FLAC to MIDI Converter Online
Turn lossless FLAC recordings, stems, or archive tracks into editable MIDI notes. MelodyTrace normalizes the FLAC input, transcribes its audio, and gives you a piano-roll result to review.
- FLAC
- Lossless compressed audio
- Editable MIDI
Click a note to hear it
How it works
Upload FLAC
Choose lossless FLAC recordings, stems, or archive tracks up to 50 MB and 10 minutes. Lossless compressed audio
Review the transcription
Play the detected notes on the piano roll, compare them with the source, and adjust sensitivity, minimum note length, or pitch bends when needed.
Edit and download MIDI
Download the result immediately, or sign in to correct notes and export notation for the next step in your music workflow.
Formats & limits
- Input formats
- FLAC
- Output
- MIDI (.mid)
- File limits
- 50 MB · 10 min
- Price
- Free · no sign-up
Preparing FLAC for a cleaner MIDI result
- Start from the isolated FLAC stem rather than the full master when your archive contains both.
- A clear single melody, vocal, or instrument line usually needs less cleanup than a dense finished mix.
- Trim long silence and unrelated sections before uploading so the transcription focuses on the passage you need.
- Lossless encoding preserves detail, but dense harmony still requires manual cleanup after transcription.
Frequently asked questions
How do I convert FLAC to MIDI?
Upload the FLAC file, wait while its audio is normalized and transcribed, review the piano-roll result, and download the generated .mid file.
Does converting FLAC preserve the original sound?
MIDI stores detected notes and timing, not the original waveform or instrument timbre. It is intended for editing and playback with a chosen instrument.
What FLAC files work best?
Start from the isolated FLAC stem rather than the full master when your archive contains both. Lossless encoding preserves detail, but dense harmony still requires manual cleanup after transcription.
What are the upload limits?
Each file can be up to 50 MB and 10 minutes long. Short, focused passages also finish sooner and are easier to verify.