Convert CAF to Opus
Convert any audio file to Opus format online for free. Fast, secure, and easy-to-use audio to Opus converter with no software installation required.
Drag & Drop Audio File
or click below to browse
Supported formats (Max 50MB, 30 min • Sign in for 200MB, 1 hr)
Why Choose Scriptivox CAF to Opus Converter?
Fast Conversion
Our powerful servers process your files quickly, delivering converted files in seconds.
100% Free
Convert your files completely free with no hidden costs or subscription fees.
Secure & Private
Your files are encrypted and automatically deleted after conversion. We never store or share your data.
No Installation
Works directly in your web browser. No software download or installation required.
How to Use CAF → Opus
Upload File
Drag and drop your CAF file or click to browse. Supports files up to 1GB.
Convert
Select Opus as your output format and click convert. Our servers will process your file instantly.
Download
Download your converted file instantly. The download link expires in 1 hour for security.
CAF vs Opus: format comparison
How the two formats differ on the things that change your result.
| Specification | CAF (source) | Opus (result) |
|---|---|---|
| Container | Core Audio Format | Ogg |
| Developed by | Apple | Xiph.Org / IETF |
| Introduced | 2005 | 2012 |
| Audio codecs | PCM, ALAC, AAC, Opus | Opus |
| Compression | Depends on codec | Lossy |
| Max sample rate | 192 kHz | 48 kHz |
| Max channels | 8 | 255 |
| Gapless playback | Yes | Yes |
| Metadata / tags | CAF metadata chunks | Vorbis comments |
| Approx. file size | 1–32 MB per minute | 0.48–1.44 MB per minute |
| Licensing | Proprietary | Royalty-free |
| Plays natively on | Native: macOS, iOS · Needs a player: Windows, Web browsers | Native: Web browsers, Android · Needs a player: Windows, macOS, iOS |
| Best for | iOS development, the Apple ecosystem, very long recordings | voice and calls, podcasts, web delivery |
What changes when you convert CAF to Opus
Note that Core Audio Format does not imply one specific codec. It can wrap PCM, ALAC, AAC, Opus, so the compression behaviour of the result depends on the codec chosen rather than on the extension alone.
CAF can carry sample rates up to 192 kHz, but Opus tops out at 48 kHz. High-resolution sources are resampled down on the way through.
This conversion buys reach. Opus is natively supported on 2 additional platforms compared with CAF, which is usually the reason people convert in this direction.
This conversion moves the file toward a different purpose: CAF suits iOS development, the Apple ecosystem, very long recordings, whereas Opus is chosen for voice and calls, podcasts, web delivery.
Tags do not transfer verbatim. CAF stores them as CAF metadata chunks while Opus uses Vorbis comments, so titles and artwork are remapped and unusual custom fields may not survive.
About CAF to Opus Conversion
Converting CAF to Opus means moving audio out of the Core Audio Format container, introduced in 2005, and into Ogg, which arrived in 2012. The two were designed with different priorities, and that is what determines whether this conversion costs you quality, storage, or compatibility.
Developed by Apple in 2005, CAF stores audio using PCM, ALAC, AAC, Opus. That codec choice sets the upper bound on what any conversion can preserve.
Opus, from Xiph.Org / IETF and dating to 2012, uses Opus and plays natively on 2 of the six platform categories we track. That combination is usually why people convert into it.
After converting your file, you can use Scriptivox transcription services to convert your audio to text. Perfect for meetings, interviews, podcasts, and more.
CAF to Opus: common questions
Related conversions
Other CAF conversions
Other ways to get Opus
Popular Conversions
Quick access to the most commonly used file conversions
And many more format conversions supported