What a Mac address is and why you need it

A MAC address (Media Access Control address) is a unique identifier assigned to every device that connects to a network — your laptop, phone, printer, smart TV, or router. It looks like a string of six pairs of characters separated by colons or hyphens, such as 00:1A:2B:3C:4D:5E. Unlike your IP address, which can change when you move networks, your MAC address stays the same for that specific device.

You need your MAC address when you're setting up a new network, troubleshooting connection problems, or registering a device on a restricted network (like a school or workplace WiFi that requires device registration). Some routers use MAC filtering to allow only certain devices to connect. If you're selling or giving away a device, you may also want to know its MAC address to confirm you're removing it from your network properly.

Key Takeaways

  • On Windows, open Command Prompt and type ipconfig /all to find the Physical Address listed next to your network adapter.
  • On Mac, go to System Settings, select Network, choose your connection, and click Details to see the MAC Address field.
  • On iPhone or iPad, open Settings, tap General, select About, and scroll to find Wi-Fi Address.
  • On Android, open Settings, go to About Phone, tap Status or Device Info, and look for MAC Address or Wi-Fi MAC Address.
  • If you can't find it in settings, restart your device and try again, as some systems hide the MAC address until the network adapter is active.

Finding your MAC address on Windows

The fastest way on Windows is through Command Prompt. Right-click the Start menu, select Terminal (Windows 11) or Command Prompt (Windows 10), and type ipconfig /all then press Enter. Scroll through the output until you find your active network connection — it will show either "Ethernet adapter" or "Wireless LAN adapter" depending on whether you're wired or on WiFi. Next to "Physical Address" you'll see your MAC address.

If you prefer not to use the command line, you can also find it through Settings. Open Settings, go to Network & Internet, select your connection type (WiFi or Ethernet), click the connection name, then scroll down to find "Physical address (MAC)." This method takes a few more clicks but shows the same information.

Finding your MAC address on Mac

Open System Settings and click Network in the sidebar. Select the connection you want to check — WiFi or Ethernet — then click Details. In the window that opens, look for the field labeled "MAC Address." That's your device identifier for that connection.

If you're connected via WiFi, the MAC address shown is specific to your WiFi adapter. If you have both WiFi and Ethernet plugged in, each has its own MAC address. Check both if you're not sure which connection you're using.

Finding your MAC address on iPhone or iPad

Open the Settings app and tap General. Scroll down and select About. In the About screen, look for "Wi-Fi Address" — that's your MAC address. It will be a string of letters and numbers separated by colons.

Note that iPhones and iPads only show the WiFi MAC address in Settings, not a separate Bluetooth MAC address in the same location. If you need the Bluetooth address for a specific pairing issue, you may need to check your router's connected devices list instead, which sometimes shows both.

Finding your MAC address on Android

Open Settings and scroll to About Phone (or About Device on some phones). Look for a Status or Device Info option and tap it. Scroll through until you find "MAC Address" or "Wi-Fi MAC Address" — the exact label varies by manufacturer and Android version. Write it down or take a screenshot.

Some Android phones hide this information deeper in the menu. If you don't see it under Status, try going back to Settings, searching for "MAC address" using the search bar at the top, and tapping the result. Samsung phones sometimes list it under Device Care instead of About Phone.

Finding your MAC address on a printer or smart device

For devices without a traditional settings menu — printers, smart speakers, security cameras, or smart home devices — check the physical device first. Many have a label on the back or bottom that lists the MAC address, sometimes called the "hardware address" or "network address."

If there's no label, restart the device and check your router's admin panel. Log into your router (usually by typing your router's IP address into a browser, often 192.168.1.1 or 192.168.0.1), then look for a section called Connected Devices, DHCP Clients, or Device List. Your device will appear there with its MAC address listed next to it.

What to do if you can't find your MAC address

If the MAC address field appears blank or missing, the device may not be actively connected to a network. Restart the device and try again — most systems only display the MAC address once the network adapter has initialized. Make sure WiFi or Ethernet is turned on before checking.

If you're looking for a device that's no longer in your possession, you won't be able to retrieve its MAC address from the device itself. Instead, check your router's admin panel or contact your network administrator — they may have a log of devices that were previously connected. Your internet service provider can also sometimes provide this information if the device was registered on your account.

Frequently Asked Questions

Can someone find my MAC address without my permission?

Yes, if they're on the same network as you. Your MAC address is broadcast every time your device connects to WiFi or Ethernet, so anyone with network access can see it. This is why some people change their MAC address on public networks, though this is uncommon for most users and not necessary for basic privacy.

Will my MAC address change if I reset my device?

No. A factory reset will not change your MAC address — it's burned into your network hardware. The only way to change it is through advanced settings or specialized software, which most people never need to do.

Is my MAC address the same on WiFi and Ethernet?

No. Each network adapter on your device has its own MAC address. If your laptop has both a WiFi adapter and an Ethernet port, they will have different MAC addresses. Check the specific connection you're using.

Do I need my MAC address to connect to public WiFi?

Usually not. Most public WiFi networks don't require MAC registration. However, some corporate networks, schools, and apartment complexes do require you to register your device's MAC address before it can access the network.

What if two devices have the same MAC address?

This is extremely rare on legitimate devices, but if it happens, both devices will have network problems because the router can't tell them apart. If you suspect a duplicate, restart both devices. If the problem persists, contact your network administrator or the device manufacturer.