Yes, you can change your MAC address, but the change is temporary unless you make it permanent in your system settings

A MAC address (Media Access Control address) is a unique identifier assigned to your network card—the hardware that connects your device to the internet. Every network card comes with a factory-set MAC address, but most operating systems let you override it with a different one. The change takes effect when ready, but it resets to the original address when you restart your device unless you configure it to stick.

Why change it? Some people do it to test network security, work around a network filter that blocks certain devices, or troubleshoot connection problems. Others change it for privacy on public networks. The process differs depending on whether you use Windows, macOS, or Linux, and whether you want the change to last through a restart.

Key Takeaways

  • MAC address changes are temporary by default and reset when you restart your device.
  • Windows requires third-party software or command-line tools to change your MAC address; the built-in settings do not offer this option.
  • macOS and Linux both allow MAC address changes through terminal commands, though the steps and syntax differ between them.
  • Making a MAC address change permanent requires editing network configuration files or driver settings, which varies by operating system.
  • Some networks detect spoofed MAC addresses and block devices, so a changed address may not always work on restricted networks.

How to change your MAC address on Windows

Windows does not include a built-in graphical tool to change your MAC address. Your options are to use third-party software or to access the network adapter settings through Device Manager and edit the registry—both require administrator access.

The easiest route is a free utility like TMAC or Technitium MAC Address Changer. read the software, open it, select your network adapter from the list, enter a new MAC address (it must follow the format of six pairs of hexadecimal characters, like 00:1A:2B:3C:4D:5E), and click the button to change it. The change takes effect when ready. When you restart, it reverts to the original unless you configure the software to reapply it at startup.

If you prefer not to install software, you can change the MAC address through Device Manager. Open Device Manager, find your network adapter under "Network adapters," right-click it, select Properties, go to the Advanced tab, look for an option called "Locally Administered Address" or "Network Address," and enter your new MAC address in the value field. Not all network adapters expose this setting, so this method does not work on every device.

How to change your MAC address on macOS

On macOS, you change your MAC address using the Terminal. Open Terminal (found in Applications > Utilities), and use the ifconfig command to list your network interfaces and see their current MAC addresses. Identify the interface you want to change—usually en0 for Ethernet or en1 for Wi-Fi.

To change it temporarily, type the command sudo ifconfig en0 lladdr XX:XX:XX:XX:XX:XX, replacing en0 with your interface name and the X's with your new MAC address. You will be prompted for your password. The change takes effect when ready and lasts until you restart.

To make the change permanent, you need to create or edit a launch daemon file that runs the command at startup. This requires creating a file in /Library/LaunchDaemons/ and is more involved. Most users find it simpler to run the temporary command each time they need it, or to use a third-party app like Spoof that automates the process.

How to change your MAC address on Linux

Linux offers several ways to change your MAC address depending on your network manager. If you use NetworkManager (the default on most desktop distributions), open Terminal and use the command nmcli to list your connections and then set a new MAC address for a specific connection.

For a temporary change, use sudo ip link set dev eth0 address XX:XX:XX:XX:XX:XX, replacing eth0 with your interface name. The change lasts until the next restart or until you bring the interface down and back up.

To make it permanent, edit your network configuration file. On systems using NetworkManager, this is usually in /etc/NetworkManager/conf.d/ or /etc/network/interfaces depending on your distribution. Add a line specifying the new MAC address for that interface. On systems using systemd-networkd, edit the relevant .network file in /etc/systemd/network/. The exact location and syntax vary, so check your distribution's documentation.

Why your MAC address change might not work on some networks

Some networks—particularly corporate networks, schools, and public Wi-Fi systems—use MAC address filtering to control which devices can connect. If your network has a whitelist of approved MAC addresses, changing yours to one not on that list will block your connection.

Additionally, some networks detect when a MAC address does not match the device type or manufacturer code embedded in it. If you change your MAC address to one that claims to be an Apple device but you are connecting from a Windows machine, the network may flag it as suspicious and block it. For this reason, a changed MAC address works best on open networks where filtering is not in place.

When to call a professional

If you are changing your MAC address to troubleshoot a network problem, start by contacting your internet service provider or network administrator. They can tell you whether MAC address filtering is active on your network and whether changing it will help or cause problems.

If you are not comfortable using Terminal or Device Manager, or if you need the change to persist across restarts and the methods above do not work on your device, a local IT support person can handle it for you. They can also advise whether a MAC address change is the right solution for what you are trying to accomplish.

Frequently Asked Questions

Will changing my MAC address affect my internet speed or connection quality?

No. Your MAC address is used only to identify your device on the local network. Changing it does not affect how fast data travels or the quality of your connection. If your connection improves after a MAC address change, it is usually because the change bypassed a filter or conflict, not because the address itself matters to speed.

Can I change my MAC address to match another device on the network?

Technically yes, but it is a bad idea. If two devices have the same MAC address on the same network, both will experience connection problems because the network cannot tell them apart. Use a unique MAC address, or if you are testing, use one that follows the correct format but is not assigned to any real device.

Does changing my MAC address hide my identity online?

No. Your MAC address is only visible to devices on your local network (your home Wi-Fi, for example). Websites and internet services see your IP address instead, which is not affected by a MAC address change. To hide your identity online, you would need to use a VPN or proxy, not change your MAC address.

What happens if I change my MAC address and then restart my computer?

It reverts to the original MAC address that came with your network card. Unless you configure your system to reapply the change at startup (through a script, configuration file, or third-party software), each restart erases the change.

Can I change the MAC address of my phone or tablet?

On Android, some devices allow it through developer settings or third-party apps, but it varies by manufacturer and Android version. On iPhone, Apple does not provide a way to change the MAC address. If you need to change a MAC address on a mobile device, check your device's settings or contact the manufacturer to see if it is supported.