Bulk CAF to M4R Converter Online — Free HD Quality
Drag and drop your multiple CAF files into this 100% free online CAF to M4R converter (.caf 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 CAF files are removed from our servers right after. Also see:Free online MP3 to AIFF tool.
Drop your CAF files here to convert to M4R, or click to browse
Converts .caf to M4R (.m4r) in HD quality — bulk, free, no signup
Choose FilesCAF vs M4R — File Format Comparison
See how CAF and M4R compare across file extension, MIME type, compression, and feature support. Related:How to batch convert 3GA to WAV?.
| Feature | CAF | M4R |
|---|---|---|
| File Extension | .caf | .m4r |
| MIME Type | audio/x-caf | audio/mp4 |
| Compression Type | Lossless | Lossy |
| Metadata Support | Yes | Yes |
What Is CAF Format?
Core Audio Format — Apple's flexible container for macOS and iOS supporting any codec (AAC, ALAC, PCM, MP3) with no file-size limit, used internally by Xcode, Logic Pro, and macOS system sounds. See also:Online CAF to WAVE converter tool.
- Compression: Lossless
- 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