To convert WMA to AAC, select or drop your .wma file above, check that AAC is chosen as the output, and click Convert. This conversion runs on our server, and your files are deleted 72 hours later.
What is a WMA file?
WMA – Windows Media Audio. WMA is Microsoft's audio format, once the default of Windows Media Player and many portable players. Converting makes a new file: the sound is decoded and written again, so converting from a lossy format never brings back what was lost.
WMA Converter →What is an AAC file?
AAC – AAC audio. AAC is the successor of MP3: it sounds better at the same size. A bare .aac file is a stream of AAC frames; the usual home of AAC is the M4A file. Converting makes a new file: the sound is decoded and written again, so converting from a lossy format never brings back what was lost.
AAC Converter →How to convert WMA to AAC
- Click Select File, or drop your .wma files anywhere on this page. You can add several at once.
- Check that AAC is chosen as the output format. On this page it is picked for you.
- Click Convert. When a file has to go to our server, the button says Upload and convert instead.
- Click Download next to each file when it's done.
WMA vs AAC: how they compare
| WMA | AAC | |
|---|---|---|
| Layout | A stream of sound | A stream of sound |
| Editable | In audio editors | In audio editors |
| Created by | Microsoft, 1999 | MPEG, 1997 |
| Best for | Old Windows and portable players | Music on phones and streaming |
Good to know
- The sound is decoded and written as an AAC file at a fixed quality (192 kbit/s).
- Both are lossy, so converting costs a little quality each time: keep the original and convert from it when you can.
- Tags such as title and artist are kept where the new format has room for them. Only the first audio track is converted; pictures and video are left out.
Frequently asked questions
Is converting WMA to AAC free?
Yes. Everyone gets 25 free credits a day, with no account needed. Conversions on our server use one credit per started minute of work, so most cost a single credit. Credits reset at midnight UTC.
Are my WMA files uploaded anywhere?
This conversion runs on our server, because converting audio needs ffmpeg, which does not run in a browser. Your file is sent over an encrypted connection, and both it and the result are deleted 72 hours after the conversion. The server has no internet access while it works on your file.
How large can the WMA file be?
Up to 1 GB per file. This conversion runs on our server, which accepts files up to that size.
Will the AAC look the same as the WMA?
It sounds very close: the sound is encoded again as AAC at a fixed quality, so a little detail is lost, and tags such as title and artist are kept where AAC has room for them.
Can I convert several WMA files at once?
Yes. Add as many files as you like; they are converted one after another, and each one gets its own Download button.
How long does converting WMA to AAC take?
In our tests a one-hour WAV recording became an M4A file in about 46 seconds. A song of a few minutes takes a few seconds, and most conversions cost a single credit.
Convert WMA to other formats
- WMA Converter
- WMA to AIFF Converter
- WMA to FLAC Converter
- WMA to M4A Converter
- WMA to MP3 Converter
- WMA to WAV Converter
Convert other files to AAC
- Convert to AAC
- MP4 to AAC Converter
- MOV to AAC Converter
- MKV to AAC Converter
- AVI to AAC Converter
- WEBM to AAC Converter
- WMV to AAC Converter
- FLV to AAC Converter
- MP3 to AAC Converter
- WAV to AAC Converter
- M4A to AAC Converter
All audio formats
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