AU to WAV Converter
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Supports: AU
Advanced Options - Our defaults are optimized for the best results. We recommend you keeping the defaults unless you have a specific need.
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Need help?How to Convert AU to WAV Online
- Upload Your AU Files: Click "+ Add Files" to select AU (Sun/Unix audio) files from your computer, Google Drive, or Dropbox. Batch upload supported.
- Choose Settings: Select audio codec, compression method (quality preset, target file size, or bitrate), sample rate, and channel configuration (stereo/mono). Optionally trim with start time and duration.
- Convert and Download: Click "Convert" and download your WAV files.
Why Convert AU to WAV?
AU is Sun Microsystems' legacy audio format for Unix. WAV is the universal uncompressed audio standard:
Universal Editor Support
WAV works in every audio editor — Audacity, Pro Tools, Logic Pro, Ableton, FL Studio. AU support is limited.
Cross-Platform Compatibility
WAV plays on Windows, macOS, Linux, and all mobile devices. AU is primarily supported on Unix/Linux.
Competitors like anyconv.com explains "AU is a simple audio format developed by Sun Microsystems for Unix systems" containing "uncompressed PCM or μ-law encoded samples." runconvert.com recommends "VLC or Audacity to import AU and convert to modern PCM formats like WAV." convertio.co offers a "without reencoding" option when possible.
AU vs WAV
| Feature | AU | WAV |
|---|---|---|
| Developer | Sun Microsystems | Microsoft/IBM |
| Platform | Unix/Linux | ✅ Universal |
| Codec | μ-law, A-law, PCM | Usually PCM |
| Editor support | ⚠️ Limited | ✅ Universal |
| Modern use | ❌ Legacy | ✅ Standard |
Frequently Asked Questions
Is it free?
Yes. Completely free with no sign-up required and no file count limits.
Is there quality loss?
If the AU file uses PCM (uncompressed), conversion to WAV is lossless. If AU uses μ-law compression, the audio is decoded to uncompressed WAV.
Can I convert multiple files at once?
Yes. Upload multiple AU files and convert them all with the same settings.
Does it work on mobile?
Yes. Works in any modern browser on all devices — no app installation required.