Finding out which macOS version you have

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 has been updated.

Testing.

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

 

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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	13.6.2
macOS Monterey	12.7.1
macOS Big Sur	11.7.10
macOS Catalina	10.15.7
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