CAF to OGA Converter
FileFlip converts CAF to OGA entirely inside your browser, using WebCodecs and FFmpeg compiled to WebAssembly. The file is never uploaded to a server: it is read off your disk, converted on your own machine, and saved back by the browser. That means no file-size limit, no queue and no account.
How do I convert a CAF file to OGA?#
- Drop your CAF file onto the converter at the top of this page, or click it to pick one from your computer. You can add as many as you like.
- Leave the target set to OGA and the conversion starts on its own. FileFlip usually downloads nothing, falling back to 30.8 MB of WebAssembly if your browser cannot encode these codecs itself, then runs WebCodecs and FFmpeg on your own machine.
- Save the OGA file. Your browser writes it straight to your downloads folder, because there was never a server holding it.
Does converting CAF to OGA lose quality?#
Sometimes. When the codecs inside the CAF file are ones the OGA container can hold, the streams are copied straight across and nothing at all is lost. When they are not, the file has to be decoded and encoded again, and that step does cost a little quality.
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 CAF to OGA actually does to the file#
Converting CAF to OGA runs on WebCodecs and FFmpeg, usually downloads nothing, falling back to 30.8 MB of WebAssembly if your browser cannot encode these codecs itself, copies the streams through when the codecs fit and re-encodes when they do not.
| Engine | WebCodecs and FFmpeg |
|---|---|
| Conversion path | One step: CAF → OGA |
| Downloaded to your browser | Nothing in most browsers, or 30.8 MB if yours cannot encode these codecs itself |
| Quality | Lossless when the codecs fit, lossy when they do not |
| You get back | One file |
| Where it runs | In a background worker, so the page stays responsive |
What survives the conversion
| What is in the file | This conversion | Why |
|---|---|---|
| Encoded streams | Sometimes | Survives for some files and not others. |
Worth knowing before you start:
- whether the browser can do this without FFmpeg depends on the codecs it exposes through WebCodecs
- the encoded streams are copied when the file's codecs fit the target container, and re-encoded when they do not
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.
What is an OGA file?#
An OGA file is the same Ogg container as an OGG file, but under Xiph.Org's extension convention it marks audio using any codec, Vorbis, Opus, FLAC or Speex, rather than being reserved for Vorbis specifically.
Use OGA when you need an extension that correctly signals "Ogg audio" without asserting the file is specifically Vorbis.
Convert OGA to a single-codec format like MP3 or FLAC when a destination app infers the codec from the extension, since many tools still assume .oga could hold anything.
CAF to OGA 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.
What's the difference between OGG and OGA?
OGA and OGG are the exact same Ogg container format; only the extension differs. Xiph.Org's convention, in use since 2007, reserves .ogg for Vorbis-encoded audio specifically and uses .oga for Ogg audio that could be any codec, including FLAC or Opus, so an .oga file makes no promise about which codec is inside.