What a Mac Address Is and Why You Need It
Your Mac address (Media Access Control address) is a unique identifier assigned to the network card in your device — the hardware that connects your computer to WiFi or ethernet. It looks like six pairs of numbers and letters separated by colons or hyphens, such as 00:1A:2B:3C:4D:5E. Every network card in the world has a different one.
You need your Mac address when you're setting up a new WiFi network, connecting to a restricted network that only allows certain devices, troubleshooting connection problems with your internet provider, or registering your device with a network administrator at work or school. Your Mac address stays the same as long as you keep the same network card; it doesn't change when you restart your computer or move to a different location.
Key Takeaways
- Your Mac address is a unique identifier for your network card and appears as six pairs of numbers and letters separated by colons.
- The fastest way to find it on Windows 11 is to open Settings, go to Network & Internet, then Advanced Network Settings, and look for your connection type.
- You can also find your Mac address by opening Command Prompt and typing ipconfig /all, then looking for the line labeled "Physical Address".
- If you have both WiFi and ethernet, you'll have two different Mac addresses — one for each network card.
Finding Your Mac Address Through Windows Settings
Open the Settings app by pressing the Windows key and typing "Settings", then click the Settings icon that appears. Once Settings opens, click Network & Internet on the left side of the window.
On the Network & Internet page, scroll down and click Advanced Network Settings. You'll see a list of your network connections. Click on the connection you want to check — either WiFi if you're connected wirelessly, or Ethernet if you're using a wired connection. A details panel will open on the right side showing information about that connection. Scroll down in this panel until you see Physical Address. The string of numbers and letters next to it is your Mac address.
If you're not currently connected to the network you want to check, you can still find its Mac address this way. The Mac address belongs to your network card itself, not to the connection, so it will be the same whether you're connected or not.
Finding Your Mac Address Using Command Prompt
Press the Windows key and type "Command Prompt", then click the Command Prompt app. A black window will open with a blinking cursor. Type the following command exactly as shown: ipconfig /all and press Enter.
A list of information will appear on the screen. Look for the section labeled with your connection type — you'll see headings like "Ethernet adapter" or "Wireless LAN adapter". Under that heading, find the line that says Physical Address. The Mac address is the string of numbers and letters next to it, usually formatted with hyphens like 00-1A-2B-3C-4D-5E.
If you have both WiFi and ethernet connected, you'll see two separate sections with two different Physical Addresses. Each network card has its own unique Mac address. Copy or write down the one that matches the connection type you need.
Finding Your Mac Address for a Specific Network Card
If you need to find the Mac address for a network card that isn't currently active or connected, open Settings and go to Network & Internet, then Advanced Network Settings. Scroll down to the bottom of the page and click More Network Adapter Options. This opens the older Network Connections window.
You'll see a list of all network adapters on your computer, including ones that aren't currently in use. Right-click on the adapter you want to check and select Status. A window will open showing details about that adapter. Click the Details button, and a new window will appear. Look for the line labeled Physical Address — that's your Mac address for that specific network card.
What to Do Once You Have Your Mac Address
Once you've found your Mac address, you can use it to register your device with a network. If someone asks for your Mac address to add your device to a WiFi network or restricted system, provide them with the exact string of numbers and letters — they may ask you to spell it out letter by letter to avoid mistakes.
Write down or screenshot your Mac address if you think you'll need it again soon. You can always look it up again using the same steps, but having it saved saves time. If you're troubleshooting a connection problem with your internet provider, they may ask for your Mac address to check their records on their end.
Frequently Asked Questions
Can I change my Mac address?
Your physical Mac address is built into your network card and cannot be permanently changed. Some software can temporarily spoof a Mac address for advanced networking purposes, but this is not a standard task and requires technical knowledge. For most situations, you won't need to change it.
Why do I see two different Mac addresses on my computer?
If you have both WiFi and ethernet ports on your computer, each one is a separate network card with its own unique Mac address. This is normal. You only need the Mac address for whichever connection type you're actually using.
Is my Mac address the same as my IP address?
No. Your Mac address identifies your network card and stays the same. Your IP address identifies your device on a specific network and changes depending on which network you connect to. They serve different purposes.
What if I can't find the Physical Address line in Command Prompt?
Make sure you typed the command correctly: ipconfig /all with a space between ipconfig and the forward slash. If you typed ipconfig without the /all part, you'll see less detailed information. Run the command again with the full text.
Do I need my Mac address to connect to regular WiFi?
No. You only need your Mac address if the network owner has specifically set up a filter that only allows certain devices, or if they ask you to register your device before connecting. For standard WiFi networks, you just need the network name and password.