Bulk M4R to AAC Converter Online — Free HD Quality
Drag and drop your multiple M4R files into this 100% free online M4R to AAC converter (.m4r to .aac), and click the Convert button to bulk convert them to AAC format in HD quality. Use the quality slider to fine-tune your AAC output, then download your converted files one by one or as a single ZIP — no signup and no downloads needed, and your original M4R files are removed from our servers right after. Also see:Best CAF to MP3 converter online.
Drop your M4R files here to convert to AAC, or click to browse
Converts .m4r to AAC (.aac) in HD quality — bulk, free, no signup
Choose FilesM4R vs AAC — File Format Comparison
See how M4R and AAC compare across file extension, MIME type, compression, and feature support. Related:Free M4R to Android Audio converter.
| Feature | M4R | AAC |
|---|---|---|
| File Extension | .m4r | .aac |
| MIME Type | audio/mp4 | audio/aac |
| Compression Type | Lossy | Lossy |
| Metadata Support | Yes | Yes |
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. See also:CAF to AAC converter.
- Compression: Lossy
- Tags & Metadata: Supported
What Is AAC Format?
Advanced Audio Coding — the successor to MP3 adopted by Apple, YouTube, and mobile platforms; delivers better quality than MP3 at the same bitrate, especially below 128 kbps.
- Compression: Lossy
- Tags & Metadata: Supported