AU to WMA — Format Comparison & Online Converter
Fast, instant AU to WMA conversion. No signup required. Just drop your .au file and get .wma in seconds.
Batch Settings
Precisa converter seus arquivos de áudio AU para o formato WMA? Seja para otimizar o espaço no seu celular, garantir a compatibilidade com sistemas mais antigos ou simplesmente organizar sua biblioteca de áudio com mais eficiência, estamos aqui para ajudar. O formato AU, embora robusto e de alta qualidade, nem sempre é o mais prático para o uso diário ou para partilhar. Já o WMA, amplamente reconhecido e com boa compressão, oferece uma excelente alternativa para diversas situações, mantendo uma qualidade sonora satisfatória. Com a nossa ferramenta, você transforma seus arquivos de forma rápida e segura, sem complicações. Desfrute de uma experiência de conversão descomplicada e tenha seus áudios prontos para qualquer plataforma ou dispositivo.
- Áudios para apps bancários
- Podcasts mobile
- Produção de conteúdo digital
Em Portugal e no Brasil, a transição de formatos de áudio menos comuns como AU para WMA pode ser útil para garantir a reprodução em dispositivos mais antigos ou em plataformas que ainda não suportam nativamente formatos mais recentes.
About AU to WMA Conversion
AU and WMA (introduced 1999) are both audio formats, but they differ in important ways. AU is a widely used file format. WMA (Windows Media Audio) is Microsoft's audio codec — less common today but still found in legacy collections.
When you convert AU to WMA, the goal is to convert between formats quickly. Converting AU to WMA maintains high quality with CocoConvert's optimised encoder settings. Understanding these technical differences helps you choose the right format for your workflow.
Your AU file is decoded and re-encoded as WMA. The conversion involves 4 steps: (1) your au file is uploaded and validated, (2) the file is decoded (parsed into its raw data), (3) the data is re-encoded in wma format, (4) the converted file is ready for download.
CocoConvert's converter handles the entire pipeline server-side using FFmpeg, Sharp, and qpdf — battle-tested libraries used by streaming platforms and enterprise tools. Files are encrypted in transit and deleted within 24 hours.
This conversion is ideal when you When you need a WMA file. For the opposite direction, CocoConvert also supports WMA to AU conversion.
How to Convert AU to WMA
- 1
Upload .au file
Select your AU file by dragging it to the upload zone or using the file picker. Batch upload is available for multiple files.
- 2
Choose .wma
Set WMA as the output format. The converter uses optimal settings based on the AU→WMA conversion profile.
- 3
Convert
The server-side engine decodes your AU file and re-encodes it as WMA. Processing time depends on file size and complexity.
- 4
Download result
Grab your converted .wma file. Multiple output files can be downloaded together.
What Happens When You Convert AU to WMA
Your AU file is decoded and re-encoded as WMA.
Your AU file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in WMA format
The converted file is ready for download
Format Comparison
AU
.au file
| Extension | .au |
| MIME Type | audio/basic |
| Category | Audio |
WMA
.wma file
| Extension | .wma |
| MIME Type | audio/x-ms-wma |
| Category | Audio |
Should You Convert AU to WMA?
When to Convert
- ✓When you need a WMA file
Frequently Asked Questions
What is the difference between AU and WMA?
AU is a widely used file format. WMA (Windows Media Audio) is Microsoft's audio codec — less common today but still found in legacy collections.
Does AU to WMA conversion affect quality?
Converting AU to WMA maintains high quality with CocoConvert's optimised encoder settings.
Which format has better compression, AU or WMA?
AU is a common audio format. WMA uses lossy compression. The better choice depends on whether you prioritize file size or quality.
How long does AU to WMA conversion take?
Most conversions finish in seconds. Larger files or complex audio content may take 10–30 seconds. CocoConvert processes files in parallel for batch jobs.
Is AU or WMA better for long-term storage?
Both formats use lossy compression, so consider keeping your original source file for long-term storage.
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