🔒 100% in your browser · nothing uploaded

MP3 to MIDI Converter

MP3 is the format most people have — a song, a voice memo, a quick idea bounced from a phone. Converting that MP3 to MIDI lets you pull the actual notes out of the audio so you can edit them, change the instrument, fix timing, or print sheet music.

🎵 → 🎹

Drop an audio file to convert to MIDI

MP3 · WAV · FLAC · M4A · OGG — processed locally, never uploaded

⚙️ Advanced settings

Onset confidence 0.5 Higher = only clear note starts Note confidence 0.3 Higher = fewer, stronger notes Min note length 130ms Drops short blips Tempo 120 BPM Written to the MIDI header Include pitch bends (expressive, less clean)

⭐ 4.8 · free & unlimited · powered by Spotify's open-source Basic Pitch

This MP3 to MIDI converter does it entirely in your browser. Your MP3 is decoded locally and an AI model (Spotify’s open-source Basic Pitch) detects the notes on your device — the file is never uploaded, so even unreleased tracks stay private.

Works with any MP3

Bitrate and length don’t matter — if your browser can play the MP3, it can convert it. Clean, melodic recordings give the best note detection.

Editable .mid output

You get a standard MIDI file that opens in Ableton, FL Studio, Logic, GarageBand or MuseScore, ready to quantize, re-voice and arrange.

No watermark or cap

Convert as many MP3s as you like. There is no account, no daily limit and nothing stamped on your MIDI.

How to convert MP3 to MIDI

Add your file

Drag your MP3 file into the converter, or click to browse. It loads locally — never uploaded.

AI transcribes

Basic Pitch detects the notes on your device and draws a live piano roll of the result.

Download MIDI

Save the .mid (and a piano-roll image) and open it in any DAW or notation app.

MP3 to MIDI — FAQ

How do I convert an MP3 to MIDI for free?

Drop your MP3 into the converter above. It decodes the file locally, the AI detects the notes, and you download a MIDI file — all free, with no sign-up.

Will the MP3 to MIDI conversion be perfect?

AI transcription is very good on clear, isolated parts (piano, lead, vocal, guitar) and rougher on dense full mixes — true of every audio-to-MIDI tool. Use the Advanced settings to tune onset and note thresholds for your track.

Is my MP3 uploaded to a server?

No. The whole conversion runs in your browser, so your MP3 never leaves your device.