How to Change Your MAC Address on Windows, macOS, and Mobile

Every network adapter — in your laptop, phone, or router — ships with a unique hardware identifier called a MAC address, and most people never think about it unless something goes wrong. But there are legitimate reasons to change it: protecting your privacy on public Wi-Fi, testing network configurations, or working around a device-based restriction on a network you’re authorized to use. This guide covers why people change their MAC address and what the trade-offs are, then walks through exactly how to do it on Windows, macOS, Android, and iOS, along with a look at third-party tools that simplify the process on desktop.

Why People Change Their MAC Address, and What to Watch Out For

Before diving into the how-to steps, it’s worth understanding what changing a MAC address actually accomplishes — and where it can cause problems.

Why would someone want to change their MAC address? The most common reason today is privacy: since a MAC address can be used to track a device’s presence and movement across different Wi-Fi networks over time, randomizing it (a feature now built into most modern operating systems, covered in the mobile section below) makes that kind of tracking significantly harder. Other legitimate reasons include troubleshooting network hardware, testing how a network responds to different device identities, or working around a MAC-based device limit on your own home network or a network you’re authorized to configure.

Is changing a MAC address legal? In most jurisdictions, changing your own device’s MAC address is legal — it’s a standard, vendor-supported feature built into modern operating systems for privacy purposes, as detailed further down. However, using a modified MAC address specifically to gain unauthorized access to a network, evade a ban you’ve been issued, or impersonate another device on a network you don’t own or have permission to access can cross into unauthorized access, which is illegal in many places regardless of how the MAC address itself was obtained. The legality hinges on intent and authorization, not on the act of changing the address itself.

What happens on the network side when you change it? A changed MAC address is temporary at the software level — it doesn’t alter the hardware, and it typically reverts after a reboot or network disconnect unless you’ve set it to persist. On the network you’re connecting to, the device will simply appear as a new, unrecognized client, which means it may need to reconnect to Wi-Fi, re-authenticate on networks using MAC filtering, and could temporarily lose access to anything tied to its previous identity, such as parental controls or bandwidth limits configured by MAC address on a router.

Are there any risks to changing it? The main practical risk is connectivity disruption — some networks use MAC address recognition for legitimate purposes (like assigning a consistent IP via DHCP reservation), and changing your MAC address can break that association until it’s reconfigured. There’s also a risk of MAC address collision if you manually set one that happens to match another device already on the same network, which can cause intermittent connectivity issues for both devices.

With the reasoning and trade-offs in mind, here’s how to actually make the change on each major platform, starting with Windows.

How to Change Your MAC Address on Windows 10 and 11

Windows allows you to change a network adapter’s MAC address directly through Device Manager, without needing any third-party software.

1. Open Device Manager. Right-click the Start button and select Device Manager, or search for it directly in the Start menu.
2. Expand Network Adapters. Find and click the arrow next to Network adapters to see your list of network hardware.
3. Right-click your active adapter and select Properties. Choose the Wi-Fi or Ethernet adapter you want to modify, depending on which connection you’re changing.
4. Go to the Advanced tab. Within the adapter’s Properties window, click the Advanced tab at the top.
5. Find the Network Address (or Locally Administered Address) property. In the list of properties, look for one labeled Network Address or Locally Administered Address — the exact wording varies slightly by adapter manufacturer.
6. Enter a new MAC address value. Select the Value radio button and type a new 12-character hexadecimal MAC address with no colons or dashes (for example, 001A2B3C4D5E). Avoid using a MAC address that starts with an odd first byte value in certain positions, as some formats are reserved for multicast use and won’t function correctly.
7. Click OK to apply the change. Windows will briefly disable and re-enable the adapter to apply the new address.
8. Verify the change. Open Command Prompt and run ipconfig /all, checking the “Physical Address” field for the adapter to confirm it matches the value you entered.
9. To revert, select Not Present in the same field. Choosing “Not Present” instead of “Value” restores the adapter’s original, hardware-assigned MAC address.

If your specific adapter doesn’t show a Network Address property in Device Manager, that typically means the manufacturer’s driver doesn’t expose this setting — in that case, third-party software (covered later in this article) is generally the more reliable path.

How to Change Your MAC Address on macOS Using Terminal

macOS doesn’t offer a graphical option for this, but it can be done through Terminal commands for Wi-Fi and Ethernet adapters.

1. Open Terminal. Find it via Spotlight search or under Applications > Utilities.
2. Identify your network interface name. Run networksetup -listallhardwareports and note the “Device” value for the interface you want to change (commonly en0 for Wi-Fi on many Mac models, though this varies).
3. Turn off Wi-Fi before making the change. Run networksetup -setairportpower en0 off (replacing en0 with your actual interface name if different), since the MAC address typically can’t be changed while the adapter is actively connected.
4. Change the MAC address using ifconfig. Run the following, substituting your interface name and desired MAC address:

sudo ifconfig en0 ether 00:1a:2b:3c:4d:5e

5. Turn Wi-Fi back on. Run networksetup -setairportpower en0 on to reactivate the adapter with the new address.
6. Verify the change. Run ifconfig en0 and check the “ether” field to confirm the new MAC address is active.
7. Reconnect to your network. You may need to manually rejoin your Wi-Fi network since the device now presents as a new client, as noted in the network-side effects covered earlier.

Keep in mind this change is temporary and will typically revert to the hardware MAC address after a restart, since macOS doesn’t persist this override by default — you’ll need to repeat these steps each time you want the change to remain active after a reboot.

Changing or Randomizing Your MAC Address on Android and iPhone

Unlike Windows and macOS, modern mobile operating systems don’t require terminal commands or root/jailbreak access — MAC randomization is a built-in privacy feature accessible directly through Wi-Fi settings.

On Android (most versions from Android 10 onward):

1. Open Settings > Network & internet > Wi-Fi (labeling may vary slightly by manufacturer).
2. Tap the gear icon next to your connected network, or tap the network name and then Advanced.
3. Look for a setting labeled Privacy or MAC address type.
4. Choose between Use randomized MAC (a different, randomized address is used per network, refreshing periodically) or Use device MAC (your actual hardware address is used).
5. Selecting the randomized option applies immediately without needing to reconnect manually in most cases.

On iPhone (iOS 14 and later):

1. Open Settings > Wi-Fi.
2. Tap the (i) info icon next to the network you’re connected to.
3. Toggle on Private Wi-Fi Address.
4. iOS will generate a randomized address for that specific network; this can be toggled per network individually, and newer iOS versions also offer a “Rotate” option to periodically refresh the randomized address for extra privacy.

On both platforms, this randomization is scoped to Wi-Fi privacy specifically — it’s designed to prevent tracking across networks over time rather than to permanently spoof a fixed custom address the way the Windows and macOS methods above allow, and neither platform requires root or jailbreak access to use it.

Third-Party MAC Address Changer Software for Desktop

If you’d rather not use Device Manager or Terminal directly, or you need a tool that persists changes automatically and reverts them easily, several free desktop utilities are commonly used for this purpose.

• Technitium MAC Address Changer (Windows): A free, actively maintained, and widely recommended tool that provides a simple graphical interface for selecting an adapter, entering or randomly generating a new MAC address, and applying it — including an option to automatically reapply the spoofed address every time the adapter connects.
• SMAC (Windows): One of the longer-standing MAC changer tools, offering a straightforward interface for viewing and editing adapter MAC addresses, though the free version has more limited features compared to its paid tier.
• Wireless Network Watcher + built-in ifconfig scripting (macOS): Rather than a single dedicated GUI tool, most Mac users script the Terminal-based method covered earlier into a simple shell script or automation shortcut, since macOS doesn’t have as mature a third-party GUI ecosystem for this specific task as Windows does.
• macchanger (Linux, and available via Homebrew on macOS): A widely used command-line utility that simplifies the ifconfig-based process shown above into a single command, and supports fully randomizing a MAC address or specifying a particular vendor prefix.

Before installing any MAC changer utility, confirm you’re downloading from the tool’s official source rather than a third-party mirror, since MAC address changer tools are a common target for bundling unwanted or malicious software in unofficial downloads.

Whether you’re using Device Manager on Windows, a Terminal command on macOS, the built-in randomization features on your phone, or a dedicated third-party tool, changing your MAC address is a well-supported, reversible setting on every major platform — just remember that on Windows and macOS the change typically doesn’t survive a reboot, and that using it responsibly means sticking to networks and devices you’re actually authorized to configure.

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