Single lead melody
A clear, one-note-at-a-time line converted with One melody or instrument.
One melody or instrument
- 17.84s MIDI
- 17.84s MIDI
- 1 track
- 1 track
- 18 notes
- 18 notes
Source audio
18s mono WAV
0:00 / 0:18
MIDI preview
Melody MIDI
Lossless audio input
WAV to MIDI Converter
AI online tool · free 30-second preview with a free account · WAV to editable .mid
Learn more
Choose one melody/instrument or a full song/multiple instruments, upload a WAV up to 25MB, then download an editable .mid file. WAV avoids additional lossy encoding, but accuracy still depends on the source recording, musical complexity, and reverb.
What does this audio contain?
Choose the option that best matches what you hear.
Choose a supported file, then convert it to an editable MIDI draft.
Choose the audio type above first
Free preview with a free account: up to 25.0 MB. Full conversion: up to 25.0 MB.
Choose what you want to convert
Formats: WAV / AIFF / FLAC. Max 25.0 MB.
PureMIDI product facts
PureMIDI is a web application that uploads supported recordings for server-side audio-to-MIDI transcription and returns editable MIDI drafts.
- Product
- PureMIDI analyzes notes in audio and transcribes them to MIDI; it is not an audio-codec converter.
- Intended for
- Musicians, producers, arrangers, students, and teachers working with recordings they own or are allowed to use.
- Supported input
- WAV, AIFF, or FLAC audio; one file up to 25MB.
- Output
- A standard .mid MIDI draft containing detected pitch, note timing, and velocity, ready for preview, download, and DAW editing.
- Workflow
- Choose one melody/instrument or a full song/multiple instruments → upload one file → AI transcribes the notes → preview or download the .mid → edit it in a DAW.
- What works best
- Clear pitched parts convert most cleanly. Dense mixes, noise, heavy reverb, compression, and drum-focused audio usually need a short pass in the editor or your DAW.
- Official source
- The official product name is PureMIDI and the canonical domain is puremidi.com. Official PureMIDI page
MIDI preview
Hear real conversion examples
Listen to the source and the MIDI side by side before trying your own file.
PureMIDI made the demo audio for this page. The MIDI is exactly what the converter returned, with no manual edits.
A clear melody usually gives the cleanest result. A full song gives you a multitrack draft to review and edit.
1 credit
MP3 melody
The same melody saved as MP3, then converted without editing the MIDI.
One melody or instrument
- 17.84s MIDI
- 17.84s MIDI
- 1 track
- 1 track
- 18 notes
- 18 notes
Source audio
18s 192 kbps MP3
0:00 / 0:18
MIDI preview
MP3 melody MIDI
Full-song draft
An arranged mix converted into an editable multitrack MIDI draft.
Full song or multiple instruments · September 2026
- 27.42s MIDI
- 27.42s MIDI
- 6 tracks
- 6 tracks
- 375 notes
- 375 notes
Source audio
29s stereo WAV
0:00 / 0:29
MIDI preview
Full-song MIDI
How WAV to MIDI works
- 01
Choose the type and upload WAV
Choose the audio type first, then add a 16-bit or 24-bit WAV up to 25MB.
- 02
AI transcribes notes
The model analyzes onsets, pitches, and velocities, then writes editable MIDI notes.
- 03
Download MIDI
Open the resulting .mid in Pro Tools, Logic, Cubase, Ableton, or any DAW for further editing.
When WAV to MIDI shines
Studio stem transcription
Turn pitch-clear vocal, guitar, piano, or bass stems into editable MIDI drafts.
Live performance capture
Convert live or rehearsal WAV recordings to MIDI for review and re-arrangement.
Sample-flip production
Turn sample loop WAVs into MIDI and remap them to your own sounds.
Classical and academic analysis
Convert high-quality performance WAVs to MIDI for notation, comparison, and study.
WAV input quality and accuracy
- WAV avoids extra lossy compression. Recording quality and arrangement still matter more than the file format.
- If you have a full mix, isolate one pitch-clear part first for top accuracy, or use full-song mode (6-15 credits by length) to generate a multi-track MIDI draft.
- Multi-channel surround WAVs should be downmixed to stereo or mono before upload.
- Heavy reverb smears note onsets — reduce wet level before exporting WAV when you can.
Studio WAV to MIDI workflow
If you have stem WAVs from a Pro Tools / Logic / Cubase / Reaper session, this is a practical way to work.
- 1. From your DAW, bounce each track to 24-bit / 48 kHz WAV (keep 0.5s of silence on both ends as alignment marker).
- 2. If vocals and lead are already isolated, upload them directly; otherwise isolate one clear part before conversion, or upload the full mix to full-song mode (6-15 credits by length) for a multi-track MIDI draft.
- 3. Upload vocal, guitar, piano, or bass stems individually to PureMIDI to get MIDI drafts.
- 4. Create matching MIDI tracks back in your DAW and import the MIDI files at the same alignment point.
- 5. Apply light quantization (10–30% strength) to preserve human feel, then assign the synth instruments from your session.
Stem type and recognition guidance
Different stems benefit from different preprocessing. The current model is strongest on pitch-clear parts.
| Stem type | Preprocessing | MIDI cleanup | Suggested instrument |
|---|---|---|---|
| Lead vocal | Denoise + de-reverb | Check note lengths and slides | Piano or vocal synth |
| Bass | Preserve the low fundamental | Check octave and short notes | Sub bass / electric bass |
| Lead piano / guitar | Light compression | Clean overlapping notes | Acoustic piano / EP |
| String pad | Reduce reverb | Split by pitch range | Strings / synth pad |
| Choir | De-reverb | Manual voice cleanup | Choir / voice patch |
| Drums / percussion | Not recommended as the primary input | Use manual or dedicated drum transcription | Map GM drums separately |
Core audio to MIDI paths
Choose the conversion path that matches your source. These pages separate general audio, compressed MP3, YouTube/YT workflows, and local MP4/video files so each search intent has one clear owner.
AI audio to MIDI converter
Best default for WAV, M4A, FLAC, recordings, stems, and authorized audio exported from video.
MP3 to MIDI converter
Use the MP3-specific page when your source is compressed MP3 and you need bitrate or retry guidance.
YouTube to MIDI workflow
Preview a link, confirm rights, then upload audio you own or are licensed to use for MIDI conversion.
MP4 / Video to MIDI converter
Upload a local MP4, MOV, WebM, or M4V and convert its audio track directly to MIDI.
Clean up MIDI after conversion
Once you have a .mid file, you can inspect tracks, quantize timing, tweak velocities, and export a cleaner MIDI before opening your DAW.
WAV to MIDI FAQ
Is WAV more accurate than MP3 for MIDI conversion?+
Not always. WAV avoids additional lossy compression, but results still depend on the source recording, overlapping instruments, noise, and reverb.
Do you support 24-bit WAV?+
Yes. 24-bit / 48kHz studio WAV files work directly.
What's the WAV file size limit?+
The current upload limit is 25MB per file for every account. Larger uploads and batch conversion are not available yet.
Can I convert multitrack WAV?+
The converter handles one file at a time. Split a mix into pitch-clear parts and convert each independently for best quality, or upload the mix to full-song mode (6-15 credits by length) for a multi-track MIDI draft. Drums and percussion may still need manual cleanup.
What if my WAV has heavy reverb?+
Try exporting a drier version. Reverb smears note onsets and lowers detection accuracy.
Does AIFF work too?+
Yes. AIFF is the same family of lossless formats and is supported.
What should I do with the MIDI after export?+
Quantize lightly, tweak velocities, and assign instruments in your DAW for the most musical playback.
Is it good for classical analysis?+
Yes. Convert lossless recordings to MIDI, then import into Sibelius, Dorico, or MuseScore for pitch, rhythm, and expression analysis.
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MP3 to MIDI
Convert MP3 songs or MP3 audio exported from video into editable MIDI.
YouTube to MIDI Converter
Preview YouTube/YT links, then upload authorized audio for MIDI conversion.
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