How to Convert AAC to WMA
Converting AAC to WMA requires decoding AAC audio and re-encoding with Microsoft's WMA codec. Upload your AAC file to start the transcoding process. The converter handles conversion between these two lossy formats automatically. Processing completes within seconds for standard audio files.
The resulting WMA file is comparable in size to the original AAC: The converter encodes WMA (version 2) at a constant 192 kbps; there is no bitrate setting. WMA files integrate with Windows Media Player and Explorer metadata display. A raw .aac file has no tags to carry over; from M4A, title, artist and album are written to the WMA tags, but cover art is not.
Why Convert AAC to WMA
The primary reason for AAC to WMA conversion is Windows ecosystem compatibility: Windows Media Player and Xbox consoles provide native WMA support, and WMA integrates deeply into the operating system. Modern Windows plays AAC too, so convert when a specific player, device or workflow asks for WMA.
Organizations using Microsoft infrastructure often standardize on WMA. Windows Server and SharePoint optimize for WMA format. Converting AAC to WMA simplifies corporate system integration. This ensures reliable playback across Windows environments. Older Windows Phone devices also have more robust WMA support.
Audio Quality Considerations
Converting AAC to WMA involves lossy-to-lossy transcoding: the audio is compressed twice, with cumulative quality degradation, because AAC and WMA use different compression algorithms. The converter encodes WMA (version 2) at a constant 192 kbps; there is no bitrate setting. In our test a 3-minute 256 kbps AAC track (5.89 MB) became a 6.21 MB WMA, 5% larger. Keep the original AAC if you may need it again.
WMA Pro and WMA Lossless exist as higher-quality variants, but this converter writes standard WMA (version 2) at 192 kbps, which provides good results for typical listening. For critical listening, start from a lossless source instead of transcoding; for everyday Windows playback, WMA from AAC produces acceptable results.
Common Use Cases
- Windows Media Player libraries: Converting AAC music collections to WMA for optimal integration with Windows Media Player and native Windows metadata features
- Xbox console playback: Preparing audio files in WMA format for background music on Xbox 360 and Xbox One consoles that prioritize WMA support
- Corporate Windows environments: Converting AAC audio files to WMA for distribution via SharePoint, Windows Server, or enterprise content management systems
- Windows Mobile devices: Ensuring compatibility with older Windows Phone and Windows Mobile devices that have better WMA support than AAC
- Media Center applications: Converting audio for use with Windows Media Center setups that optimize for WMA format integration
Format Comparison: AAC vs WMA
AAC (Advanced Audio Coding) is an MPEG standard lossy format that dominates the Apple ecosystem and streaming services. AAC compresses efficiently and preserves high frequencies well for music distribution, with universal support on iOS, Android and modern players.
WMA (Windows Media Audio) is Microsoft's proprietary lossy format, optimized for Windows ecosystem integration and generally considered to need somewhat higher bitrates than AAC for the same quality. The format as such offers voice-optimized and variable-bitrate modes; this converter writes standard WMA at a constant 192 kbps. It remains preferred in Windows-centric environments.