Convert OPUS to M4A
Free, fast and secure — convert OPUS to M4A right in your browser.
Convert OPUS to M4A for wider compatibility
Converting OPUS to M4A gives you a more widely supported file that opens cleanly across more devices, apps and platforms — handy when OPUS will not play nicely everywhere.
How to convert OPUS to M4A
- 1 Drop your OPUS file into the converter above.
- 2 It is converted to M4A automatically — no settings to fiddle with.
- 3 Download your new M4A file instantly.
OPUS vs M4A
| Feature | OPUS | M4A |
|---|---|---|
| Compression | Lossy | Lossy |
| MIME type | audio/opus | audio/mp4 |
| Best for | Voice chat, podcasts and streaming where bandwidth efficiency is critical. | High-quality music and voice on Apple devices and modern apps. |
About the formats
Opus audio
Opus is a state-of-the-art codec that delivers superb quality at very low bitrates. It powers most modern voice and streaming apps but is less common for stored files.
Strengths
- Best-in-class quality at low bitrates
- Excellent for voice and streaming
- Open and royalty-free
Limitations
- Limited support in older players
- Uncommon for downloads
- Few hardware decoders
Best for: Voice chat, podcasts and streaming where bandwidth efficiency is critical.
M4A (AAC) audio
M4A holds AAC audio, the default for Apple Music and iTunes. It generally sounds better than MP3 at the same bitrate and is well supported on modern devices.
Strengths
- Better quality than MP3 at equal size
- Default on Apple platforms
- Efficient, modern codec
Limitations
- Slightly less universal than MP3
- Lossy compression
- Occasional legacy-player issues
Best for: High-quality music and voice on Apple devices and modern apps.