Bulk MID to M4R Converter Online — Free HD Quality
Drag and drop your multiple MID files into this 100% free online MID to M4R converter (.mid to .m4r), and click the Convert button to bulk convert them to M4R format in HD quality. Use the quality slider to fine-tune your M4R output, then download your converted files one by one or as a single ZIP — no signup and no downloads needed, and your original MID files are removed from our servers right after. Also see:Save WMA as WAV.
Drop your MID files here to convert to M4R, or click to browse
Converts .mid to M4R (.m4r) in HD quality — bulk, free, no signup
Choose FilesMID vs M4R — File Format Comparison
See how MID and M4R compare across file extension, MIME type, compression, and feature support. Related:Convert MID to WAVE free.
| Feature | MID | M4R |
|---|---|---|
| File Extension | .mid | .m4r |
| MIME Type | audio/midi | audio/mp4 |
| Compression Type | Varies | Lossy |
| Metadata Support | Yes | Yes |
What Is MID Format?
MIDI File — Musical Instrument Digital Interface note-event data synthesised to audio using a soundfont; the .mid format is the universal standard for exchanging musical scores between DAWs, keyboards, and sequencers. See also:Quick MIDI to AIFF online converter.
- Compression: Varies
- Tags & Metadata: Supported
What Is M4R Format?
iPhone Ringtone — AAC audio in an MP4 container under 40 seconds, the format iTunes and iPhone use for custom ringtones; identical to M4A in encoding but recognised by iOS as a ringtone file.
- Compression: Lossy
- Tags & Metadata: Supported