All Tools
[ audio bench ]
GSM to CAF - Online Audio Converter
Convert GSM to CAF online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert GSM to CAF
Drop GSM audio here or click to select
GSM
CAF (PCM 16-bit)
About GSM to CAF
Convert GSM to CAF. GSM 06.10 encodes European mobile speech at 13 kbps. CAF is Apple's 64-bit container for large recordings beyond WAV limits. Few Windows tools open it; convert WAV for sharing..
Why convert GSM to CAF?
- Larger files than lossy shares with CAF uncompressed quality.
- Keep quality where supported.
- Private, no upload - runs in your browser.
GSM vs CAF
| Codec | GSM | PCM 16-bit |
|---|---|---|
| Compression | lossy | uncompressed |
| Sample behavior | Quality set by bitrate | Full quality kept |
| Typical use | GSM 06.10 encodes European mobile speech at 13 kbps. | CAF is Apple's 64-bit container for large recordings beyond WAV limits. |
When not to convert GSM to CAF
- Skip CAF for the smallest share: lossless output stays large, so prefer a lossy target when sending GSM files.
- Keep a master copy: repeated exports stack small losses, so archive GSM before batch CAF shares.
Limits
Starting point: GSM - GSM 06.10 encodes European mobile speech at 13 kbps. Carrier framing can offset timing; verify duration. Few Windows tools open it; convert WAV for sharing. Encode CAF (PCM 16-bit) from GSM at 256k for music or 128k for speech, starting from the master.
How conversion works
Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.
Related conversions
FAQ
How do I convert GSM to CAF?
Drop your GSM file onto this page, choose quality and codec settings, then click Convert. The result downloads as CAF instantly. All processing runs in your browser.
What codec is used for CAF?
The default codec for CAF is PCM 16-bit. You can change audio parameters in Advanced mode.
How do you store my files?
We do not store any processed audio. All conversion happens entirely in your browser using FFmpeg WASM.