Bulk OPUS to M4A Converter Online — Free HD Quality
Drag and drop your multiple OPUS files into this 100% free online OPUS to M4A converter (.opus to .m4a), and click the Convert button to bulk convert them to M4A format in HD quality. Use the quality slider to fine-tune your M4A output, then download your converted files one by one or as a single ZIP — no signup and no downloads needed, and your original OPUS files are removed from our servers right after. Also see:Transform OPUS to MP3.
Drop your OPUS files here to convert to M4A, or click to browse
Converts .opus to M4A (.m4a) in HD quality — bulk, free, no signup
Choose FilesOPUS vs M4A — File Format Comparison
See how OPUS and M4A compare across file extension, MIME type, compression, and feature support. Related:WAV to OPUS converter.
| Feature | OPUS | M4A |
|---|---|---|
| File Extension | .opus | .m4a |
| MIME Type | audio/opus | audio/mp4 |
| Compression Type | Lossy | Lossy |
| Metadata Support | Yes | Yes |
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. See also:How to batch convert AAC to iPad Audio?.
- Compression: Lossy
- Tags & Metadata: Supported
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.
- Compression: Lossy
- Tags & Metadata: Supported