Upload your audio file
Choose an MP3, WAV, M4A, OGG, AAC, FLAC, or WebM audio file from your device. No app to install — the converter runs entirely in your browser on Mac, Windows, or Linux.
PRIVATE · WEB APP · NO SIGNUP
Audio to MIDI Converter — Free Online, No Signup
Turn any audio file into an editable MIDI file — no signup, no uploads, no software to install. Choose from AI-powered presets optimized for piano, voice, guitar, bass, solo instruments, or full songs. Preview the transcription, fine-tune notes in the piano roll editor, and download your MIDI — all in your browser on Mac, Windows, or Linux.
Drop your Audio here
or choose a file from your device
Supported: mp3, wav, m4a, ogg, webm, aac, flac
Your audio stays on your deviceNo signupAudio · Free: up to 5 min · Upgrade: up to 15 min
VERSATILE TRANSCRIPTION
Convert Audio to MIDI in Your Browser
Upload any audio file — MP3, WAV, M4A, OGG, AAC, FLAC, or WebM — and our AI, powered by Spotify Basic Pitch, will detect the notes and transcribe them into a standard MIDI file. All processing happens in your browser: your audio never leaves your device. Choose from six presets (Piano, Voice, Guitar, Bass, Solo, Full Song) to get the best results for your specific audio type.
Whether you have a piano recording, a vocal melody, a guitar riff, or a full song mix, the converter runs entirely in your browser. Your audio stays on your device, and you get a downloadable MIDI file ready for editing in any DAW or notation software.
THREE SIMPLE STEPS
How to Convert Audio to MIDI Online
Select the right preset
Choose from Piano, Voice, Guitar, Bass, Solo, or Full Song presets. Each preset tunes the AI for optimal note detection, sensitivity, and pitch bend handling for that audio type.
Preview and download your MIDI
Compare the original audio with the MIDI preview, fine-tune notes in the piano roll editor, and download the MIDI file when you are satisfied with the result.
VERSATILE & POWERFUL
Why Use Our Audio to MIDI Converter?
Multiple audio formats supported
Convert any audio file to MIDI — MP3, WAV, M4A, OGG, WebM, AAC, and FLAC. No need to convert your audio to a specific format first — just upload and go.
Browser-based privacy
Your audio stays on your device. Unlike other online tools that upload to servers, your recordings remain completely private. Works on Mac, Windows, and Linux.
Preview before downloading
Compare the original audio with synthesized MIDI playback and inspect every detected note in the piano roll before you download.
Built-in MIDI editor
Move, resize, join, or delete notes in the piano roll editor. Adjust sensitivity and minimum note length to refine the transcription — all without leaving your browser.
WHAT THE MODEL HEARS
How Audio to MIDI Conversion Works
Audio files store recorded sound as waveforms. MIDI stores musical instructions — which note, when to play it, how long, and how hard. Our AI model analyzes the audio spectrum, detects note onsets and sustained pitches, and maps them to MIDI note events. The entire process runs in your browser using WebAssembly.
Different presets adjust the detection parameters: the Piano preset uses a lower sensitivity (58%) with pitch bends disabled, while the Guitar preset enables pitch bends for string bends and slides. The Voice preset focuses on the fundamental frequency range of the human voice, and the Full Song preset balances sensitivity across the frequency spectrum.
GET THE BEST RESULTS
Tips for Better Audio to MIDI Conversion
- Use a clean recording with minimal background noise for the best accuracy.
- Start with a short section (30-60 seconds) to test the quality before converting longer files.
- Select the preset that matches your audio type — Piano for piano, Voice for vocals, etc.
- Raise sensitivity for quiet or delicate passages to capture faint notes.
- Lower sensitivity if the conversion picks up too many extra or unwanted notes.
- Increase minimum note length to filter out short artifacts and noise.
- Use Chrome, Firefox, Safari, or Edge on Mac, Windows, or Linux — no software install needed.
COMMON QUESTIONS
Frequently Asked Questions About Audio to MIDI Conversion
Can I convert audio to MIDI for free?
Yes, converting is free in your browser. New visitors get 1 free download, and verified users get an extra free download. To keep downloading afterward, you can buy a permanent credit pack (no subscription).
What audio formats are supported for MIDI conversion?
The converter supports MP3, WAV, M4A, OGG, WebM, AAC, and FLAC files up to 5 minutes. For best results, use a clear recording with minimal background noise.
How accurate is the audio to MIDI conversion?
Accuracy depends on the audio type and the preset you choose. The Piano preset works best for solo piano, the Guitar preset for guitar tracks, and the Voice preset for vocal melodies. Clear, isolated sources produce the most accurate transcriptions.
Is my audio uploaded to a server during conversion?
No. All processing happens locally in your browser using a lightweight AI model. Your audio never leaves your device, making it completely private and secure.
Can I edit the MIDI notes after conversion?
Yes. The built-in piano roll editor lets you move, resize, join, or delete notes with undo/redo support. You can also adjust sensitivity, minimum note length, and pitch bends to fine-tune the transcription.
What is the difference between audio and MIDI?
Audio (MP3, WAV, etc.) is a recording of sound waves. MIDI is a set of musical instructions — which notes to play, when, how long, and how hard. Converting audio to MIDI transcribes the notes so you can edit, transpose, or play through any virtual instrument.
Does the converter work on polyphonic music?
Yes. The AI model can detect multiple notes at the same time, making it suitable for chords and polyphonic pieces. However, it does not separate a mixed song into individual instrument tracks — it transcribes the dominant notes it hears.
Which preset should I use for my audio?
Choose Piano for piano recordings, Voice for vocal melodies, Guitar for guitar tracks, Bass for basslines, Solo for monophonic instruments, or Full Song for mixed audio. Each preset optimizes the detection sensitivity, minimum note length, and pitch bend settings for that type of audio.
Is this the best free online audio to MIDI converter?
100% free — no signup, no hidden limits. The AI model detects notes accurately across multiple presets, and the built-in piano roll editor lets you refine the transcription before downloading. Convert any song or music recording to MIDI right in your browser.
RELATED TOOLS
More Audio to MIDI Converters
MP3 to Piano MIDI Converter
Convert MP3 files to piano-optimized MIDI with the Piano preset. Best for solo piano and keyboard recordings.
Voice to MIDI Converter
Turn a vocal take, humming, or singing into MIDI. Record your voice or upload an audio file — no signup needed.
WAV to MIDI Converter
Convert WAV files to MIDI with AI-powered transcription. Supports all WAV formats, no signup required.
YouTube to MIDI Converter
Extract audio from any YouTube video and convert it to MIDI. Paste a link or upload a video file.
MP4 to MIDI Converter
Convert MP4 video to MIDI in your browser. Extract the audio track from any video and turn it into editable MIDI notes.
Music to MIDI Converter
Convert any song or music track to MIDI with AI transcription. Supports MP3, WAV, FLAC, and more formats.
Song to MIDI Converter
Convert any song — single-instrument track, instrumental, or full mix — into editable MIDI, no signup needed.
Sound to MIDI Converter
Turn any sound or audio recording into editable MIDI notes, no signup needed.
Guitar to MIDI Converter
Convert guitar riffs, solos, and chords into editable MIDI notes.
Text to MIDI Converter
Turn text or note names into a playable MIDI melody.
READY WHEN YOU ARE
Convert your audio to MIDI today
Start with a short, clear recording for the best result.