CAF Converter
FileFlip converts CAF files into 11 other formats entirely inside your browser, using FFmpeg and WebCodecs compiled to WebAssembly. The CAF file is never uploaded to a server: it is read off your disk, converted on your own machine, and saved back by the browser. There is no file-size limit and no account to create.
How do I convert a CAF file?#
- Drop your CAF file onto the converter at the top of this page, or click it to pick one from your computer.
- Choose the format you want out of it. FileFlip downloads the engine that conversion needs, once, and your browser caches it.
- Conversion starts the moment you pick the format, and the result is yours to download. The work happens in this tab, so nothing is uploaded and nothing is queued.
Is it safe to convert CAF files online?#
Yes, because nothing is uploaded. FileFlip converts CAF files inside the browser tab you already have open, using WebAssembly builds of the same engines a desktop converter would install. Your file is read from your own disk into the page's memory, and no request carrying it is ever made.
You do not have to take that on trust. Open your browser's network panel, run a conversion, and you will see the engine come down and your file go nowhere. There is no upload, no server-side copy, no retention window, and no account tied to what you converted.
How FileFlip works lists every engine, its version and its download size, and shows how to check for yourself that nothing leaves your machine.
What happens to a CAF file#
FileFlip converts CAF into 11 formats with FFmpeg and WebCodecs, all of it inside the browser tab. Each conversion below names the engine it uses, what it downloads, and exactly what that conversion keeps or drops.
| Category | Audio Files |
|---|---|
| File extension | .caf |
| FileFlip support | Read and written |
| Conversions available | 11 |
| Engines | FFmpeg and WebCodecs |
| Downloaded to your browser | 30.8 MB on the first conversion, then cached |
What is a CAF file?#
A CAF file holds audio in Apple's Core Audio Format, introduced in 2005 to replace AIFF and WAV on the Mac because its 64-bit chunk sizes have no practical file size or duration limit.
Keep audio as CAF while it stays inside Apple's own tools, such as Logic Pro, GarageBand, or an iOS app's own audio recordings, where the format's size and codec flexibility are used directly.
Convert CAF to WAV or M4A when the audio needs to leave the Apple ecosystem, since most non-Apple software has no built-in way to open it.
The CAF file format reference covers the specification, the programs that open one, and what each conversion keeps or drops.
CAF questions people ask#
What creates a CAF file?
CAF files come from Apple's own audio software, including Logic Pro, GarageBand, and any iOS or macOS app that records audio through Apple's Core Audio APIs. Apple adopted CAF as its own format specifically to avoid the 4 GB size limit that WAV and AIFF both carry.
What still opens CAF files?
QuickTime Player, Logic Pro, and GarageBand open CAF natively on macOS, and VLC decodes it on Windows and Linux as well. Very little non-Apple software supports it directly.
What should I convert a CAF file to?
Convert CAF to WAV for lossless compatibility with editing software, or to M4A for a smaller file that still plays on non-Apple devices. Whether the conversion loses quality depends on what codec the CAF file already holds inside; a CAF containing uncompressed PCM converts to WAV with no loss at all.