Convert WMA to M4A
Convert any audio file to M4A format online for free. Fast, secure, and easy-to-use audio to M4A converter with no software installation required.
Drag & Drop Audio File
or click below to browse
Max file size: 50 MBMax duration: 30 min
Sign up for increased limitsA free account gets you up to 50 MB and 30 min.
Why Choose Scriptivox WMA to M4A Converter?
Fast Conversion
Our powerful servers process your files quickly, delivering converted files in seconds.
100% Free
Convert your files completely free with no hidden costs or subscription fees.
Secure & Private
Your files are encrypted and automatically deleted after conversion. We never store or share your data.
No Installation
Works directly in your web browser. No software download or installation required.
How to Use WMA → M4A
Upload File
Drag and drop your WMA file or click to browse. Supports files up to 1GB.
Convert
Select M4A as your output format and click convert. Our servers will process your file instantly.
Download
Download your converted file instantly. The download link expires in 1 hour for security.
WMA vs M4A: format comparison
How the two formats differ on the things that change your result.
| Specification | WMA (source) | M4A (result) |
|---|---|---|
| Container | ASF | MPEG-4 Part 14 |
| Developed by | Microsoft | Apple / MPEG |
| Introduced | 1999 | 2003 |
| Audio codecs | WMA, WMA Pro | AAC-LC, HE-AAC, ALAC |
| Compression | Lossy | Depends on codec |
| Typical bitrate | 64–192 kbps | 96–256 kbps |
| Max sample rate | 48 kHz | 96 kHz |
| Max channels | 8 | 8 |
| Gapless playback | No | Yes |
| Metadata / tags | ASF / WM tags | MPEG-4 iTunes-style atoms |
| Approx. file size | 0.48–1.44 MB per minute | 0.72–1.92 MB per minute |
| Licensing | Proprietary | Patent-licensed |
| Plays natively on | Native: Windows · Needs a player: macOS, iOS, Android | Native: Web browsers, Windows, macOS, iOS, Android, Smart TVs |
| Best for | Windows media libraries, legacy archives | the Apple ecosystem, music libraries, audiobooks |
What changes when you convert WMA to M4A
Note that MPEG-4 Part 14 does not imply one specific codec. It can wrap AAC-LC, HE-AAC, ALAC, so the compression behaviour of the result depends on the codec chosen rather than on the extension alone.
This conversion buys reach. M4A is natively supported on 5 additional platforms compared with WMA, which is usually the reason people convert in this direction.
This conversion moves the file toward a different purpose: WMA suits Windows media libraries, legacy archives, whereas M4A is chosen for the Apple ecosystem, music libraries, audiobooks.
Tags do not transfer verbatim. WMA stores them as ASF / WM tags while M4A uses MPEG-4 iTunes-style atoms, so titles and artwork are remapped and unusual custom fields may not survive.
About WMA to M4A Conversion
Converting WMA to M4A means moving audio out of the ASF container, introduced in 1999, and into MPEG-4 Part 14, which arrived in 2003. The two were designed with different priorities, and that is what determines whether this conversion costs you quality, storage, or compatibility.
Developed by Microsoft in 1999, WMA stores audio using WMA, WMA Pro. That codec choice sets the upper bound on what any conversion can preserve.
M4A, from Apple / MPEG and dating to 2003, uses AAC-LC, HE-AAC, ALAC and plays natively on 6 of the six platform categories we track. That combination is usually why people convert into it.
After converting your file, you can use Scriptivox transcription services to convert your audio to text. Perfect for meetings, interviews, podcasts, and more.
WMA to M4A: common questions
Related conversions
Other WMA conversions
Other ways to get M4A
Popular Conversions
Quick access to the most commonly used file conversions
And many more format conversions supported