Convert M4A to CAF
M4A is great for high-quality music and voice recordings for Apple and Android devices, but CAF is the better choice for iOS app sounds and Apple developer workflows. Convert M4A 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 M4A to CAF
- 1
Tap Choose files and select one or more M4A 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.
M4A vs CAF
CAF is lossless, but it can't restore detail already removed by M4A's compression — the file just gets bigger. Convert when an app or editor requires CAF.
| M4A | CAF | |
|---|---|---|
| Full name | MPEG-4 Audio (AAC) | Core Audio Format |
| Type | Audio | Audio |
| Compression | Lossy | Lossless |
| Developed by | Apple / MPEG | Apple |
| Introduced | 2001 | 2005 |
| Plays on iPhone | ✓ Yes | ✓ Yes |
| Plays on Android | ✓ Yes | ✕ No |
| Plays on Windows | ✓ Yes | ✕ No |
| Plays on Mac | ✓ Yes | ✓ Yes |
About M4A and CAF
M4A: M4A is an MPEG-4 container holding AAC audio. It sounds better than MP3 at the same size and is the default format for iPhone voice memos, Apple Music downloads and many Android recorders.
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 M4A to CAF on my phone?
Will converting M4A to CAF reduce quality?
Is this M4A to CAF converter free?
Are my files uploaded to a server?
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