All Tools
[ audio bench ]
MP3 to MIDI - Online Audio Converter
Convert MP3 to MIDI online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert MP3 to MIDI
Drop MP3 audio here or click to select
MP3
MIDI (MIDI)
About MP3 to MIDI
Convert MP3 to MIDI. MP3 is the MPEG-1 Layer III codec, playable on virtually every device. MIDI packages note events for synths and notation tools. No audio is stored, so playback varies by synth..
Why convert MP3 to MIDI?
- Tiny files with MIDI note events (no audio samples).
- Keep quality where supported.
- Private, no upload - runs in your browser.
MP3 vs MIDI
| Codec | libmp3lame | MIDI |
|---|---|---|
| Compression | lossy | sequence |
| Sample behavior | Quality set by bitrate | Note events - no audio samples |
| Typical use | MP3 is the MPEG-1 Layer III codec, playable on virtually every device. | MIDI packages note events for synths and notation tools. |
When not to convert MP3 to MIDI
- Skip MIDI for recorded sound: it stores note events, not audio, so keep the MP3 recording.
- Keep a master copy: repeated exports stack small losses, so archive MP3 before batch MIDI shares.
Limits
Starting point: MP3 - Lossy compressed music near 128-256 kbps. Repeated re-encoding stacks artifacts; convert from the master. No audio is stored, so playback varies by synth. Encode MIDI (MIDI) from MP3 at 256k for music or 128k for speech, starting from the master.
How conversion works
Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.
Related conversions
FAQ
How do I convert MP3 to MIDI?
Drop your MP3 file onto this page, choose quality and codec settings, then click Convert. The result downloads as MIDI instantly. All processing runs in your browser.
What codec is used for MIDI?
The default codec for MIDI is MIDI. You can change audio parameters in Advanced mode.
How do you store my files?
We do not store any processed audio. All conversion happens entirely in your browser using FFmpeg WASM.