Turn usable audio into editable MIDI without uploading the file anywhere
Use this page when an audio clip already contains note information worth keeping. Drop a file or paste a URL, let the browser detect pitches locally, and leave with a MIDI file you can actually inspect and refine.
Free browser conversion
Use MP3 to MIDI when the audio already has note structure you want to rescue
This tool is strongest on vocals, melodies, bass lines, and other parts where the pitch contour is clear enough to become editable notes. It is not magic for every dense mix, but it is a fast way to rescue structure from audio you would otherwise leave locked inside a waveform.
Best on clear lead material
Solo instruments, vocals, bass lines, and simple phrases give the AI model the cleanest target and usually produce the most usable MIDI.
Dense mixes still need judgment
If many instruments overlap, expect cleanup. The point is not perfect transcription every time, but getting back enough note structure to decide whether the take is worth editing.
MIDI Editor is the natural second step
Once the conversion is close enough, open the result in MIDI Editor and clean timing, wrong notes, or arrangement details in the browser.
No credits are required here because the model runs locally in your browser.
Drop an audio file here, or click to browse
Supports MP3, WAV, OGG, FLAC, M4A, WebM
All processing happens in your browser. No audio is uploaded to any server.
Why use this MP3-to-MIDI converter
A lightweight, private, AI-powered converter that turns audio recordings into editable MIDI — no installation, no account, no upload.
Fully private — nothing leaves your browser
The AI model runs inside your browser tab. Your audio is never sent to a server, so there are zero privacy concerns.
Fast, real-time note detection
Spotify's Basic Pitch model detects pitches, onsets, and note durations in seconds — even on modest hardware.
Supports many audio formats
Upload MP3, WAV, OGG, FLAC, M4A, or WebM files — or paste a direct URL to an audio file on the web.
Standard MIDI output
The result is a standard .mid file you can open in any DAW, notation software, or the built-in MIDI Editor.
Free — no credits or account required
Because everything runs locally, this tool is completely free to use with no sign-in or credit cost.
Seamless handoff to MIDI Editor
After conversion, open the result directly in the browser-based MIDI Editor to inspect, edit, and refine notes.
How MP3-to-MIDI conversion works
Three steps, all running locally inside your browser.
Drop or paste your audio
Drag an audio file onto the upload zone, browse your filesystem, or paste a direct URL to any supported audio format.
AI detects pitches and note onsets
The Basic Pitch neural network analyzes the waveform, identifying individual notes with their pitch, timing, and velocity.
Download the MIDI or open it in the editor
Once detection is complete, download the .mid file or open it directly in the browser-based MIDI Editor to keep working.
FAQ — MP3-to-MIDI Converter
Common questions about converting audio files to MIDI in the browser.
For best results, use clean recordings with a single dominant instrument or vocal.
Convert the audio, keep the note structure, and then decide whether it deserves editing
This page is for the moment when an audio file has enough musical information that you do not want to lose it inside raw sound alone. Convert it to MIDI, then keep only the results that are worth further cleanup.
After conversion, open the result in MIDI Editor to fix timing, wrong notes, and arrangement details while the structure is still fresh.