Local conversion · Optional cloud backup

Audio to MIDI Converter

SoundToMIDI turns a recording into MIDI notes, right in your browser. Choose a short phrase, listen to the detected notes and download Raw MIDI for free. No upload or sign-up needed for conversion.

MP3 to MIDI converter · Browse all tools

Free Raw MIDI. Optional paid export for edits & scores.

Choose a recording profile

Not sure? Start with General.

Drop your audio or video here

MP3 · WAV · FLAC · M4A · OGG · AAC · MP4 · WebM · up to 100 MB — stays on your device

Best with one voice or instrument. Try a 15–30-second phrase.

File support & processing time

A short clip may take 30 seconds–2 minutes; longer audio can take several minutes or more. Device speed and the first model download affect timing.

MP4/WebM need a browser-readable audio track. If a video will not open, export MP3 or WAV. For files over 100 MB, shorten the recording or extract its audio.

Profiles adjust detection, pitch bends and cleanup. You can fine-tune them in Advanced settings.

Or record a solo voice or instrument · up to 60 seconds.

Advanced settings

Onset confidence 0.5 Higher = only clear note starts Note confidence 0.3 Higher = fewer notes, with more certain detection Min note length 130ms Drops short blips Tempo 120 BPM Used for the MIDI header and cleanup grid Include pitch bends in the free Raw MIDI

Your MIDI is ready

Listen to your MIDI

MIDI playback Loop MIDI

Speed & loop affect MIDI preview only, not exports.

Download Raw MIDI

Edits and scores are in the optional export pack below.

Export your edits & score

Edited MIDI · PDF · MusicXML · 2 practice WAVs

One-time purchase · 8 files · Same-result edits included

Download demo pack (.zip)

Pack contents, sample & terms

Project saves include edits, settings and MIDI. Audio is uploaded only when you choose audio backup. Saving uses no exports.

Edited MIDI — Open in your DAW
Score PDF + MusicXML — Print or edit a draft with note names
2 practice WAVs — Listen at original & half speed
Note-map PNG — See piano keys, pitches & timing
Note list CSV — Exact pitches, start times & lengths
Quick-start guide — File tips & your export settings

One export unlocks one project, including later edits. Purchased exports do not expire. Cloud saving is optional. Score drafts need review; practice WAVs support up to 10 minutes. Terms · Payment help

Edit notes & timing

Open MIDI editor

Adjust Edited MIDI

Refines detected notes; does not improve the transcription model.

Part to extract

Cleanup strength

Automatic timing

Your sheet music draft

Automatic draft. Review notes and rhythm before export.

Score settings & limitations

Time signature Bar offset (quarter beats) Treble staff starts at

Bar offset adds leading rests to align a pickup; it must be smaller than one bar. Notes below the split go to the bass staff. Empty staves are omitted. Tempo comes from your MIDI timing controls.

PDF and MusicXML use this score; MIDI keeps your edited timing.

Automatic draft · Fixed tempo · Sixteenth-note grid · Suggested hand split. Review notes and rhythm; tuplets, pedal, fingering and tempo changes are not inferred. Swipe sideways inside the paper on small screens.

Edit notes & timing

Edits affect Edited MIDI; Raw MIDI stays unchanged.

Adjust range, pitch & timing

Edit individual notes

Select a note, edit, then Apply. Times are seconds from your selection’s start.

No note selected

My projects

Saves edits, settings and Raw + edited MIDI. Save again after changes.

Also back up original audio (up to 25 MB)

MIDI details

Supported recordings

Supported formats: MP3, WAV, FLAC, M4A/AAC and OGG, plus MP4/WebM with a browser-compatible audio track. Codec support depends on your browser.

How to convert audio to MIDI

Three steps, all on your device. No software to install.

For a compact walkthrough and a result you can check, open the audio-to-MIDI tool and listening guide.

Choose or record audio

Add a recording or use your microphone. Start with a short, clear phrase played or sung by one part.

Listen, select, convert

Select the phrase you need, listen to it, then press Convert selection to MIDI to detect its notes.

Listen and download MIDI

Compare the original audio with Raw MIDI, then download the free .mid file and assign an instrument in your DAW.

Why use this converter

A useful first pass for a clear recording. Clear, isolated notes work best; overlapping voices, drums and reverb can add false notes or hide quiet ones. Hear our controlled conversion tests and their limits.

Local audio processing

Your recording is decoded and transcribed on your device. Conversion does not upload your audio.

Free Raw MIDI downloads

Convert and download detected notes without an account, daily conversion limits or watermarks.

Settings for your recording

Start with a Voice, Piano & Guitar, Bass or General profile. Adjust detection thresholds if notes are missing or extra notes appear.

Use the MIDI in your next project

For notes you want to correct in the browser, open the MIDI editor to adjust pitch, note length and timing. Editing and previews are free; exporting the edits uses the optional Music Export Pack.

Working in a DAW? Follow the Logic Pro audio to MIDI guide for the Flex Pitch workflow, or the FL Studio audio to MIDI guide for NewTone and Piano Roll steps.

Want a new audio arrangement instead of MIDI notes? Explore AI music arrangement, a separate paid cloud tool.

FAQ

Are there free MIDI transcription programs available?

Yes. SoundToMIDI transcribes supported recordings in a compatible browser and lets you download Raw MIDI for free, without sign-up or daily conversion limits. Spotify also offers Basic Pitch as a browser demo and an open-source Python library. The optional Music Export Pack is paid and is not required for Raw MIDI.

Is my audio uploaded anywhere?

Conversion does not upload your audio. If you choose to save a project to your account, edits, settings and MIDI are uploaded. Original audio backup is a separate choice. AI arrangement is a separate cloud tool and asks for permission before uploading audio.

How accurate is the transcription?

SoundToMIDI uses Spotify's Basic Pitch model to estimate notes and timing. A clear, isolated instrument or voice is easier to transcribe than a full mix. Results may contain extra or missing notes, wrong octaves or imperfect timing. Listen to the Raw MIDI beside the original before using it.

Which apps can open the MIDI file?

The download is a standard .mid file for DAWs and notation software such as Logic Pro, FL Studio, Ableton Live and MuseScore. MIDI contains note instructions, not the original sound: assign an instrument to hear it.

Does it work on mobile?

Yes, in compatible modern mobile browsers. Start with a short phrase: processing uses your device, and long or complex recordings can take more time and memory. Audio codec support varies by browser.

How long does conversion take?

There is no fixed processing time: it depends on the selected duration, recording complexity and your device. Start with a short phrase. The first conversion also needs to load the transcription model.

Are there free MIDI converters with batch processing and high fidelity?

SoundToMIDI handles one selected recording at a time, not an unattended folder queue. It estimates notes rather than preserving the original audio sound, and even a short phrase may need correction. For repeatable multi-file processing, consider a local Basic Pitch script and check each result. Unlimited free conversions do not mean automatic batch processing or guaranteed accuracy.

Which MIDI tool do I need: a converter, an editor or an audio renderer?

Use audio-to-MIDI transcription when you have a recording and need editable notes. Use a MIDI editor when you already have a .mid file and want to change notes or timing. To turn MIDI into audible audio, load an instrument in a DAW and render it. These are different tasks; SoundToMIDI is not a general spreadsheet or data-file converter.

Ready to turn your audio into MIDI?

Free, private and unlimited — right in your browser.

Convert audio to MIDI