To find which version of macOS is running on your Mac Device (Macbook, iMac or Mac mini) you can try the following options,
1. Using About Option on Menu
- Click on the Apple icon on the menu bar,
- Select About this Mac option,
- You should see details about the installed macOS on your Apple device,

macOS Monterey
Version 12.2
MacBook Air (M1, 2020)
Chip Apple M1
Memory 16 GB
2. Using Terminal command
You can type command sw_vers to find out about your macOS version,

% sw_vers
ProductName: macOS
ProductVersion: 13.0
BuildVersion: 22A5286j
List of all macOS versions (updated June-2022)
macOS Ventura (in Beta) 13.0
macOS Monterey : 12.2.1
macOS Big Sur: 11.6.4
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
Update for macOS 13 Ventura
For the latest version of macOS 13 Ventura, the steps on UI are just the same but the window look and feel has changed a bit, when you click on the macOS name you will see more information like the version eg. 13.0 Beta (22A5286j)

Comments:
- Further comments disabled!
- How to find path of file on Mac Terminal
- How to disable Siri on Mac Monterey
- [fix] macOS Ventura xcrun: error: invalid active developer path missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun
- Select Line Number TextEdit on Mac
- Go to Specific file path using Mac Finder
- How to find Java HOME in Mac Terminal
- bash: command not found error [macOS Terminal Linux, Unix or Windows]
- Must Know Homebrew Commands for Mac/Linux Users
- How to Insert an Inverted Question Mark on Mac ¿
- Hide Keyboard Text Input Icon on macOS Ventura Menu Bar
- How to make macOS Terminal window Transparent (or Opaque)
- How to check of Updates on Microsoft Edge Browser on Mac (macOS)
- Limit scrollback rows in macOS Terminal
- How to identify installed Java (JDK) Version on macOS
- Keyboard Shortcut to delete a file on a Mac [Macbook]
- Open Docker from Terminal Command on Mac
- Installing MongoDB on Linux/Unix/macOS/Ubuntu
- How to take a screenshot on a Mac - updated for Ventura 13 [updated 2023]
- ls: .: Operation not permitted - Mac Terminal ZSH Error
- How to remove username from Mac Menu Bar?
- macOS Ventura XCode Command Line Tools Installation
- Where is .zshrc file located in macOS
- How to Show Path of Files or App in Mac Spotlight Search
- How to enable root user on Mac Terminal
- Install Java 17 (LTS) JDK on ARM based M1/M2 Mac Natively
- [Android Studio] Button on click example - Android-Studio
- Spring 5 IoC Example with application Context XML (ClassPathXmlApplicationContext) and Gradle. - Java
- Fix Error Code: 80090030 in Microsoft Outlook/Teams - Microsoft
- Change the default git branch name from master to main - Git
- Division between two numbers - C-Program
- Fix for zsh: command not found: brew - zsh
- Get the total size and number of objects of a AWS S3 bucket and folders - AWS
- Clear SFTP Prompt Screen on macOS Terminal - MacOS