Why won't my WMA files play on my phone or car stereo?

WMA is a Microsoft-specific format. Apple devices don't support it natively, and many car stereos and portable players dropped WMA support years ago. Converting to MP3 gives you a format that plays everywhere.

Does converting WMA to MP3 reduce quality?

Some quality is lost because WMA is already a lossy format and MP3 is also lossy. Converting at 192 kbps or higher keeps the loss small enough that most people won't notice on typical speakers or headphones.

Are my files uploaded to a server?

No. All conversion runs in your browser using WebAssembly. Your files stay on your device.

Yes, completely free with no account required.

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WMA to MP3 Converter Online Free

Convert WMA (Windows Media Audio) files to MP3 for playback on any device. WMA was the default format in Windows Media Player and Zune during the 2000s, leaving many people with large WMA libraries that won't play on modern phones, cars, or streaming apps. Converting to MP3 restores compatibility.