Bulk M4A to OPUS Converter Online — Free HD Quality
Drag and drop your multiple M4A files into this 100% free online M4A to OPUS converter (.m4a to .opus), and click the Convert button to bulk convert them to OPUS format in HD quality. Use the quality slider to fine-tune your OPUS output, then download your converted files one by one or as a single ZIP — no signup and no downloads needed, and your original M4A files are removed from our servers right after. Also see:Batch process MP3 to M4A.
Drop your M4A files here to convert to OPUS, or click to browse
Converts .m4a to OPUS (.opus) in HD quality — bulk, free, no signup
Choose FilesM4A vs OPUS — File Format Comparison
See how M4A and OPUS compare across file extension, MIME type, compression, and feature support. Related:AIFF to FLAC conversion tool online.
| Feature | M4A | OPUS |
|---|---|---|
| File Extension | .m4a | .opus |
| MIME Type | audio/mp4 | audio/opus |
| Compression Type | Lossy | Lossy |
| Metadata Support | Yes | Yes |
What Is M4A Format?
MPEG-4 Audio — AAC audio in an MP4 container, the standard format for Apple Music, iTunes purchases, and iPhone voice memos, offering better quality than MP3 at equivalent bitrates. See also:Turn AIF into MP3.
- Compression: Lossy
- Tags & Metadata: Supported
What Is OPUS Format?
Opus — the IETF standard for internet voice and music streaming; outperforms MP3, AAC, and Vorbis at every bitrate, and is the default codec for WebRTC, Discord, and Spotify Connect.
- Compression: Lossy
- Tags & Metadata: Supported