Convert WMA to AAC.
Turn old Windows Media Audio files into AAC, the format Apple devices and most modern apps prefer.
Move a WMA library forward
Apple Music, iPhones and many modern players cannot open WMA. AAC is natively supported across Apple devices, Android and the web.
Raw AAC has no tags
A .aac file carries no title, artist or cover art. If tags matter to your library, WMA to MP3 keeps the title and artist.
Size change
The AAC is usually similar in size to the WMA.
How it works
- 01
Upload your WMA
Drop a file or pick one from your device. Private by default.
- 02
Encode with ffmpeg
ffmpeg decodes the WMA and encodes AAC at about 128 kbps for stereo.
- 03
Download
Grab your AAC.
About 128 kbps AAC for stereo
Keeps the original sample rate
Private uploads, auto-deleted after 1 hour
No watermark, no signup to try
Open-source ffmpeg engine
WMA to AAC: re-encoded
AAC is a compressed, lossy audio format, so this re-encodes the sound and the file gets smaller. Every lossy re-encode sheds a little quality, so convert from the best source you have rather than chaining conversions.
Need more than a conversion?
Send your audio or video to TranscriptAI to generate a transcript, summary, structured notes, flashcards, quiz questions or action items: automatically.
Common questions
Is it free?+
Yes. Convert WMA to AAC free. No signup and no watermark. Free covers 10 server conversions a day, up to 100 MB a file. Pro removes the daily limit and raises the file limit to 2 GB.
Is my file private?+
Your file is uploaded to a private bucket, converted on our own engine, and auto-deleted after 1 hour. It is never sent to a third-party converter.
Can it convert protected WMA files?+
No. WMA files with DRM from old download stores cannot be converted. Unprotected files, including CDs ripped in Windows Media Player, convert normally.
Will it sound worse?+
Both formats are lossy, so a second round of compression removes a little more detail. At about 128 kbps the difference is hard to hear for everyday listening. For no further loss, use WMA to WAV.
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