Is my audio uploaded to a server?

No. Everything runs locally in your browser. Your audio is decoded, analyzed, and discarded in your browser's memory — it never leaves your machine.

Why do I need to select an instrument?

Selecting the instrument helps the AI focus on the right frequency range and improves transcription accuracy.

MP3 to MIDI — MP3 to MIDI Converter — Free, No Signup

Screenshots

This tool uses a machine learning model — based on Spotify's open-source Basic Pitch — to transcribe audio into MIDI notes entirely inside your web browser.

Just upload an MP3, WAV, FLAC, or M4A file, wait a few seconds while the AI listens, and download a MIDI file you can open in any notation or production software like Logic Pro, Ableton Live, or FL Studio.

No sign-ups, no payments, no file uploads to external servers. Your audio stays on your machine. The AI model downloads once (about 900KB) and works offline after the first load.

Key Features

Built-in MIDI editor

Online piano roll editor lets you fix wrong notes, quantize, and adjust velocity before exporting

MP3 to MIDI

Screenshots

Key Features

Built-in MIDI editor

Works offline

Side-by-side playback

Use Cases

FAQ

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