Convert WMA to FLAC — Free Online Converter
Convert Windows Media Audio (.wma) to Free Lossless Audio Codec (.flac) online for free. Fast, secure audio conversion with no watermarks or registrat...
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Upload your .wma 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 .flac file when it's ready.
About WMA to FLAC Conversion
WMA encompasses three codec variants: WMA Standard (lossy, 32-320 kbps), WMA Pro (multichannel lossy), and WMA Lossless (bit-perfect compression). FLAC (Free Lossless Audio Codec) is the universal open-source lossless audio standard, supported natively on Android, Linux, Windows 10+, and most music streaming platforms. FLAC achieves 50-60% compression compared to raw PCM.
Converting WMA to FLAC moves your audio from Microsoft's proprietary ecosystem to the most widely supported open lossless format. For WMA Lossless sources, this is a perfect lossless-to-lossless transfer. For WMA Standard sources, FLAC preserves the decoded audio at its current quality level.
Why Convert WMA to FLAC?
FLAC is the industry standard for lossless music distribution and archiving. Bandcamp, Tidal, Qobuz, Amazon Music HD, and Deezer HiFi all use FLAC. Converting WMA to FLAC future-proofs your music library in an open, patent-free format that will be supported indefinitely.
FLAC's metadata capabilities far exceed WMA's. Vorbis comment tags support virtually unlimited custom fields, embedded album art, ReplayGain values, and cue sheets. For music collectors migrating from Windows Media Player, FLAC provides a superior organizational framework.
Common Use Cases
- Migrating a WMA music library to the universal lossless FLAC standard
- Converting WMA Lossless collections to an open-source lossless format
- Preparing audio for lossless music distribution on Bandcamp or similar platforms
- Archiving WMA recordings in an open format immune to proprietary format abandonment
- Building a FLAC music server library for Plex, Roon, or Jellyfin
How It Works
FFmpeg demuxes the ASF container, decodes the WMA audio (Standard, Pro, or Lossless) to PCM, and encodes using the FLAC encoder. FLAC compression levels 0-8 trade encoding speed for file size without affecting quality. The encoder uses linear prediction and Rice coding to achieve lossless compression. The output preserves the source sample rate, bit depth, and channel layout. An MD5 checksum of the decoded audio is stored in the FLAC header for integrity verification.
Quality & Performance
FLAC encoding is mathematically lossless. For WMA Lossless sources, the entire conversion is end-to-end lossless — the FLAC output is bit-for-bit equivalent to the original pre-compression audio. For WMA Standard sources, FLAC perfectly preserves the decoded lossy audio at whatever quality WMA retained. No additional quality loss occurs during FLAC encoding.
Device Compatibility
| Device | WMA | FLAC |
|---|---|---|
| Windows PC | Native | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Native |
| Linux | Partial | Native |
| Web Browser | No | No |
Recommended Settings by Platform
Spotify
Resolution: N/A
Bitrate: 320 kbps
OGG Vorbis preferred
Apple Music
Resolution: N/A
Bitrate: 256 kbps
AAC format required
SoundCloud
Resolution: N/A
Bitrate: 128 kbps
Lossless FLAC/WAV for best quality
Podcast
Resolution: N/A
Bitrate: 128 kbps
MP3 mono for spoken word
Tips for Best Results
- 1Prioritize WMA Lossless files for conversion — they produce bit-perfect FLAC output with zero quality compromise
- 2Use FLAC compression level 5 for optimal speed/size balance — all levels produce identical audio quality
- 3Add ReplayGain tags during conversion for normalized playback volume across your library
- 4Embed album art in FLAC rather than relying on folder.jpg — this ensures artwork displays everywhere
- 5Verify the conversion of WMA Lossless sources by comparing MD5 checksums of the decoded PCM
Related Conversions
WMA to FLAC migration moves your audio to the universal open lossless standard. WMA Lossless sources convert with zero quality loss, while WMA Standard sources are preserved at their full decoded fidelity.