Yes, you can change your MAC address, and it takes minutes on most devices

Your MAC address (Media Access Control address) is a unique identifier assigned to your network card — the hardware that connects you to Wi-Fi or ethernet. It looks like six pairs of numbers and letters: 00:1A:2B:3C:4D:5E. You can change it temporarily on Windows, macOS, and Linux without any special software or administrator permission beyond what you already have.

The change is temporary: it lasts only until you restart your device or disconnect from the network. If you need it to stick permanently, the process is different and depends on your operating system. Most people change their MAC address to connect to a network that blocks certain devices, to test network security, or to reset a device's network history.

Key Takeaways

  • On Windows, you change your MAC address through Device Manager by editing the network adapter's advanced properties — no restart needed.
  • On macOS, you use Terminal with a single command that takes effect when ready and lasts until you restart.
  • On Linux, the ifconfig or ip command changes your MAC address in seconds, and the change persists until reboot.
  • A temporary MAC address change lasts only until you restart your device or disconnect and reconnect to the network.
  • Some networks detect MAC address changes and may block you, so changing your address does not may provide access to a restricted network.

Changing your MAC address on Windows

On Windows, the easiest route is through Device Manager. Right-click the Start button, select Device Manager, and expand Network adapters. Right-click the adapter you want to change (usually called Ethernet or your Wi-Fi card name), select Properties, and go to the Advanced tab.

Look for a property called "Locally Administered Address," "Network Address," or "MAC Address" — the exact name varies by network card manufacturer. Click it, select the Value radio button on the right, and type your new MAC address as 12 characters without colons or hyphens (for example: 001A2B3C4D5E). Click OK. The change takes effect when ready without a restart.

If you do not see a network address option in the Advanced tab, your network card driver does not support MAC address changes through Device Manager. In that case, you will need third-party software like TMAC or Technitium MAC Address Changer, both of which are free and work the same way: they change the value in your network adapter's settings.

Changing your MAC address on macOS

On macOS, you use Terminal. Open Terminal (find it in Applications > Utilities), and type this command, replacing en0 with your network interface name if it is different:

sudo ifconfig en0 lladdr 00:1A:2B:3C:4D:5E

Replace 00:1A:2B:3C:4D:5E with the MAC address you want. Press Enter, type your password, and press Enter again. The change takes effect when ready. To find your current MAC address or confirm the change worked, type ifconfig en0 and look for the line that starts with lladdr.

If you are not sure which interface to use, type ifconfig with no arguments to see all your network interfaces. en0 is usually Wi-Fi and en1 or en5 is usually ethernet, but this varies by Mac model and macOS version.

Changing your MAC address on Linux

On Linux, you use either ifconfig or the newer ip command, depending on your distribution. First, open a terminal and find your interface name by typing ip link show or ifconfig. Your interface is usually called eth0, wlan0, or enp0s3.

If you are using ifconfig, type this command (replace wlan0 with your interface name):

sudo ifconfig wlan0 hw ether 00:1A:2B:3C:4D:5E

If you are using the ip command, type:

sudo ip link set dev wlan0 address 00:1A:2B:3C:4D:5E

Either way, replace 00:1A:2B:3C:4D:5E with your new MAC address. The change takes effect when ready. To verify it worked, type ip link show wlan0 and look for the address line.

Making a MAC address change permanent

On Windows, a change made through Device Manager persists until you restart. To make it permanent, you must edit the registry or use third-party software that writes the change to your network card's firmware. Most people do not need to do this — a temporary change is enough for testing or one-time access.

On macOS and Linux, you can make the change permanent by adding the command to a startup script or network configuration file, but the exact steps depend on your system version and network setup. For most users, rerunning the command after each restart is simpler than editing system files.

Why your MAC address change might not work

Some networks use MAC address filtering to allow or block specific devices. If you change your MAC address to match an allowed device, the network may still block you if it checks the address at connection time — your change happens after you connect, so the network sees the old address first.

Virtual machines and some network drivers do not support MAC address changes at all. If the command runs without error but the address does not change, your driver does not support it. Some corporate networks also detect and block MAC address changes as a security measure.

If you disconnect and reconnect to the network after changing your MAC address, the network will see the new address. If you stay connected, most networks do not re-check the address until you disconnect.

When you might want to change your MAC address

The most common reason is to bypass a device limit on a network — some Wi-Fi networks allow only a certain number of devices per account, and changing your MAC address makes your device look new to the network. Another reason is to reset your device's network history if you are selling it or giving it away and want to remove any stored network passwords or connection logs.

Network administrators and security testers change MAC addresses to test whether a network's access controls actually work. Developers sometimes change MAC addresses to simulate different devices on the same machine.

Frequently Asked Questions

Will changing my MAC address hide my identity online?

No. Your MAC address is only visible to devices on your local network — your router, other computers on the same Wi-Fi, and the network itself. Websites and internet services never see your MAC address. To hide your identity online, you would need a VPN or proxy, not a MAC address change.

Can I change my MAC address to any number I want?

Technically yes, but some addresses are reserved or invalid. A valid MAC address is 48 bits (12 hexadecimal characters). The first character of the second pair should be even if you want to avoid conflicts with manufacturer-assigned addresses — for example, 02:1A:2B:3C:4D:5E is safer than 01:1A:2B:3C:4D:5E. Most networks do not enforce this, but it is good practice.

Does changing my MAC address void my warranty?

No. Changing your MAC address is a software setting that does not modify your hardware. Your network card itself is unchanged, and the setting reverts when you restart. This is not the same as modifying firmware or hardware, which might affect warranty coverage.

What happens to my MAC address change when I restart?

It disappears. Your network card returns to its original, factory-assigned MAC address. If you need the change to last longer, you must either run the command again after each restart or make it permanent through your system's startup scripts or network configuration files.

Can I change the MAC address of my phone?

On Android, you can change your MAC address if your device is rooted and you have terminal access, but most users cannot do this without rooting. On iPhone, you cannot change your MAC address — Apple does not provide a way to do it, and iOS does not allow the terminal access required. Some newer Android phones randomize their MAC address automatically for privacy, which you can usually turn off in Wi-Fi settings.