Every network-compatible device can be identified by its MAC (media access control) address, a unique 17-character string of letters, numbers and colons. And while you may need to know your MAC address — some networks filter devices by MAC addresses for the sake of security — it’s not exactly easy to find.
We tested the following steps in macOS 10.12 Sierra, and these steps work the same way for all versions dating back to OS X 10.7 Lion, though it will be listed as a WiFi Address in older versions.
Using Windows instead? Here’s how to find your MAC address on Windows 10.
Here’s how to find your MAC address in four easy steps:
1. Click the Apple icon in the top left corner.
2. Select System Preferences.
3. Select Network.
4. Click Advanced in the bottom right corner.
You’ve found your MAC Address!
Apple Laptop Guide