CAF Converter

How to Convert a CAF File to Any Format

1. Upload Your CAF File: Drag and drop your .caf file onto the page or click "+ Add Files". Batch is supported — queue several recordings and convert them all with the same settings in one pass.
2. Pick an Output Format and Quality Preset: Choose a universal audio target — MP3, WAV, M4A, AAC, FLAC, OGG, or Opus — from the output dropdown, then set a Quality Preset or a Constant Bitrate (128 kbps suits speech, 192–320 kbps suits music). The converter can also wrap the audio into a video container such as MOV or MP4 over a black background if you need a video file.
3. Trim or Adjust Channels and Sample Rate (Optional): Use Trim to keep only part of a long recording, switch Audio Channel to mono to roughly halve the size of a single-source voice memo, or leave Audio Sample Rate on Original.
4. Convert and Download: Click "Convert". Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark, never shared.

Popular CAF Conversions

• CAF to MP3 — the universal target anything can play
• CAF to WAV — lossless audio for editing in any DAW
• CAF to M4A — stay in the Apple ecosystem at a smaller size
• CAF to AAC — efficient, widely supported lossy audio
• CAF to FLAC — lossless compression for archiving
• CAF to OGG — royalty-free audio for the open web
• CAF to Opus — smallest files for voice and streaming
• CAF to MP4 — wrap the audio into a shareable video file

Why Convert a CAF File?

CAF (Core Audio Format) is Apple's audio container, introduced with Mac OS X 10.4 Tiger in 2005. Its key design goal was to escape the 4 GB ceiling that WAV and AIFF inherit from 32-bit size fields: CAF uses 64-bit file offsets, so a single file can hold far more than 4 GB — long enough, Apple notes, for hundreds of hours of audio. It is a container, not a codec, and can wrap many encodings, most commonly uncompressed Linear PCM, but also AAC and Apple Lossless (ALAC), along with markers, channel layouts, and text annotations.

The catch is support. CAF plays cleanly in QuickTime, GarageBand, Logic, and on macOS and iOS, but Windows, Android, most media players, and web browsers don't open it natively. So the reason people convert a CAF is almost always reach:

• Play it anywhere — MP3 is the safest universal target; nearly every device and app made in the last two decades plays it. WAV is the equivalent for lossless playback and editing.
• Edit in a DAW or video editor — converting to WAV (or FLAC for a smaller lossless file) gives you a format Audacity, Reaper, Premiere, and Resolve all import without a plugin.
• Keep Apple quality at smaller size — if the CAF already wraps AAC, converting to M4A re-wraps the same audio without a second lossy pass.
• Shrink for sharing — a long PCM-based CAF can be large; re-encoding to MP3, AAC, or Opus brings a voice memo or interview down to a size that fits an email or chat attachment.

CAF vs. Its Common Audio Targets

Frequently Asked Questions

What is a CAF file and what opens it?

A CAF (Core Audio Format) file is Apple's audio container, introduced with Mac OS X 10.4 Tiger in 2005. It commonly comes from QuickTime recordings, GarageBand and Logic projects, and some app-generated audio. On a Mac it opens in QuickTime Player, GarageBand, or Logic; cross-platform, Audacity and VLC can open most CAF files. On Windows, Android, or the web, the simplest fix is to convert it to MP3 or WAV first so any player can read it.

Is a CAF file lossless or compressed?

It depends on what's inside. CAF is a container, so it can hold uncompressed Linear PCM (lossless, large), Apple Lossless / ALAC (lossless, compressed), or lossy codecs like AAC. A CAF straight from a Mac recording is usually PCM. That matters when you convert: PCM to MP3 is a genuine lossy step, while AAC inside a CAF re-encoded to MP3 is lossy-to-lossy and can't regain detail.

What's the best format to convert a CAF to for editing?

WAV. It carries uncompressed PCM that every DAW and video editor imports without a plugin, and it preserves the audio bit-for-bit if the source CAF was already PCM. If you want a lossless file that's roughly half the size of WAV, use FLAC instead — it's also lossless, just compressed. Reserve MP3 and AAC for playback and sharing, not editing.

Will I lose quality or metadata converting from CAF?

Audio quality is preserved when you convert to a lossless target (WAV or FLAC) from a lossless CAF; converting to MP3, AAC, OGG, or Opus is lossy but visually transparent at higher bitrates (256–320 kbps for MP3). CAF-specific metadata like markers and text annotations is not carried into simpler formats such as MP3 or WAV — those formats have no field for it — so if you rely on embedded markers, keep the original CAF alongside the converted copy.

Why is my CAF file so large, and how do I shrink it?

Because it most likely holds uncompressed PCM, which runs roughly 10 MB per stereo minute at CD quality. CAF's 64-bit design also lets it grow well past WAV's 4 GB limit, so multi-hour recordings get big. To shrink it, convert to a lossy format and lower the bitrate (96–128 kbps for speech), switch the channel to mono for a single-source voice memo, or use the Specific file size option to cap the output.

Can I turn a CAF audio file into a video?

Yes. Because this hub outputs to a video container by default, you can wrap the CAF's audio into an MP4 or MOV file with a solid background color — useful when a platform only accepts video uploads but you really just have audio. If you only want the sound, pick an audio target like CAF to MP3 instead so you don't end up with a large mostly-blank video.

Are my uploaded CAF files kept private?

Yes. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — never shared or made public, with no sign-up and no watermark. In our testing, a 3-minute stereo CAF holding Linear PCM (about 30 MB) converted to a 320 kbps MP3 of roughly 7 MB, and to a same-size WAV when we kept it lossless.