Piano to MIDI Converter

The Best Free Tool to Convert Piano Audio to MIDI

Transcribing a complex jazz piano solo or extracting pop chords from an old recording can take hours of tedious work by ear. Our free online piano audio to MIDI converter completely automates this process using state-of-the-art polyphonic pitch detection neural networks. Whether you are working with an MP3, WAV, FLAC, or OGG file, you can instantly turn your piano recordings into editable MIDI data.

Why Convert Piano MP3 to MIDI?

• Extract Chords from Audio: Analyze an audio file to determine the exact chord progressions played. This is perfect for music theory students, producers trying to sample an old record, and musicians learning to play a difficult song by ear.
• Piano Transcription Software Alternative: Instead of paying hundreds of dollars for expensive desktop transcription software (like AnthemScore or Melodyne), you can use our free browser-based tool to get a highly accurate MIDI representation of any solo acoustic piano track.
• Sheet Music from Piano Audio: Once you generate the .mid file, import it directly into notation software like MuseScore or Finale. It will automatically generate sheet music (grand staff) based on the MIDI notes and rhythms detected by our AI.
• Remix and Resound (VST replacement): Recorded a piano track but hate the sound of the room or the microphone? Convert that poor-quality piano recording into MIDI, then route that MIDI through a high-end virtual instrument (like Keyscape or Kontakt) in your DAW (Ableton, FL Studio, Logic) to completely replace the original sound with a multi-gigabyte concert grand piano.

Mastering Polyphonic Audio to MIDI Conversion

Unlike simple monophonic pitch trackers that can only follow one note at a time (like a human voice, bass, or flute), a piano frequently plays 3, 4, or even 10 notes simultaneously (polyphony). Our polyphonic audio to MIDI algorithm is specifically trained on thousands of hours of acoustic piano recordings to recognize overlapping frequencies, harmonic overtones, and complex chord clusters, making it the ideal tool for acoustic and electric piano conversions.

Tips for 100% Accurate Transcription

• Solo Piano is Mandatory: If you upload a full song with drums, bass, and vocals, the AI will attempt to transcribe *everything* into piano notes, resulting in a chaotic mess. If necessary, use an AI stem separator to isolate the piano before uploading here.
• Mind the Reverb: Large concert hall reverb blurs the transients (the exact start of the note). Dry, close-mic'd studio recordings yield much sharper MIDI timing.

100% Secure, Private, and Browser-Based

Worried about uploading your proprietary musical compositions, unreleased tracks, or copyrighted covers to a random server? Don't be. Our entire AI conversion engine runs locally inside your web browser via WebAssembly (WASM). Your MP3 and WAV files are processed using your own computer's CPU and memory, meaning zero upload times, no server queues, no file size limits, and absolute privacy for your music.