Core Audio Format is Apple's flexible audio container supporting any audio format. It is primarily used for macOS/iOS audio development and Apple audio workflows. No file size limit — unlike WAV's 4GB restriction

Is Xonvert open source?

Xonvert uses open-source conversion libraries (FFmpeg, libvips, etc.) compiled to WebAssembly. The conversion engine is transparent and trustworthy.

Can I use Xonvert offline?

Yes! Once the converter page has loaded, it works without an internet connection. All conversion logic runs locally in your browser.

Does MP3 to CAF conversion work on slow internet?

Yes — and even with no internet at all. Once the page loads, conversion is entirely offline. Speed depends on your device's CPU, not your internet connection.

How is Xonvert different from other online converters?

Most online converters upload your files to their servers. Xonvert processes everything locally in your browser — your files never leave your device. It's faster, more private, and works offline.

Is there a file size limit?

There is no strict file size limit. However, very large files (over 500MB) may be limited by your device's available memory.

What are the advantages of CAF over MP3?

Core Audio Format offers unlimited file size, supports every Apple audio codec, while MP3 Audio is known for universal compatibility with extremely small file sizes. The best choice depends on your specific needs — compatibility, quality, or file size.

Convert MP3 to CAF

Fast, free, and secure MP3 to CAF conversion. No registration required.

mp3

Audio

caf

Fast, free, and secure MP3 to CAF conversion. No registration required.

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High Quality

Maintain maximum quality during conversion

Fast Processing

Convert files in seconds with our optimized engine

Secure & Private

Files automatically deleted after conversion

How to Convert MP3 to CAF

Upload MP3 File

Click the "Select File" button to upload your mp3 file from your device.

Start Conversion

Click the "Convert" button to instantly start converting to CAF.

Download CAF

Download your converted caf file immediately after processing.

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