .mid, MusicXML, PNG and SVG with no watermark and no sign-up.
It depends on the job. For a free online MP3 to MIDI converter that keeps the file private and lets you fix the result before export, ToMIDI is built for exactly that. Melodyne edits the audio itself inside a DAW, and AnthemScore is a paid desktop app focused on sheet music. The comparison table above lists the free limits of each.
It follows the recording. MP3 to MIDI AI such as Basic Pitch is reliable on a single voice or instrument, good but imperfect on solo piano and rough on a full band mix. We publish no accuracy percentage until our own tests are done, so compare the MIDI with the original before you download.
You can convert it, but ToMIDI does not separate instruments: a full mix gives one track with every part blended together and many extra notes. If you have the stems, convert each one on its own and you get one clean MIDI part per stem.
Less than people expect. The model listens to a 22.05 kHz mono version, so most files at 128 kbps and up sound much the same to it. Very low bitrates and copies re-encoded many times add artifacts that can become ghost notes. If you still have the original WAV, use WAV to MIDI instead.
No. A SoundFont is a bank of instrument samples used to play MIDI back; it plays no part in finding the notes. Once you have the .mid, load any SoundFont or virtual instrument in your DAW or player to choose its sound, or render it to audio with MIDI to MP3.
There is nothing to download or install: this MP3 into MIDI converter is a web page that runs in a modern browser on Windows, macOS or Linux; the only download is your .mid file. It also works in a phone browser, though longer files take a while there.
Convert the MP3 here and click Download .mid. In FL Studio, drag the file onto a Channel Rack instrument or use File > Import > MIDI file. In Ableton Live, drop it on a MIDI track and load an instrument. In Logic Pro, drag it into the Tracks area and accept the tempo import.
Yes. The detected BPM is written into the file, and MIDI as played keeps the original timing so it lines up with the MP3 from 0:00. If the tempo was read at half or double speed, fix it with one click before you download, or type your project tempo so the notes land on your grid.
Good on a clean solo piano recording, with chords worth a second look. Pick the Piano preset, check the dashed notes and switch to the score view, which uses a grand staff. For practice tools and tips, see piano audio to MIDI.
No. The file is decoded and converted inside your browser and never leaves your device. The page downloads the note model, about 1 MB, the first time you convert; after that the work happens locally.
Yes. .mid is the file extension of a Standard MIDI File, so an MP3 to .mid converter does exactly the same job. The file ToMIDI gives you opens in every DAW, notation app and MIDI player.
Extra notes usually come from overtones, reverb tails or drums; missing ones from soft notes buried under loud ones. Try the preset that matches your instrument, drop the dashed uncertain notes, snap stray notes to the key, or fix single notes by hand.
Yes, right in the result: click a note to hear it, drag to move it, drag its end to resize it, double-click to add one and undo any change. For bigger edits across a whole file, open the .mid in the MIDI editor.
Yes. The same page also takes WAV, M4A, FLAC, OGG and AAC, plus the soundtrack of MP4 and WEBM video. For an overview of every source, start at the audio to MIDI converter on our homepage.
Edit it, print it, hear it with real instruments or analyse the song.

Drop an MP3 on this box to convert MP3 to .mid within seconds for a short clip: one MP3 to MIDI converter, free, online and private, with nothing to install.
or drop it anywhere on this box