Notes with timing
Each detected note keeps its pitch, onset and duration, so the rhythm of the performance survives the conversion.
Free MP3 to MIDI converter
Online AI Audio to MIDI Converter
Turn an MP3, WAV, FLAC, OGG or M4A file, or a microphone take, into a MIDI file right in your browser.
Drop an audio file here or click to choose one
Accepted: .wav, .mp3, .m4a, .flac, .ogg, .webm
from sound to notes
Why convert audio to MIDI
Turn a recording into notes you can move, fix and re-orchestrate. Audio stops being a fixed waveform and becomes a part you can rewrite.
MIDI separates the musical idea from the sound that carried it. Once a riff is MIDI you can play it on a different instrument, change the key, quantise the timing, or double it with a harmony line.
Clean, single-instrument sources give the most accurate transcriptions. For full mixes, separate the part you want first with the vocal remover or stem splitter, then convert that stem.
Audio to MIDI is where the bench crosses from listening to writing. A sung hook, a guitar phrase or a generated melody becomes a sequence of notes with pitch, start time and length.
Conversion runs in your browser, so the file does not need to be uploaded first. Transcriptions open directly in the SeedAudio MIDI editor, where wrong notes can be corrected before you export standard MIDI for any instrument or DAW.
What the converter delivers
Browser correction
Open the result in the built-in piano roll to delete ghost notes, fix pitches and tighten timing before exporting.
Standard MIDI export
Download a regular MIDI file that works with software instruments, notation apps and DAWs.
Converting a part
The better you isolate the source, the less you will have to clean up afterwards.
- 1
Isolate the melody
If the part is buried in a mix, separate it first so the converter hears one instrument.
- 2
Convert to notes
Run the transcription and wait for the note data to appear.
- 3
Correct and export
Review the notes in the editor, fix anything the model misheard, and download the MIDI file.
Typical conversions
Capturing a hummed idea
Record a melody on your phone, convert it, and keep working on it as notes instead of a voice memo.
Re-voicing a riff
Transcribe a guitar or synth line and play it back on a different instrument in your DAW.
Writing down a part
Get a starting transcription for a lesson, chart or arrangement, then refine it by ear.
Getting accurate transcriptions
One instrument at a time
Chords from several instruments at once produce crowded results. Convert a single stem whenever you can.
Mind slides and vibrato
Expressive pitch bends may appear as extra short notes. Merge or delete them in the editor.
Check the first bar
Make sure the transcription starts where the music does. A misplaced first note shifts everything that follows.
Audio to MIDI questions
Can I convert a full song?
You can, but results are clearer when you first separate the part you need. A single melody line transcribes more reliably than a dense mix.
Does it detect chords?
Several notes sounding at once are detected as notes, but chords are not named. Accuracy is highest for clear, isolated parts such as solo piano or guitar.
Can I edit the result before downloading?
Yes. The transcription opens in the SeedAudio MIDI editor, where you can move, delete, lengthen and re-pitch notes.
Which programs can open the exported file?
The export is a standard MIDI file, readable by common DAWs, notation software and hardware or software instruments.
Turn a recording into notes
Convert one melody today, clean it up in the editor, and play it on any instrument you like.
Convert to MIDI