Convert Opus to CAF
Convert any audio file to CAF format online for free. Fast, secure, and easy-to-use audio to CAF converter with no software installation required.
Drag & Drop Audio File
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Supported formats (Max 50MB, 30 min • Sign in for 200MB, 1 hr)
Why Choose Scriptivox Opus to CAF 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 Opus → CAF
Upload File
Drag and drop your Opus file or click to browse. Supports files up to 1GB.
Convert
Select CAF 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.
Opus vs CAF: format comparison
How the two formats differ on the things that change your result.
| Specification | Opus (source) | CAF (result) |
|---|---|---|
| Container | Ogg | Core Audio Format |
| Developed by | Xiph.Org / IETF | Apple |
| Introduced | 2012 | 2005 |
| Audio codecs | Opus | PCM, ALAC, AAC, Opus |
| Compression | Lossy | Depends on codec |
| Max sample rate | 48 kHz | 192 kHz |
| Max channels | 255 | 8 |
| Gapless playback | Yes | Yes |
| Metadata / tags | Vorbis comments | CAF metadata chunks |
| Approx. file size | 0.48–1.44 MB per minute | 1–32 MB per minute |
| Licensing | Royalty-free | Proprietary |
| Plays natively on | Native: Web browsers, Android · Needs a player: Windows, macOS, iOS | Native: macOS, iOS · Needs a player: Windows, Web browsers |
| Best for | voice and calls, podcasts, web delivery | iOS development, the Apple ecosystem, very long recordings |
What changes when you convert Opus to CAF
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.
Multichannel sources need care: CAF handles at most 8 channels where Opus allows 255, so anything wider is downmixed.
This conversion buys reach. CAF is natively supported on 2 additional platforms compared with Opus, which is usually the reason people convert in this direction.
This conversion moves the file toward a different purpose: Opus suits voice and calls, podcasts, web delivery, whereas CAF is chosen for iOS development, the Apple ecosystem, very long recordings.
Tags do not transfer verbatim. Opus stores them as Vorbis comments while CAF uses CAF metadata chunks, so titles and artwork are remapped and unusual custom fields may not survive.
About Opus to CAF Conversion
Converting Opus to CAF means moving audio out of the Ogg container, introduced in 2012, and into Core Audio Format, which arrived in 2005. The two were designed with different priorities, and that is what determines whether this conversion costs you quality, storage, or compatibility.
Developed by Xiph.Org / IETF in 2012, Opus stores audio using Opus. That codec choice sets the upper bound on what any conversion can preserve.
CAF, from Apple and dating to 2005, uses PCM, ALAC, AAC, 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.
Opus to CAF: common questions
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