AUDIO TRANSCRIPTION / MIDI OUT
How do I convert MP3 to MIDI? In your browser.
Choose one MP3, WAV, FLAC, M4A, or OGG file. This browser tool analyzes it locally, then lets you download a standard MIDI file for your DAW.
01 / SOURCE AUDIO
Choose a file to convert
MP3 · WAV · FLAC · M4A · OGG
How does this MP3 to MIDI converter work?
Choose one local audio file, let the local Web Audio pitch tracker analyze it, then download the resulting standard MIDI file. To change MP3 to MIDI, use the same one-file workflow; the file is decoded and analyzed in your browser, so the tool does not need an upload endpoint or an account.
When you want the MIDI notes shown as a score, continue with the Audio to Sheet Music workflow.
What are the underlying web audio and MIDI standards?
The Web Audio API reference on MDN explains browser audio processing, while the W3C Web Audio API specification defines the platform API. The MIDI Association overview provides background on MIDI as a music-data standard.
“This specification describes a high-level Web API for processing and synthesizing audio in web applications.”
These references describe the underlying standards; the conversion result remains an editable first pass and can vary with the source recording.