Convert OPUS to CAF

Tested on Windows 11, 24 October 2026

Convert OPUS audio to CAF in your browser or in the Filoshi app for Windows. CAF can be lossy or lossless; Filoshi uses a high-quality setting. Nothing is uploaded.

Get Filoshi · $29Many files at once, no size limit, on Windows.

How to convert OPUS to CAF in your browser

  1. 1
    Drop your OPUS file
    Drag it onto Filoshi above, or press Choose your OPUS file to pick it on your computer.
  2. 2
    Filoshi converts it
    CAF is chosen already. FFmpeg, compiled to WebAssembly, converts it inside this browser tab.
  3. 3
    Save your CAF file
    Download it when it is ready. Nothing was sent to a server.
Source format

What is OPUS?

Opus Audio (.opus). Opus is an open, royalty-free codec standardised by the IETF in 2012. It sounds very good at low bitrates for both speech and music, and it is the codec of WebRTC video calls and many voice-message apps.

Common use: Voice messages, calls, streaming, podcasts

Output format

What is CAF?

Apple Core Audio Format (.caf). CAF is Apple's audio container for macOS and iOS. Unlike WAV and AIFF it has no 4 GB size limit, and it can hold PCM, AAC or Apple Lossless. Logic Pro, GarageBand and iOS apps use it.

Common use: Apple audio software and iOS app sounds

Questions about OPUS to CAF

Is converting OPUS to CAF free?
Yes, one file at a time: the converter on this page runs in your browser, files up to 100 MB, no sign-up. The Filoshi desktop app ($29 once, for Windows) converts many files at once and has no size limit.
Does converting OPUS to CAF lose quality?
It depends on how the CAF file is saved: CAF can be lossy or lossless. Filoshi uses a high-quality setting by default, and detail already removed by OPUS's compression cannot come back.
Is my OPUS file uploaded anywhere?
No. The converter on this page runs in your browser with FFmpeg compiled to WebAssembly; your OPUS file is read and converted on your device and never sent to a server. The desktop app works the same way, offline.
Has OPUS to CAF been tested?
Yes. OPUS to CAF is one of the 1,841 conversions that passed Filoshi's automated test matrix on Windows 11.
Can I convert many OPUS files at once?
Yes, in the desktop app. Drop as many OPUS files as you like on the window, pick CAF once for all of them, and each file shows its own progress. The new files appear next to the originals, which are never changed.

Related conversions

Other OPUS conversions

OPUS to MP3OPUS to AACOPUS to OGGOPUS to FLACOPUS to M4AOPUS to AIFFOPUS to AC3OPUS to AU

Convert to CAF

MP3 to CAFWAV to CAFAAC to CAFOGG to CAFFLAC to CAFM4A to CAFWMA to CAFAIFF to CAF

Need OPUS to CAF for many files?

The browser converter handles one file at a time. The Filoshi app for Windows converts as many as you drop, runs offline, and has 1,841 tested conversions.

Get Filoshi · $29