Audio to MIDI converts MP3, WAV, M4A, FLAC and OGG files to MIDI for free, right in your browser. Your audio is never uploaded and no account is needed. AI transcription powered by Spotify's Basic Pitch detects chords as well as melodies, and the detected beat is written into the MIDI file as a tempo map, so bar lines in your DAW follow the performance instead of a fixed 120 BPM grid. Adjust quantize strength and minimum note length, preview the piano roll, and download a standard MIDI file.