Convert mp3 to wma
Converted on your device. Files never leave this tab. Output tops out around 2 GB.
Nothing is uploaded
The converter runs inside this page. Cut your network after it loads and it still works.
No account, no daily limit
No sign-up, no daily limit, no watermark, no queue behind other people's files. Batch as many MP3 files as you like.
Real WMA output
Encoded by ffmpeg, the same library the command-line tools use — not a renamed extension.
About MP3
MPEG-1 Audio Layer III
A lossy audio format developed largely at the Fraunhofer Institute and standardized as part of MPEG-1 in 1993. Its patents expired in 2017, and typical bitrates run from 128 to 320 kbps. Use it when audio has to play everywhere: car stereos, old MP3 players, any phone or browser.
About WMA
Windows Media Audio
Microsoft's audio codec family, introduced in 1999 and stored in an ASF container, with lossy, lossless and voice variants. Convert from WMA to play old Windows Media files on phones, Macs and players that never supported it.