Find out which macOS your Mac is using

Use About This Mac to check the version of Mac operating system (macOS) installed on your Mac. Then find out whether it's the latest (newest, most recent) version.

Which macOS is installed?

From the Apple menu  in the upper-left corner of your screen, choose About This Mac. The window that opens might look different from the example shown here, but it always includes the macOS name followed by its version number. If you need to know the build number as well, click the version number to see it.

This example shows About This Mac on a Mac mini with macOS Sonoma 14.0:

About This Mac window

Which macOS versions are the latest?

As updates that change a macOS version number become available, this table is updated to show the latest version of that macOS. If a later version is compatible with your Mac, you can get it by updating macOS on your Mac.

Learn how to update macOS on your Mac

macOS Latest version
macOS Sonoma 14.1.2
macOS Ventura
macOS Monterey
macOS Big Sur
macOS Catalina
macOS Mojave 10.14.6
macOS High Sierra 10.13.6
macOS Sierra 10.12.6
OS X El Capitan 10.11.6
OS X Yosemite 10.10.5
OS X Mavericks 10.9.5
OS X Mountain Lion 10.8.5
OS X Lion 10.7.5
Mac OS X Snow Leopard 10.6.8
Mac OS X Leopard 10.5.8
Mac OS X Tiger 10.4.11
Mac OS X Panther 10.3.9
Mac OS X Jaguar 10.2.8
Mac OS X Puma 10.1.5
Mac OS X Cheetah 10.0.4
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