Finding the MAC address on a Mac is a fundamental task for network troubleshooting, security audits, and device registration. The MAC address, or Media Access Control address, is a unique identifier assigned to your network interface hardware. Unlike an IP address, which can change depending on your network, the MAC address is typically permanent. This guide details the precise methods to locate this identifier using the Terminal and System Settings.
Understanding MAC Addresses on macOS
Before diving into the commands, it is essential to understand what you are looking for. Every network interface, such as Wi-Fi or Ethernet, has a unique MAC address burned into its hardware. On macOS, you can query this information using the `ifconfig` command, which displays detailed network configuration data. For most users, the `en0` interface corresponds to the built-in Wi-Fi, while `en1` often represents a wired Ethernet connection.
Using the ifconfig Command
The most common and versatile method involves the `ifconfig` command combined with `grep`. This pipeline searches through the network configuration output to isolate the specific line containing the hardware address. To execute this, open the Terminal application, located in the Utilities folder within your Applications directory.
Once the terminal is open, type the following command and press enter:
The result will display the word "ether" followed by a 12-character hexadecimal number, formatted as six pairs of digits separated by colons. This string is the physical hardware address of your Wi-Fi adapter. If you are connected via a wired connection, you may need to run the same command but replace en0 with en1 or another interface identifier.
Alternative Command for Specific Interface Listing
If you are unsure which interface name corresponds to your active connection, you can list all available network interfaces directly. This command provides a clean list of interface names, helping you identify the correct one to query for the MAC address.
Use this command in the terminal:
ifconfig -l
This will output a list such as lo0 en0 en1 , clearly showing you the loopback, wireless, and wired interfaces. With this knowledge, you can then target the specific interface to retrieve its MAC address accurately.
Finding the Address via System Settings
While the terminal provides the fastest path to the MAC address, macOS also offers a graphical method through the System Settings. This approach is ideal for users who prefer navigating menus over typing commands. The information is located within the Network section of the System Preferences or Settings panel.
To find it this way, follow these steps:
Open the System Settings (or System Preferences on older macOS).
Click on Network .
Select your active connection (Wi-Fi or Ethernet) from the sidebar.
Click the Advanced button.
Navigate to the Hardware tab. The MAC address will be displayed here.
Advanced Usage with ifconfig
For users requiring comprehensive network details, running ifconfig alone provides a wealth of information. This includes IP addresses, subnet masks, and the MAC address all at once. However, the output is dense and requires parsing to find the specific data point you need.
By default, running ifconfig will display details for the en0 interface at the top. Look for the line labeled "ether" under the section headers. This method is useful for verifying multiple network configurations or diagnosing issues where multiple interfaces are active simultaneously.
