Audio to MIDI Converter
Turn any MP3, WAV, or recording into editable MIDI in seconds. Note detection runs entirely in your browser, so your audio never leaves your device — free and unlimited.
What Is an Audio to MIDI Converter?
An audio to MIDI converter turns a recorded sound — an MP3, WAV, or any audio file — into MIDI data: a list of musical notes with their pitch, timing, and velocity. Instead of a fixed waveform, you get editable notes you can re-instrument, transpose, quantize, or print as sheet music.
Our free MP3 to MIDI converter uses Spotify's open-source Basic Pitch model to detect notes directly in your browser. It is polyphonic, so it can pick up chords and overlapping notes — not just a single melody line — making it great for piano, guitar, vocals, and full songs.
Whether you want to convert WAV to MIDI, transcribe a melody you hummed, or turn a song into MIDI for your DAW, the process is the same: drop in the audio, let the AI transcribe it, and download a standard .mid file you can open anywhere.
Audio to MIDI Converter Features
Any Audio Format
Convert MP3, WAV, FLAC, M4A, and OGG to MIDI. Drag in a song, a voice memo, or an instrument recording — if your browser can play it, we can transcribe it.
Polyphonic Note Detection
Detects chords and multiple overlapping notes at once, not just a single melody — ideal for piano, guitar, and full mixes.
100% Private — No Upload
Everything runs locally in your browser. Your audio is never sent to a server, so your tracks and demos stay completely private.
Instant, Free & Unlimited
No sign-up, no credits, no watermarks. Convert as many files to MIDI as you want, as often as you like, at no cost.
Editable MIDI Output
Download a standard .mid file that opens in any DAW, or jump straight into our free online MIDI Editor to fine-tune the notes.
Powered by Spotify Basic Pitch
Built on Spotify's acclaimed open-source pitch-detection AI for accurate, instrument-agnostic transcription.
How to Convert Audio to MIDI
Turn any MP3 or WAV into a MIDI file in three simple steps:
1. Upload Your Audio
Drag and drop an MP3, WAV, FLAC, M4A, or OGG file, or click to browse. The file is loaded straight into your browser — nothing is uploaded.
2. AI Transcribes the Notes
Spotify's Basic Pitch model analyzes the audio and detects every note's pitch, start time, and length — including chords.
3. Download Your MIDI
Get a standard .mid file instantly, or open it in our MIDI Editor to tweak notes before exporting to your DAW.
Who Uses an Audio to MIDI Converter?
Pianists & Keyboardists
Transcribe a piano performance into MIDI to edit, re-voice, or turn into sheet music.
Guitarists
Convert a riff or solo recording to MIDI and re-trigger it with any virtual instrument.
Producers & Songwriters
Hum or record an idea, convert it to MIDI, and drop the notes straight into your DAW.
Music Students
Slow down and study exactly which notes are played in a song by turning the audio into MIDI.
Beatmakers
Extract melodies and basslines from samples to rebuild and flip them legally with your own sounds.
Remixers & DJs
Pull MIDI from a track to rework its harmony, change the key, or build a mashup.
Audio to MIDI FAQ
How do I convert MP3 to MIDI?
Drop your MP3 onto the converter above. The AI transcribes the notes in your browser and gives you a downloadable .mid file in seconds — no software or sign-up needed.
Can I convert WAV to MIDI too?
Yes. The tool accepts WAV, MP3, FLAC, M4A, and OGG. WAV to MIDI works exactly the same way — just upload the file and download the MIDI.
Is this audio to MIDI converter free?
Completely free, with no limits, watermarks, or account required. You can convert as many files as you like.
Is my audio uploaded to a server?
No. Conversion runs entirely in your browser using Spotify's Basic Pitch model, so your audio never leaves your device.
How accurate is the transcription?
Accuracy is highest for clean, single-instrument recordings like solo piano or guitar. Dense, fully-mixed songs are harder, so you may want to clean up the result in a MIDI editor.
Can it detect chords and multiple notes?
Yes — the model is polyphonic, so it detects chords and overlapping notes, not just a single melody line.
What is a MIDI file used for?
MIDI stores notes rather than sound, so you can change the instrument, transpose, fix timing, or export to sheet music. It's the standard format for editing music in any DAW.
Can I edit the MIDI after converting?
Yes. Download the .mid file for your DAW, or click "Edit in MIDI Editor" to refine the notes in our free online editor right away.
Convert Your Audio to MIDI
Drop in an MP3, WAV, or any recording and get an editable MIDI file in seconds — free, unlimited, and 100% private.
Convert Audio to MIDI