.mid Musical Instrument Digital Interface
MIDI Converter
MIDI files contain musical notes, not recorded sound, so they need a synthesizer to play. Old phone ringtones were often MIDI.
- No upload — 100% private
- Fast, lossless when possible
- Free & unlimited
- Works on iPhone & Android
Working…
Keep this tab open — the conversion runs on your device, nothing is uploaded.
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✓ Done — your files are saved to Downloads
Add more files above to keep converting.
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MIDI at a glance
| Full name | Musical Instrument Digital Interface |
|---|---|
| Type | Audio |
| Compression | Lossy (compressed) |
| Developed by | MIDI Association |
| Introduced | 1983 |
| File extension | .mid, .midi |
| Plays on iPhone | ✕ No |
| Plays on Android | ◐ Partly / with an app |
| Plays on Windows | ✓ Yes |
| Plays on Mac | ✓ Yes |
MIDI is best for sheet-music style instrument data.
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Frequently asked questions
What is a .mid file?
MIDI files contain musical notes, not recorded sound, so they need a synthesizer to play. Old phone ringtones were often MIDI.
How do I open a MIDI file?
On a computer, VLC Media Player opens almost any .mid file. On phones, the quickest fix is to convert it to MP3 or M4A above. Those formats play in every music app.
Can I convert MIDI for free?
Yes. The converter on this page is free and unlimited, and it works without uploading anything.