Audio to MIDI
Convert audio to playable MIDI
Upload an audio file up to 5 minutes, convert it to MIDI in your browser, then inspect the notes in a piano-roll preview before downloading the .mid file.
Loading tool
Preparing the browser audio workspace...
Private
Runs in your browser
Your audio is processed on this device. This page does not send your file to an upload API.
Playable
Preview notes before download
The generated MIDI appears as note blocks with a synced playhead, transport controls, and velocity bars.
Realistic
Best for clear notes
Clean single-instrument recordings work better than full songs with drums, effects, or background noise.
How it works
From audio file to editable MIDI notes
This page is built for musicians who want a practical way to turn a recorded idea into MIDI without installing desktop software first. It is useful for quick songwriting sketches, practice loops, melody capture, and checking the shape of a part before rebuilding it in a DAW. The result is not meant to replace careful editing, but it can save time compared with drawing every note by hand.
Step 1
Choose a focused audio file
Start with an MP3, WAV, M4A, AAC, OGG, FLAC, or WEBM file that keeps the part you care about easy to hear. A single melody, riff, bass line, piano sketch, or vocal idea gives the converter a clearer target than a finished full-band mix.
Step 2
Convert it in your browser
After you choose the file, the page reads the audio locally and estimates the notes, timing, and note lengths. Files can be up to 5 minutes and 50 MB, but shorter clips usually finish faster and are easier to check.
Step 3
Check the piano-roll preview
Before downloading, inspect the generated MIDI as note blocks on a piano roll. The preview helps you catch obvious wrong notes, extra notes from noise, or timing that may need editing in your music software.
Step 4
Download and edit the MIDI
Save the .mid file, then open it in a DAW, notation app, piano-roll editor, or learning tool. MIDI is designed for editing, so you can change the instrument sound, quantize timing, adjust velocities, or clean up the notes manually.
Use cases
When audio to MIDI conversion helps most
Audio to MIDI is most helpful when you already have a musical phrase but want it in a format you can edit, rearrange, or study. The converter gives you a note-based version of the recording, so you can move the idea into other instruments, build harmonies, or clean up timing without starting from a blank grid.
Turn guitar riffs into MIDI
Record a clear guitar idea, convert the audio to MIDI, and use the result to double the part with piano, synth, bass, or notation. It works best when the riff is played cleanly without heavy distortion or overlapping rhythm parts.
Capture vocal melodies
If you hum or sing a melody into your phone, this page can turn that rough audio into editable MIDI notes. The converted file gives you a starting point for arranging, harmonizing, or testing the idea with different sounds.
Sketch piano and keyboard ideas
Simple piano recordings are a good fit because the pitch is stable and the note attacks are clear. Use the MIDI preview to see which notes were detected, then download the file and refine the performance in your editor.
Prepare practice and learning material
MIDI makes it easier to slow a phrase down, view the notes, change the key, or isolate a part. For musicians learning by ear, converting a clean excerpt can turn a recording into something easier to study and repeat.
Better results
How to get cleaner MIDI from the same recording
The quality of an audio to MIDI result depends heavily on the source. A close microphone, steady timing, clear note attacks, and less background noise all make the piano-roll preview easier to trust. If your first conversion looks messy, try exporting a shorter section, lowering reverb, or recording the part again with fewer overlapping sounds.
Keep the source simple
A clean single-instrument recording usually beats a polished song mix. Drums, reverb tails, crowd noise, delay, and stacked harmony can all create extra MIDI notes because the converter is trying to interpret everything it hears.
Trim silence and unrelated parts
If the useful phrase is only 20 seconds long, upload that section instead of a full 5-minute recording. Smaller clips convert faster, produce a more readable piano roll, and are easier to correct after download.
Use MIDI as a draft, not a final score
Audio to MIDI conversion is a practical starting point, not a perfect note-for-note result. Expect to edit note lengths, remove stray notes, and adjust timing once the .mid file is inside your DAW or notation software.
Related tools
Get cleaner MIDI from cleaner audio
These tools help with pitch, timing, and note context before you turn a recording into MIDI.
FAQ
Audio to MIDI questions
Does Audio to MIDI upload my file?
No. The conversion runs in your browser. The file you choose stays on your device.
Can I convert MP3 to MIDI online?
Yes. Choose an MP3 file and the page will convert it locally in your browser, then give you a piano-roll preview and a downloadable .mid file. Clear melody or single-instrument MP3 clips usually produce better results than dense full songs.
Can I convert WAV, M4A, or other audio formats?
Yes. The converter accepts MP3, WAV, FLAC, OGG, M4A, AAC, and WEBM files up to 50 MB and 5 minutes. If a browser cannot decode a specific file, export it again as MP3 or WAV and try that version.
Why does the MIDI sound different from my recording?
MIDI stores notes and timing, not the original instrument tone. This page estimates the notes in your recording, then plays them back with a simple preview sound.
What kind of audio works best?
Clean single-instrument audio works best. Melody, guitar, piano, vocal lines, and clear riffs convert better than full mixes, drums, heavy reverb, or noisy recordings.
Will it convert chords and full songs perfectly?
Not usually. Chords, layered instruments, distortion, drums, and background noise make note detection harder. You may still get useful MIDI, but it should be treated as an editable draft rather than a finished note chart.
What should I do after downloading the MIDI file?
Open the .mid file in a DAW, notation editor, piano-roll editor, or music-learning app. From there you can change the instrument, fix wrong notes, quantize timing, adjust note lengths, or combine the part with other tracks.