Convert OPUS to CAF
OPUS is great for voice messages, calls and streaming at low bitrates, but CAF is the better choice for iOS app sounds and Apple developer workflows. Convert OPUS to CAF in seconds, right in your browser.
- No upload — 100% private
- Fast, lossless when possible
- Free & unlimited
- Works on iPhone & Android
Keep this tab open — the conversion runs on your device, nothing is uploaded.
Add more files above to keep converting.
How to convert OPUS to CAF
- 1
Tap Choose files and select one or more OPUS files (or drag them in).
- 2
Check that CAF is selected. Use Advanced options for bitrate, channels or trimming.
- 3
Press Convert. Everything happens on your device — no upload, no waiting in a queue.
- 4
Your CAF downloads automatically. Converting several files? Grab them all as a ZIP.
OPUS vs CAF
CAF is lossless, but it can't restore detail already removed by OPUS's compression — the file just gets bigger. Convert when an app or editor requires CAF.
| OPUS | CAF | |
|---|---|---|
| Full name | Opus Audio | Core Audio Format |
| Type | Audio | Audio |
| Compression | Lossy | Lossless |
| Developed by | IETF / Xiph.Org | Apple |
| Introduced | 2012 | 2005 |
| Plays on iPhone | ◐ Partly / with an app | ✓ Yes |
| Plays on Android | ✓ Yes | ✕ No |
| Plays on Windows | ✓ Yes | ✕ No |
| Plays on Mac | ✓ Yes | ✓ Yes |
About OPUS and CAF
OPUS: Opus is a modern, highly efficient codec used by WhatsApp voice notes, Discord, Zoom and WebRTC calls. It sounds excellent even at very low bitrates.
CAF: CAF is Apple's flexible audio container used inside iOS and macOS apps and by GarageBand. Files can be any length and hold many codecs.
Frequently asked questions
How do I convert OPUS to CAF on my phone?
Will converting OPUS to CAF reduce quality?
Is this OPUS to CAF converter free?
Are my files uploaded to a server?
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