Convert WMA to MP3
WMA is a Windows Media format that has been quietly dying since about 2010. Most things made this decade will not open one.
Audio only · up to 10 files · 100 MB each — those numbers protect your memory, not our server
Getting the converter ready — this happens once, then your browser keeps it.
The converter could not start.
The engine files are missing from — copy ffmpeg-core.js and ffmpeg-core.wasm there.
Almost always a mismatched build: the worker is an ES module, so the core has to be the esm one too. Copy ffmpeg-core.js and .wasm from @ffmpeg/core/dist/esm/, not dist/umd/.
not in this build of the converter, so it is not offered.
What you lose
A generation of lossy compression. WMA files are often old and were often encoded at low bitrates, so the source may be the limiting factor rather than the conversion.
What you do not gain
Nothing beyond being playable again. An old 96 kbps WMA becomes an equally thin MP3.
What it does to the size
Approximate, for stereo audio at the settings this tool uses by default. The real figure moves with the material — silence and speech compress far better than a full mix.
When this is the right conversion
Rescuing an old library. This is a conversion people do once, to a whole folder, and never think about again.
Other conversions
This tool is free because dbelo is a library of sound effects, and we would rather you found us this way than not at all.
Browse the sound library