Whether you are trying to download a new application that requires a modern operating system, troubleshooting a software bug with Apple Support, or preparing to sell your computer, knowing exactly which version of macOS your machine is currently running is essential.
Apple releases a major new version of macOS every year (giving it a name like Sonoma, Ventura, or Monterey) alongside multiple smaller numerical updates throughout the year to patch security holes. Checking both the name and the exact version number of your operating system takes only two clicks from anywhere on your Mac.
How to Find Your macOS Version
The information is permanently located in the same place, regardless of how old your Mac is or what apps you currently have open.
- Look at the very top-left corner of your screen and click on the Apple Logo.
- From the drop-down menu, select the first option: About This Mac.
A small window will appear in the centre of your screen displaying your computer’s vital statistics.
Understanding the Information
- The Name: At the very top of the window, written in large, bold text, you will see the commercial name of the operating system (e.g., macOS Sonoma).
- The Version Number: Directly beneath the name, written in smaller text, you will see the exact numerical version (e.g., Version 14.2.1). The first number represents the major release year, and the subsequent numbers represent smaller security and bug fix updates.
This screen also contains other highly useful identification details, such as the specific model and year of your Mac (e.g., “MacBook Air, M2, 2022”) and your hardware Serial Number, which you will need if you ever claim a warranty repair.
How to Check if You Are Up to Date
If you check your version and realise you are running older software, you should check Apple’s servers to see if a free upgrade is available for your machine.
- Click the Apple Logo in the top-left corner.
- Select System Settings (or System Preferences on older Macs).
- In the left sidebar, click on General.
- In the main panel, click on Software Update.
Your Mac will briefly connect to the internet to check Apple’s servers. If an update is available, it will display the new version number and offer an “Update Now” or “Upgrade Now” button. If your Mac is fully patched, it will display a message stating “Your Mac is up to date.”