WMA to FLAC Converter

Convert legacy WMA files into FLAC — the open lossless container that won't disappear with Microsoft's next strategy pivot. Future-proof your old Windows Media library.

WMAFLAC

Drop your WMA file here or click to browse

WMA (.wma) · Max 20 MB

Free — 10-second preview, 5 conversions/month. Upgrade for unlimited

What is WMA?

Windows Media Audio. Microsoft's format. Common on older Windows systems and devices.

What is FLAC?

Lossless compression. Perfect quality at roughly half the size of WAV. The choice for audiophiles and archiving.

Why Convert WMA to FLAC?

Migrating from WMA to FLAC is mostly about future-proofing. WMA is a Microsoft format with declining support: Windows 11 still plays it, but iPhone, Mac, Android, smart speakers, and modern car systems mostly don't. Worse, Microsoft has gradually de-emphasised WMA across their own products over the last decade. FLAC, by contrast, is open-source, royalty-free, and supported by every audiophile player, DAW, and modern playback ecosystem (iOS 11+, Android 3.1+, all modern OSes). If you have a WMA library — perhaps from old Zune ripping or Windows Media Player — converting to FLAC archives it in a format you'll still be able to play in 20 years. Quality note: standard WMA is lossy, so converting to FLAC doesn't restore quality, just freezes what you have in a stable lossless container. The FLAC will be 5–8× larger than the source WMA but won't degrade further with age, format obsolescence, or future re-encoding. WMA Lossless source files convert to FLAC bit-perfectly (both lossless), making this a true lossless-to-lossless workflow for that specific subset.

Who Uses This Converter

Future-proof archival

WMA's long-term support is uncertain. FLAC is open and stable. Convert your library once and never worry about format obsolescence.

WMA Lossless preservation

If you have rare WMA Lossless rips, FLAC preserves them bit-perfectly while moving to a more universally supported container.

Audiophile workflow

FLAC is the audiophile standard. Convert your old Windows-era library to FLAC for modern hi-fi players, network audio systems, and DAW import.

Frequently Asked Questions

Will the FLAC sound better than the WMA?

No. FLAC's lossless compression is applied to whatever the WMA decoder outputs. If the WMA is lossy (most are), the audio is whatever the WMA encoded — FLAC just stores it without further loss. WMA Lossless source files become bit-perfect FLACs (the audio data is identical, just in a different container).

How much larger will the FLAC be?

Typically 5–8× the WMA size at common bitrates. A 5 MB WMA at 128 kbps becomes a 25–40 MB FLAC. The larger size reflects FLAC storing the full decoded waveform, while WMA discarded data the encoder thought you wouldn't hear.

What about WMA Lossless?

If your file is WMA Lossless (check in Windows Media Player → File → Properties → File tab, look for 'Windows Media Audio 9 Lossless'), the FLAC output is bit-perfect. Sample for sample identical to the source. This is the ideal use case for WMA → FLAC conversion.

Why not convert to MP3 instead?

MP3 is lossy — converting WMA → MP3 stacks two lossy passes and degrades quality. MP3 is fine for casual listening but not for archiving. FLAC freezes whatever quality the WMA had without further loss, making it the right archive choice.

Will tags transfer?

Basic tags (title, artist, album, year, track number) transfer to FLAC's Vorbis comments. WMA's extended Microsoft-specific metadata may not map. Album art usually transfers. Verify with a tag editor after batch conversion.

What about DRM?

DRM-protected WMA (from old MSN Music, Zune Pass, etc.) cannot be converted in a browser. Conversion attempts will fail or produce silence. To free DRM-locked WMA, you'd need to play it through licensed software while recording the output — not something we support.