Private, on-device conversion
Audio to MIDI Converter
Upload an MP3, WAV, M4A, or FLAC file. The converter detects its notes and gives you a standard MIDI file to download.
- File name
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- File size
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- Duration
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- Format
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- Channels
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Your audio stays on this device. Nothing is uploaded. Read privacy details
Conversion limits
Pro supports unlimited conversions, up to 100 MB per file, and audio up to 10 minutes.
Before you convert
Prepare the recording first
- Choose a focused part. A vocal, guitar, piano, bass, or synth track gives the detector a clearer note target than a full mix.
- Trim the lead-in and noise. Clear note attacks make it easier to place the beginning of each MIDI note.
- Stay within the tool limits. The free plan accepts MP3, WAV, M4A, and FLAC files up to 20 MB and 4 minutes; the Pro plan allows up to 100 MB and 10 minutes.
Get a cleaner MIDI result
Treat the download as a first pass
- Listen beside the original. Compare the MIDI playback with the source before changing notes.
- Remove false notes. Check for stray events, duplicated notes, and octave jumps in your DAW.
- Correct timing after pitch. Fix the note choices first, then adjust timing when the intended rhythm is clear.
Detailed guide
Which converter should you use for each type of audio?
MP3 workflow
MP3 to MIDI Converter: Choose the right workflow
WAV workflow
WAV to MIDI Converter: Choose the route that fits the recording
Quick answers
Audio to MIDI Converter FAQ
Which audio files can I convert?
You can choose an MP3, WAV, M4A, or FLAC file.
Is my audio uploaded?
No. The audio is decoded and processed in your browser on your device.
How large or long can the file be?
Free plan: up to 20 MB per file and 4 minutes. Pro plan: up to 100 MB per file and 10 minutes.
What will I download?
The converter creates a standard MIDI file with a .mid filename for download.
Why does the MIDI need checking?
Audio transcription is a first pass. Listen beside the original and correct stray notes, timing, or octave jumps in your DAW.