Convert Advanced Audio Coding (.aac) to Windows Media Audio (.wma) online for free. Fast, secure audio conversion with no watermarks or registration.
Conversion settings — add a file to adjust
Upload your .aac file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .wma file when it's ready.
AAC is the audio standard championed by Apple and MPEG, while WMA (Windows Media Audio) is Microsoft's competing codec introduced in 1999 as part of Windows Media. WMA was deeply integrated into Windows Media Player, Zune, and the Microsoft ecosystem throughout the 2000s. Converting AAC to WMA is necessary when targeting legacy Windows environments, Zune devices, or enterprise media systems built on Windows Media technology.
Some enterprise environments still run Windows Media-based infrastructure — corporate streaming servers (Windows Media Services), legacy digital signage, and older car head units with Zune/WMA support but no AAC decoder. WMA also supports DRM (Windows Media DRM) which was widely used for purchased music from Microsoft's Zune Marketplace and other Windows-based stores.
FFmpeg decodes the AAC stream and re-encodes using the WMA codec (wmav2 for WMA Standard, or wmalossless for WMA Lossless). WMA Standard supports bitrates from 32 to 320 kbps. The output uses the ASF (Advanced Systems Format) container with a .wma extension. WMA Pro supports multichannel audio up to 7.1 and 24-bit 96 kHz resolution.
At equivalent bitrates, AAC generally outperforms WMA in listening tests. WMA at 192 kbps is roughly comparable to AAC at 160 kbps. Since this is a lossy-to-lossy transcode, encoding at a higher WMA bitrate (192+ kbps) is recommended to minimize perceptible quality loss.
| Device | AAC | WMA |
|---|---|---|
| Windows PC | Partial | Native |
| macOS | Native | Partial |
| iPhone/iPad | Native | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: N/A
Bitrate: 320 kbps
OGG Vorbis preferred
Resolution: N/A
Bitrate: 256 kbps
AAC format required
Resolution: N/A
Bitrate: 128 kbps
Lossless FLAC/WAV for best quality
Resolution: N/A
Bitrate: 128 kbps
MP3 mono for spoken word
AAC to WMA bridges the Apple ecosystem with legacy Microsoft infrastructure. Use WMA at 192+ kbps for acceptable quality, and prefer WMA Pro or WMA Lossless for critical listening scenarios.
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Конфиденциальность прежде всего
Файлы автоматически удаляются после обработки
Без регистрации
Начните конвертировать мгновенно
Работает везде
Любой браузер, любое устройство
| No |
| Характеристика | AAC | WMA |
|---|---|---|
| Полное название | Advanced Audio Coding | Windows Media Audio |
| Расширение | .aac | .wma |
| Лучше всего подходит для | Superior to MP3 | Windows native |