CloudConverterConvert MP3 to M4A when an app, device or workflow asks for M4A, most often on Apple devices and in iTunes or the Music app.
MP3 vs M4A: what changes
M4A usually holds AAC audio, which is generally more efficient than MP3 at the same bitrate. MP3 plays everywhere, while M4A is native to Apple software and is also supported by most Android phones and Windows players. Since the source is already lossy, converting does not improve quality.
When to convert MP3 to M4A
Use it when software or a device specifically asks for M4A, or when you want your files in the same format as the rest of an Apple library.
Before you convert
Converting MP3 to M4A re-encodes lossy audio, so quality cannot get better and the file may not get smaller. Only convert if you actually need M4A, and keep the original MP3.
Tips for converting MP3 to M4A
If you still have the original recording or a lossless version, convert from that instead of the MP3. This gives the best quality.
Convert MP3 to M4A on any device
Open this page on your iPhone, Android phone or computer, choose the MP3 and download the M4A. On iPhone, pick the file from the Files app. On Windows and Mac, drag it onto the upload box. Uploads can be up to 200 MB.
Frequently asked questions
Is M4A better than MP3?
At the same bitrate M4A usually sounds a little better, but the difference is small, and MP3 is accepted in more places.
Will the M4A be smaller than the MP3?
Not always. It depends on the audio and the settings, so check the result.
Will the M4A play on Android and Windows?
Most modern Android phones and Windows players can play M4A, but older devices may not.
What is the maximum file size?
200 MB per file.
Can I use the M4A in the Music app?
Yes. M4A is a native format for Apple Music and iTunes.
Is it free to convert MP3 to M4A?
Yes. It is free, with no sign-up and no watermark.
Are my files kept after conversion?
No. Uploaded files are processed and deleted after your download. We do not keep a library of your files.
Is there a file size limit?
Uploads are capped at 200 MB per file.