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M4A to CAF - Online Audio Converter
Convert M4A to CAF online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert M4A to CAF
Drop M4A audio here or click to select
M4A
CAF (PCM 16-bit)
About M4A to CAF
Convert M4A to CAF. M4A is the MPEG-4 audio container usually holding AAC or ALAC. CAF is Apple's 64-bit container for large recordings beyond WAV limits. Few Windows tools open it; convert WAV for sharing..
Why convert M4A to CAF?
- Larger files than lossy shares with CAF uncompressed quality.
- Keep quality where supported.
- Private, no upload - runs in your browser.
M4A vs CAF
| Codec | AAC | PCM 16-bit |
|---|---|---|
| Compression | lossy | uncompressed |
| Sample behavior | Quality set by bitrate | Full quality kept |
| Typical use | M4A is the MPEG-4 audio container usually holding AAC or ALAC. | CAF is Apple's 64-bit container for large recordings beyond WAV limits. |
When not to convert M4A to CAF
- Skip CAF for the smallest share: lossless output stays large, so prefer a lossy target when sending M4A files.
- Keep a master copy: repeated exports stack small losses, so archive M4A before batch CAF shares.
Limits
Starting point: M4A - M4A is the MPEG-4 audio container usually holding AAC or ALAC. Check whether the track is AAC or ALAC before picking settings. Few Windows tools open it; convert WAV for sharing. Encode CAF (PCM 16-bit) from M4A 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.
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FAQ
How do I convert M4A to CAF?
Drop your M4A 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.