Convert WMA to MP3 Online — No Upload, No Watermark
WMA is Microsoft’s Windows Media Audio format — unsupported on macOS, iOS, and most modern players. Converting to MP3 gives you a small, universal audio file that every player, podcast host, and editor accepts without extra codecs.
Drop audio file here
Max file size: ~2 GB (memory permitting)
Where WMA files come from
WMA is Windows Media Audio, the default of Windows Media Player rips throughout the 2000s. Surviving files are almost always a CD collection ripped on a Windows machine a long time ago.
What changes when you convert WMA to MP3
| Encoding | WMA decoded and re-encoded to MP3 at LAME V2 |
|---|---|
| Compatibility | Plays on Apple devices and in browsers, neither of which support WMA |
Worth knowing first
Files bought from the old Windows Media stores carry DRM and will not convert, since the licence is required to decode them. Your own CD rips have no protection and convert without trouble.
FAQ
Why will my iPhone not play WMA?
Apple never implemented Microsoft's audio format, and no app on iOS adds system-wide support. Converting is the only realistic route for an old Windows Media library.
Some of my files fail. What is different about them?
They almost certainly carry DRM from a Windows Media store purchase or subscription. Protected files cannot be decoded without their licence, which stayed on the original machine. Rips you made yourself are unprotected.
Is WMA Lossless handled?
Yes, it decodes and converts, but you are turning a lossless file into a lossy one. If the WMA Lossless files are your masters, convert copies and keep the originals.
Is this WMA to MP3 converter free, with no upload?
Yes. Conversion happens locally in your browser via FFmpeg WebAssembly — your audio never uploads. No signup and no watermark. Length is limited only by the memory your browser gives this tab, which is far smaller on a phone than on a computer.