Citrus / Convert / MP4 to M4A (AAC)

Convert MP4 to M4A (AAC) on Mac, offline

Need to turn a .mp4 file into M4A (AAC)? Citrus converts MP4 to M4A (AAC) right on your Mac, offline, using Apple's own engines. Nothing is uploaded to any server, which matters for client work, private photos and contracts.

Get Citrus, from $10 up

From $10 and up. For macOS 13+, Apple silicon.

What to expect

How to convert MP4 to M4A (AAC)

  1. Open Citrus from the menu bar (the citrus slice icon).
  2. Drop your .mp4 file, or several, into the window. You can also drag a file onto the menu bar icon to open the quick wheel.
  3. Choose M4A (AAC) as the output format and adjust options if you want, like size, quality or resolution.
  4. Press Convert. Your new files appear next to the originals, and the originals are never changed.

About the formats

MP4: MP4 is the most compatible video format for web, phones, TVs and social media.

M4A (AAC): M4A with AAC is the compact lossy audio format used by iPhone, Apple Music and most devices.

Frequently asked questions

Is my file uploaded anywhere?

No. Citrus runs entirely on your Mac. Files are read and written locally and never sent to a server.

Can I convert many MP4 files at once?

Yes. Drop a whole batch into Citrus and convert them all to M4A (AAC) in one go. Originals are never changed.

Does Citrus need an internet connection to convert MP4 to M4A (AAC)?

No. It works fully offline after you download it.

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