CAF to OPUS Converter
Convert CAF files to OPUS in seconds, right in your browser. Drop in one file or a whole folder, pick your quality settings and download - nothing is uploaded to a server.
Drop CAF files here
MP3, WAV, FLAC, M4A, OGG, OPUS, AAC, AIFF, WMA, AMR, MP4, MOV & more · Processed on your device - nothing is uploaded
How to convert CAF to OPUS
- Click "Choose files" or drag your CAF files onto the page.
- Make sure "OPUS" is selected as the output format (128 kbps is a good default).
- Optionally click Edit to trim, adjust volume or add effects.
- Click Convert, then Download your OPUS files.
Why convert CAF to OPUS?
OPUS files are typically 5-10x smaller than CAF, making them ideal for phones, sharing and streaming.
OPUS is best for voice notes, WhatsApp/Discord audio, podcasts and streaming at small sizes. All modern browsers, Android, iOS 17+, WhatsApp, Discord, Telegram and VLC.
Will I lose quality?
OPUS is a lossy format, so some inaudible detail is removed to save space. At 128 kbps or higher most listeners cannot tell the difference from the original CAF.
CAF vs OPUS
| CAF | OPUS | |
|---|---|---|
| Full name | Core Audio Format | Opus Interactive Audio Codec |
| Type | uncompressed | lossy |
| Best for | Xcode/iOS app sounds and very long Apple recordings | voice notes, WhatsApp/Discord audio, podcasts and streaming at small sizes |
| Typical size | ~10 MB at 16-bit / 44.1 kHz per minute | ~0.9 MB at 128 kbps per minute |
| Compatibility | macOS, iOS, Logic Pro, Xcode. | All modern browsers, Android, iOS 17+, WhatsApp, Discord, Telegram and VLC. |
| Developed by | Apple (2005) | IETF / Xiph.Org (2012) |
CAF to OPUS: questions
How do I convert CAF to OPUS?
Open this page, add your CAF file, make sure OPUS is selected as the output format and click Convert. Your OPUS file is ready to download in seconds.
Will converting CAF to OPUS lose quality?
OPUS is a lossy format, so some inaudible detail is removed to save space. At 128 kbps or higher most listeners cannot tell the difference from the original CAF.
Is this CAF to OPUS converter free and safe?
Yes. It's free with no watermark or sign-up. Files are processed locally in your browser, so your audio is never uploaded or stored on our servers.
Can I convert many CAF files to OPUS at once?
Yes - add up to 5 files at a time on the free plan (unlimited with Pro), convert them all with one click and download them as a ZIP.
What is the difference between CAF and OPUS?
CAF (Core Audio Format) is a uncompressed format, apple's modern container for long recordings with no 4 GB file size limit. OPUS (Opus Interactive Audio Codec) is a compressed (lossy) format: the most efficient modern lossy codec. Opus delivers excellent quality at very low bitrates for both speech and music.
Does it work on Mac, Windows, iPhone and Android?
Yes. The CAF to OPUS converter runs in any modern browser - Chrome, Safari, Edge or Firefox - on desktop and mobile. No software to install.