WMA to MP3 Converter — Free, Online, No Upload

WMA (Windows Media Audio) was Microsoft's default audio format from 1999 through the Windows 7 and Windows 8 era. Windows Media Player used it for ripping CDs, Windows Movie Maker exported audio as WMA, and the Microsoft Store sold WMA music. If you have WMA files today, they almost certainly came from one of those sources.

The compatibility problem is severe: iOS doesn't support WMA at all — the iPhone's Music app can't play or import WMA files. macOS requires VLC or another third-party app to open WMA; QuickTime and the Finder both reject them. Spotify, Apple Music, Google Play Music, and every major streaming platform refuse WMA uploads. Car stereos with USB playback typically don't support WMA. Bluetooth speakers can't play WMA. Even Windows 11 no longer ships with Windows Media Player by default.

Converting WMA to MP3 gives you a file that plays on every phone, computer, smart speaker, car stereo, and streaming platform on earth. MP3 is the most universally-supported audio format that exists.

Converting WMA to MP3 involves re-encoding — the audio data must be decoded from WMA's proprietary codec and re-compressed as MP3. Our converter uses 192 kbps output, which preserves full WMA quality for standard music files. There is no meaningful audible difference between a 192 kbps MP3 and the original WMA for typical listening scenarios. If the original WMA was low-quality (64–96 kbps), the output MP3 will reflect that original quality ceiling.

Note: if your WMA file was purchased with Microsoft's DRM (Digital Rights Management), the converter may not be able to decode it — DRM-protected files require Microsoft account authentication and can't be processed in the browser. DRM was typically applied to music purchased from the old Zune Marketplace or Microsoft Store.

Typical sizes (3-minute song): WMA 2–4 MB → MP3 3–5 MB.

MP3 output is encoded at 192 kbps.

Re-encoding one lossy format into another adds a second round of compression.