SOUND IN. NOTES OUT.
Turn a recording into notes you can make your own.
Up to 5 minutes per conversion. Choose a section of a recording up to 15 minutes.
No account. No upload. Just your music.
Detected or imported notes will appear here.
Listen, take a look, then take them with you.
Click a note or choose one below. Drag to move; use the fields for precise edits.
Speed scales the current note timing: 200% is twice as fast. Pitch stays unchanged. Original audio is not time-stretched; Undo restores alignment.
Choose the tempo yourself; it is not detected. Quantization moves note starts and ends. Undo is available.
One merged MIDI track, note events and channels. Tempo changes are baked into seconds. Controllers, programs and pitch bends are not exported. WAV is a simple synth, not the original instrument.
| Note | Start | Length |
|---|
Clear, single-instrument recordings work best.
Complex mixes will need a little editing.
A FEW GOOD THINGS TO KNOW
This audio to MIDI converter accepts MP3, WAV, FLAC, OGG, M4A, AAC, AIFF and WMA. You can also choose MP4, MOV, AVI, MKV or WebM to transcribe the first audio track. Container support depends on the audio codec; encrypted or damaged media cannot be decoded.
Choose a recording, select a section and convert it, or open an existing MIDI. Compare the original with the synth at the same position. Select or drag notes, adjust pitch and timing, transpose, change speed or apply an optional grid. Every note edit can be undone. Download MIDI or a simple synthesized WAV.
Clear single melodies and isolated instruments work best. Chords can be detected, but dense mixes, drums, reverb and overlapping instruments may produce missing, extra or incorrect notes. This tool does not separate instruments into independent tracks. It does not preserve the original sound or export pitch bends.
Audio: up to 100 MB and 15 minutes, with sections up to 5 minutes for conversion. MIDI: format 0/1, PPQ timing, up to 5 MiB, 20,000 notes and one hour. Synth WAV export supports up to 10 minutes. Unsupported files are rejected, never silently trimmed. Processing speed depends on your device; keep this tab open and use short clips on phones. The local model loads when needed. If your browser cannot decode a format, a roughly 31 MiB decoder downloads from jsDelivr or unpkg; your audio stays on this device. Your source file is processed in memory, never uploaded or saved to a history.
QUESTIONS, ANSWERED
No. MIDI stores note instructions rather than recorded sound. Transcription estimates those notes from your recording. It is not a lossless format conversion.
Yes. WAV uses the same local transcription workflow as MP3 and the other supported formats. A clean recording matters more than the file extension.
You can try a song within the limits. The model supports polyphonic notes, but it works best with one instrument at a time. It does not reliably recreate an entire arrangement or separate instruments. Start with a short, clear section.
Move Note detection toward “Fewer stray notes” to reduce weak detections, or toward “More detail” to recover quieter notes, then convert again. These settings change detection thresholds, not the model's accuracy. Short adjacent fragments of the same pitch are joined by default. Turn this off for fast repeated notes. This cleanup is a heuristic, not a guarantee. Inspect and edit the result in your DAW.
No. Audio decoding and note recognition happen in your browser. No conversion API, analytics, login or file upload is used. Closing the page clears its in-memory work.
Silence, unpitched percussion, speech and very noisy recordings may not yield stable musical notes. Try a clear instrumental phrase. An empty result is reported honestly; no placeholder MIDI is generated.