How do I convert a .ASF file online for free?

Select a target format from the list on this page (e.g. A64, AAC, AIFF), configure any settings, then click Start Conversion. No software to install, no account required for files up to 25 MB.

What formats can I convert .ASF to?

You can convert .ASF to 58 formats including A64, AAC, AIFF and 55 more.

Is the .ASF converter free?

Yes, completely free for files up to 25 MB, 5 conversions a day. No account or credit card needed. Bigger files are coming with the Pro plan.

Is my .ASF file kept private?

Yes. Files are uploaded over an encrypted connection and permanently deleted from our servers within 24 hours. We never read, store, or share your files.

Can I convert multiple .ASF files at once?

On the free tier files are converted one at a time. Batch conversion (up to 10 files) is planned for the Pro tier.

ASF File Converter — Convert .ASF to A64, AAC, AIFF & More

ASF is Microsoft's proprietary digital audio/digital video container format, designed especially for streaming media. It typically contains WMA or WMV content.

Free online No signup required Files deleted within 24 hours

Source Format

Advanced Systems Format

.asf

Video

ASF is Microsoft's proprietary digital audio/digital video container format, designed especially for streaming media. It typically contains WMA or WMV...

video/x-ms-asf

Learn more

Convert ASF to (58 formats)

.asf

Select a Target Format

Choose one of the 58 output formats on the left to configure your conversion options.

Popular ASF Conversions

ASF→A64 ASF→AAC ASF→AIFF ASF→ALAW ASF→APNG ASF→APTX ASF→ASF ASF→AST ASF→AVI

What is a .ASF file?

ASF is Microsoft's proprietary digital audio/digital video container format, designed especially for streaming media. It typically contains WMA or WMV content.

File Extension: .asf
MIME Type: video/x-ms-asf
Category: Video
Output Formats: 58 supported

Frequently Asked Questions

A .ASF file is a Advanced Systems Format format used in the video category. You can view the full technical details on this page, or convert it to another format using the tool above.