Tools / File Converter / ASF to CAF Converter

ASF to CAF Converter

Convert ASF files to CAF. Free, without uploading.

This tool converts ASF files to CAF. Advanced Systems Format.

Apple Core Audio. Only the audio of the ASF video is kept and saved as CAF; the picture is dropped. CAF is lossless, so the audio keeps the quality it has in the ASF file.

Conversion runs on your device; your file is never sent to a server. The components download once on first use, and later conversions start right away.

How to use

1. Choose the ASF video, drag it in, or paste its link.
2. Choose the audio quality; optionally enter a start and end time.
3. Press "Convert" and download the CAF file.

Frequently asked questions

Will audio quality drop when converting to CAF?

No. CAF is lossless.

Is there a file size limit?

No fixed limit; your device’s memory decides. Computers usually handle files up to 1–2 GB.

Is my file uploaded?

No. Your ASF file is converted to CAF inside your browser.