CAF to AIFF Converter
Convert CAF to AIFF online for free. Fast, secure, and high-quality conversion with no sign-up or software required.
Maximum file size is 1GB
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Three steps to your converted file
Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.
Upload your file
Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.
Choose an output format
Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.
Convert & download
Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.
What is a CAF file?
The Core Audio Format (CAF) is a container designed by Apple Inc. to overcome the 4 GB size limitation of legacy formats like AIFF and WAV. Introduced with Mac OS X 10.4, it uses 64-bit file offsets, allowing for massive data storage suitable for long-duration, high-resolution multi-channel recordings. The format is a wrapper that can contain various audio data types, including Linear PCM, Apple Lossless (ALAC), and AAC, organized into a chunk-based structure comprising a header, audio data chunk, and optional metadata chunks such as packet tables.
How to open a CAF file
CAF is natively supported within the Apple ecosystem, including macOS (QuickTime Player, Logic Pro, GarageBand) and iOS devices. On Windows and Linux, native support is nonexistent; users must rely on the VLC media player or Audacity (with FFmpeg libraries) to decode the container. Specialized audio engineering software such as GoldWave or Adobe Audition also handles CAF inputs.
CAF Technical Info
- Full Name
- Core Audio Format
- Developed By
- Apple Inc.
- Initial Release
- 2005
- MIME Type
- audio/x-caf
What is an AIFF file?
The AIFF (Audio Interchange File Format) is a lossless audio container format developed by Apple Inc., functioning as the standard uncompressed audio format for the Macintosh platform. Based on the EA IFF 85 standard, AIFF files store data in Pulse Code Modulation (PCM) format using big-endian byte ordering. It is functionally analogous to the WAV format used on Windows but differs in its header structure and byte sequence. AIFF is widely used in professional audio recording and editing due to its lack of compression artifacts and high-fidelity signal retention.
How to open an AIFF file
AIFF is the native uncompressed audio format for macOS, allowing files to be opened immediately in QuickTime, Apple Music, and Logic Pro. Windows users can open AIFF files using Windows Media Player, though some metadata may not render correctly. For professional manipulation or playback on Linux and Windows systems, VLC Media Player and Adobe Audition are the industry-standard recommendations, ensuring accurate interpretation of the big-endian PCM data streams.
AIFF Technical Info
- Full Name
- Audio Interchange File Format
- Developed By
- Apple Inc.
- Initial Release
- 1988
- MIME Type
- audio/x-aiff
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Every CAF to AIFF conversion runs on our servers, so your device stays fast and the output quality stays intact.
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Developer API
Convert CAF to AIFF via API
Automate CAF to AIFF conversions in three steps: create a job, upload your file, then poll for the result.
# 1. Create job
curl -X POST https://api.runconvert.com/v3/jobs \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"tag": "caf-to-aiff",
"tasks": {
"upload-file": {
"operation": "import/upload"
},
"convert": {
"operation": "convert",
"input": "upload-file",
"output_format": "aiff"
},
"export-result": {
"operation": "export/url",
"input": "convert"
}
}
}'
# 2. Upload your file (use upload_url from the response)
curl -X PUT "$UPLOAD_URL" --upload-file input.caf
# 3. Poll for result
curl https://api.runconvert.com/v3/jobs/$JOB_ID?include=tasks \
-H "Authorization: Bearer YOUR_API_KEY"Replace YOUR_API_KEY with your RunConvert API key. Get your free API key at runconvert.com/api.