How to Know Which Version of Mac OS X You Have

Knowing what software you're running on your computer is necessary for many different things, such as purchasing the correct software for your computer, updating your software, etc. This article explains how to find out exactly what version of Mac OS X you have on your computer.

Steps

1. In the menu bar, click on the Apple logo.
2. Select About This Mac. A window will appear.
3. Your version of OS X will be displayed below the letters OS X.
4. It should say Version 10.**.

Apple uses code names during development as a way to refer to different versions of OS X. Those code names has become a popular way to refer to a version of OS X. Below is a list of all the current versions of OS X, and their associated names.

10.0   Cheetah

10.1   Puma

10.2   Jaguar

10.3   Panther

10.4   Tiger

10.5   Leopard

10.6   Snow Leopard

10.7   Lion

10.8   Mountain Lion

10.9 Mavericks

10.10 Yosemite (Beta)