WMA to M4A Converter

Turn Windows Media audio into M4A that fits straight into Apple Music and iTunes. Free, in your browser, with no signup and no watermark.

Select WMA file →

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EchoWave is used by creators, marketers, educators, and businesses to convert and edit media online.

Updated July 2026

WMA is a Microsoft format Apple devices ignore, while M4A is the AAC audio that iPhone, Mac, and iTunes treat as a first-class citizen. This converter re-encodes your WMA as M4A in your browser, free and with no signup, so a file that would not import into Apple Music becomes one that slots right in, usually at a smaller size than MP3 for the same quality.

Free, no sign-upNo account, no trial

Runs in your browserNothing to install

Works on every devicePhone, tablet, laptop

No watermarkClean output, every time

How it works

How to convert WMA to M4A

1
Upload your WMA
Drag your WMA onto the converter or pick it from your device. Nothing to install.
2
Choose M4A and convert
Select M4A as the output, set the bitrate if it applies, then start. Free, with no sign-up.
3
Download your M4A
Save the finished M4A, or open it in the editor to trim or adjust it first.

Try it

Estimate your M4A

Pick a bitrate and a length to see the M4A file size before you convert.

Bitrate

Length10 min

1 min60 min

Estimated M4A size14MBGreat for most music

An estimate. Real size varies a little with the encoder and the audio itself.

The formats

WMA vs M4A

WMA

Windows Media Audio

Windows Media audio, a Microsoft format

Type: Lossy audio format
Holds: Windows Media Audio, audio only
Typical size: Small, built for Windows
Plays on: Windows Media Player and VLC

Best for:Older Windows audio libraries

M4A

MPEG-4 Audio

Apple-friendly AAC audio

Type: Lossy audio, usually AAC
Holds: AAC audio in an MP4 container
Typical size: Small, smaller than MP3 at the same quality
Plays on: iPhone, Mac, iTunes, and most players

Best for:Apple devices and clean compressed audio

Will it lose quality?

Converting a lossy file to a lossless one cannot restore detail that was already discarded. It only makes a larger file.
Going from a high-quality source to M4A keeps the sound clear while changing the format.
Each pass between two lossy formats loses a little, so always convert from the best source you have.

Use cases

What people use it for

Music librariesStandardise your collection

ListenersUse a format your player likes

PodcastersMatch your host requirements

EditorsImport audio your tool accepts

DevicesPlay on phones and car stereos

Troubleshooting

If something looks off

The M4A is larger than I expected

Lossless and uncompressed formats are big by design. If you want a smaller file, pick a lossy format and a bitrate around 192 to 256 kbps.

The song details are missing

Title, artist, and album travel as tags when the source has them. If they are blank, add them in any music app after converting.

My app will not open the M4A

Most apps open common audio, but a few are picky. VLC plays almost anything, or convert to MP3 for the widest support.

FAQ

WMA to M4A questions

Why convert WMA to M4A for Apple devices?

iTunes, Apple Music, iPhone, and Mac were built around AAC, which is what an M4A holds, and they often will not import a WMA at all. Converting to M4A gives you a file those apps add to your library and sync without complaint.

Once I convert WMA to M4A, is the M4A the same as AAC?

Close. M4A is an MP4 container that almost always carries AAC audio, so people use the names loosely. EchoWave outputs AAC inside the M4A, which is the version every Apple app and most other players expect.

Will converting WMA to M4A lose quality?

WMA and AAC are both lossy, so this is a lossy-to-lossy step and each pass discards a little. The M4A can only be as good as the WMA you start from, so use a high bitrate and convert from the best WMA you have to keep the result close to the original.

Is the M4A from a WMA smaller than an MP3?

Usually yes. AAC, the codec inside an M4A, is more efficient than MP3, so at the same perceived quality the M4A is typically a little smaller. That makes it a good fit for phones where storage and sync size matter.

Is the WMA to M4A converter free?

Yes. EchoWave converts WMA to M4A with no signup, no file-count limit, no trial, and no watermark. Upload your file, convert it, and download the M4A from your browser.

Does it work on iPhone, Mac, Windows, and Android?

Yes. The converter runs in any browser, so it works on iPhone, iPad, Mac, Windows, Android, Chromebook, and Linux with nothing to install. You can convert a stubborn WMA right on the iPhone you want to play it on.

Will the title and artist details carry over?

Title, artist, and album move across as tags when your WMA includes them. If a field comes through blank, you can edit it in the Apple Music app, iTunes, or any tagging tool after converting.

What can I do with the M4A afterward?

Sync it to your Apple devices, drop it in a playlist, or open it in the editor to trim it or turn the track into a shareable video clip.