Tools / File Converter / WEBM to AU Converter

WEBM to AU Converter

Convert WEBM files to AU. Free, without uploading.

This tool converts WEBM files to AU. WEBM is an open video format built for the web (VP8/VP9 video, Opus audio). Browsers play it natively.

Sun/NeXT audio. Only the audio of the WEBM video is kept and saved as AU; the picture is dropped. AU is lossless, so the audio keeps the quality it has in the WEBM 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 WEBM 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 AU file.

Frequently asked questions

Will audio quality drop when converting to AU?

No. AU 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 WEBM file is converted to AU inside your browser.