Convert Matroska Video (.mkv) to Windows Media Audio (.wma) online for free. Fast, secure video conversion with no watermarks or registration.
Conversion settings — add a file to adjust
Upload your .mkv 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.
WMA (Windows Media Audio) is Microsoft's proprietary audio codec, deeply integrated into the Windows ecosystem. While largely superseded by AAC and Opus for general use, WMA extraction from MKV is still relevant for users working within Windows Media Center environments, Zune libraries, and legacy Microsoft audio workflows.
Windows Media Player, which remains pre-installed on every Windows PC, treats WMA as a first-class citizen with superior metadata handling, DRM support, and integration with Windows search indexing compared to other formats. For users who manage their entire music library through Windows Media Player, converting audio from MKV to WMA ensures seamless library integration with proper artist, album, and track metadata.
Some enterprise environments still use WMA for internal audio distribution, voicemail systems, and Windows-based kiosk applications. Legacy SharePoint audio libraries, Microsoft Lync/Skype for Business recordings, and Windows Media Services streaming setups expect WMA input. Converting MKV audio to WMA may be required to feed these existing Microsoft infrastructure investments.
FFmpeg decodes the MKV audio and re-encodes using the wmav2 encoder (Windows Media Audio v2), which is the most widely supported WMA variant. WMA supports bitrates from 32 kbps to 384 kbps and sample rates up to 48 kHz. WMA Professional extends this to lossless and multi-channel, but compatibility drops significantly. The output is wrapped in an ASF (Advanced Systems Format) container with the .wma extension.
WMA v2 at 128 kbps is roughly equivalent to MP3 at 128 kbps, which is adequate for speech but shows compression artifacts in complex music. At 192 kbps, WMA v2 becomes transparent for most material. WMA Professional at similar bitrates slightly outperforms standard WMA but has significantly fewer compatible players and devices.
| Device | MKV | WMA |
|---|---|---|
| Windows PC | Partial | Native |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: 1920x1080
Bitrate: 8-12 Mbps
H.264 recommended for fast processing
Resolution: 1080x1080
Bitrate: 3.5 Mbps
Square or 9:16 for Reels
Resolution: 1080x1920
Bitrate: 4 Mbps
9:16 vertical, under 60s ideal
Resolution: 1280x720
Bitrate: 5 Mbps
Under 140s, 512MB max
Resolution: 960x540
Bitrate: 2 Mbps
16MB limit for standard, 64MB for document
Resolution: 1280x720
Bitrate: 4 Mbps
MKV to WMA conversion serves the Windows-centric audio ecosystem and legacy Microsoft infrastructure where WMA remains the expected format.
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Fungerar overallt
| No |
8MB free, 50MB Nitro
Valfri webblasare, valfri enhet
| Funktion | MKV | WMA |
|---|---|---|
| Fullstandigt namn | Matroska Video | Windows Media Audio |
| Filandelse | .mkv | .wma |
| Bast for | Multiple audio tracks | Windows native |