Tools / File Converter / W64 to AU Converter

W64 to AU Converter

Convert W64 files to AU. Free, without uploading.

This tool converts W64 files to AU. Sony Wave64 (large WAV).

Sun/NeXT audio. AU is lossless, so the audio keeps the quality it has in the W64 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 W64 file, 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 W64 file is converted to AU inside your browser.