MP3 to WMA Converter
Convert MP3 to WMA free — no upload, no signup
To convert MP3 to WMA, drop your MP3 audio files into the box below and click Convert. Fylo converts with ffmpeg running inside your browser, so nothing is uploaded and there's no signup or watermark. WMA plays natively in Windows Media Player.
Drop audio files here
or tap to browse · paste with Ctrl+V · add many at once
Your files never leave your device
Advanced
How to convert MP3 to WMA
Add your MP3 files
Drag and drop MP3 files into the box or tap to choose them. The converter engine (about 31 MB) downloads once, the first time you convert.
Pick a bitrate
192 kbps suits music and 128 kbps or less suits speech. Sample rate and mono/stereo are under Advanced.
Convert and download
Click Convert, then download each WMA file or all of them as one ZIP.
Why convert MP3 to WMA?
Old Windows setups and some car stereos from the 2000s prefer WMA.
What happens when you convert MP3 to WMA?
The MP3 is re-encoded to WMA2 at 192 kbps.
How does Fylo convert MP3 to WMA?
Fylo decodes the MP3 audio in the MP3 with ffmpeg compiled to WebAssembly and encodes it with Windows Media Audio 2 (wmav2) at 192 kbps in an ASF container. Both formats are lossy, so each conversion discards a little detail — start from the highest-bitrate MP3 you have. A 3-minute song is ≈ 4.3 MB at 192 kbps as MP3 and ≈ 3.6 MB at 160 kbps as WMA. The original sample rate and channel layout are kept unless you change them under Advanced.
What's the difference between MP3 and WMA?
MP3 (MPEG-1 Audio Layer III) was developed largely at Germany's Fraunhofer Institute and standardised in 1993. It removes sounds the ear is unlikely to notice — a technique called perceptual coding — so a 3-minute song takes about 4 MB at 192 kbps instead of about 32 MB as WAV. The last MP3 patents expired in 2017, so it's now free to use.
WMA (Windows Media Audio) was released by Microsoft in 1999 to compete with MP3 and is stored in the ASF container. Windows Media Player ripped CDs to WMA by default for years, so many older music collections are WMA.
Learn more: MP3 format guide · WMA format guide
| Property | MP3 | WMA |
|---|---|---|
| Compression | Lossy | Lossy (also Pro/Lossless variants) |
| Typical bitrate | 128–320 kbps | 64–192 kbps |
| 3-minute song | ≈ 4.3 MB at 192 kbps | ≈ 3.6 MB at 160 kbps |
| Tags and cover art | Yes (ID3) | Yes |
| Compatibility | Universal | Windows; poor on Mac, iPhone and browsers |
| Best for | Music and podcasts on any device | Old Windows Media Player libraries |
| Introduced | 1993 | 1999 |
Frequently asked questions
Will WMA play on a Mac?
Not without extra software. Keep MP3 for Macs and iPhones.
Is WMA smaller than MP3?
About the same at the same bitrate.
Is my MP3 file uploaded to a server?
No. Fylo runs ffmpeg, the same engine used by professional video tools, compiled to WebAssembly inside your browser. Your MP3 file is read directly from your device and never sent anywhere.
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