WMA
→
AU

Convert WMA to AU Online

Convert WMA to AU online. Start with free daily conversions, no install, no watermarks, and visible job status.

WMA to AU Converter

Upload your WMA file to convert it to AU format

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How to Convert WMA to AU

Follow these simple steps

1

Step 1: Upload Your File

Upload your WMA file by dragging and dropping or clicking to browse

2

Step 2: Select Output Format

AU is automatically selected as the output format

3

Step 3: Start Conversion

Click the Convert button to start the conversion

4

Step 4: Download Result

Download your converted AU file when ready

Convert WMA to AU - Complete Guide

Converting WMA to AU stays in the audio file family but changes the traits that decide size, quality, transparency, editability, or device support. WMA is a audio format. Windows Media Audio. AU is a audio format. Sun audio. Below is what actually changes in a WMA→AU conversion, what is preserved, and when AU is the better choice than keeping WMA.

What changes when you convert WMA to AU

  • The audio is re-encoded into the AU format. Because re-encoding is not free, start from the highest-quality source you have and keep quality settings high.
  • Expect a larger output file: AU stores WMA content with less aggressive compression.

About the WMA format

WMA (Windows Media Audio) is Microsoft's audio format. While native to Windows, it has limited compatibility elsewhere. Our converter transforms WMA to universal formats.

  • Full name: Windows Media Audio
  • Developer: Microsoft
  • Compression: Lossy/Lossless
  • Opens with: Windows Media Player, VLC

Where WMA is strong: compact audio from the Windows ecosystem.

Typical WMA uses: legacy Windows audio.

About the AU format

AU is a audio format. Sun audio.

  • Compression: mixed
  • Opens with: VLC, Audacity, FFmpeg

Where AU is strong: simple legacy format from Sun/NeXT systems; stores uncompressed PCM or companded mu-law/A-law audio; easy to read and parse.

Typical AU uses: legacy Unix and Java system sounds, older audio archives.

What AU keeps

  • AU adds: simple legacy format from Sun/NeXT systems.

Things to watch out for

  • One AU limitation to keep in mind: dated format rarely used today.

When to convert WMA to AU

  • Convert WMA to AU for legacy Unix and Java system sounds.
  • Convert WMA to AU for older audio archives.
  • Pick AU when you need stores uncompressed PCM or companded mu-law/A-law audio.

WMA vs AU — format comparison

A quick side-by-side of the structural differences between WMA and AU, so you can confirm this is the right conversion for your file:

AttributeWMAAU
TypeAudio fileAudio file
CompressionLossyFlexible (lossy or lossless)
Web-friendlyNoNo
Typical file sizeSmallMedium
Best forlegacy Windows audiolegacy Unix and Java system sounds

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Need the opposite conversion?

Convert AU to WMA

Other WMA Conversions

More formats you can convert WMA to

Convert WMA to MP3Convert WMA to WAVConvert WMA to AACConvert WMA to OGGConvert WMA to FLACConvert WMA to M4AConvert WMA to AIFFConvert WMA to OPUSConvert WMA to AC3Convert WMA to AMRConvert WMA to CAFConvert WMA to MKAConvert WMA to WVConvert WMA to SPXConvert WMA to OGAConvert WMA to DTSConvert WMA to MP2
View all WMA conversions →

Convert to AU

Other formats you can convert to AU

Convert MP3 to AUConvert WAV to AUConvert AAC to AUConvert OGG to AUConvert FLAC to AUConvert M4A to AUConvert AIFF to AUConvert OPUS to AUConvert AC3 to AUConvert AMR to AUConvert CAF to AUConvert MKA to AUConvert WV to AUConvert SPX to AUConvert OGA to AUConvert DTS to AUConvert MP2 to AU
View all AU conversions →

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WMA to AU FAQ

Converting WMA to AU preserves the content faithfully; output also depends on the source file and any settings you choose.
Upload your WMA file, confirm AU as the output format, and click Convert. Job status is shown while the file is processed, then you can download the AU result.
Yes. You can start with free daily conversions, with no signup required for your first jobs and no watermarks on the output. Accounts and paid plans are available for higher-volume work.
No. The WMA to AU conversion runs in your browser on any device — Windows, Mac, Linux, iOS, or Android — with uploads and downloads over HTTPS.
WMA (Windows Media Audio) is an audio file format. WMA files can be played with various audio players and media applications.
Upload your WMA audio file to the converter, select your desired output format, and click Convert. The job status appears while the audio is processed.
You can start with free daily conversions. Accounts and paid plans are available for higher-volume work, and downloaded files are not watermarked.
You can convert WMA to proof-backed audio outputs such as MP3, WAV, AAC, OGG, FLAC, M4A, WMA, AIFF, OPUS, AC3, AMR, AU, CAF, MKA, WV, SPX, OGA, DTS, and MP2 when the source format is public-supported.
Yes! Our WMA converter works on any device including smartphones and tablets.
Choose the bitrate or output setting that fits your file-size and playback needs. Lossy formats can reduce detail compared with the source.

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