Change your Mac name through System Settings

The fastest way to change your Mac's name is through System Settings. Open System Settings, select General from the sidebar, then click About. You'll see a field labeled "Computer Name" — click it, type the new name you want, and press Enter. The change takes effect immediately.

Your Mac name is what appears in Finder, on your network, and when other devices search for your computer. It can be up to 63 characters long and can include letters, numbers, hyphens, and spaces. Avoid special characters like @ or # because some network services won't recognize them.

If you're running an older version of macOS (before Monterey), the process is slightly different: go to System Preferences instead of System Settings, then click Sharing, and change the name in the "Computer Name" field at the top. The name you enter will be visible to anyone on your local network within seconds.

Key Takeaways

  • Your Mac name is visible to other devices on your network and appears in Finder — changing it does not affect your user account or files.
  • The name can be up to 63 characters and should avoid special characters that network services may not recognize.
  • On newer Macs (Monterey and later), use System Settings > General > About; on older versions, use System Preferences > Sharing.
  • The change takes effect immediately and does not require a restart.

What happens when you change your Mac name

Changing your Mac name does not affect your user account, passwords, files, or any software installed on your computer. It only changes the identifier that appears when your Mac connects to a network or shows up in Finder on other computers.

If your Mac is part of a workplace network, check with your IT department before changing the name — some organizations require specific naming conventions for network management. If you share files with others over a local network, they may see the new name the next time they browse available computers.

Changing your Mac name from Terminal

If System Settings is not responding or you prefer the command line, you can change your Mac name using Terminal. Open Terminal (found in Applications > Utilities), then type: sudo scutil --set ComputerName "NewName" and press Enter. Replace "NewName" with what you want to call your Mac.

You'll be asked for your password — type it and press Enter. The change takes effect immediately. If you want to change the local hostname as well (used for network services), run: sudo scutil --set LocalHostName "newname" using the same name in lowercase and without spaces.

Most users do not need to change the LocalHostName — the ComputerName change alone is sufficient for everyday use and network visibility. The Terminal method is useful if you manage multiple Macs or need to automate the process across several devices.

Choosing a name that works across your devices

If you have multiple Macs, an iPhone, or an iPad, consider using a naming scheme that helps you identify each device. Common approaches include adding the device type (like "Sarah-MacBook" or "Sarah-iMac") or location (like "Office-Mac" or "Home-Mac").

Avoid names that are too similar to each other — if you have "Mac1" and "Mac2", they're harder to distinguish in a list of available devices. Names that include the year or purpose ("2024-Work-Mac") can also help you remember which device is which when you're troubleshooting network issues or connecting to shared printers and drives.

Troubleshooting if the name won't change

If you change the name in System Settings but it doesn't stick, restart your Mac and check again. Sometimes the change requires a restart to propagate across all system services, particularly if your Mac is connected to a network domain or uses iCloud.

If you're on a work network and the name reverts after restart, your organization's network administrator may have locked the computer name. Contact your IT department — they can tell you whether the name is managed remotely and change it for you if needed.

If Terminal returns a "permission denied" error, make sure you included sudo at the start of the command and that you entered your password correctly. If you're not the administrator of your Mac, you may not have permission to change the name — ask the administrator to make the change.

Frequently Asked Questions

Does changing my Mac name affect my Apple ID or iCloud?

No. Your Apple ID and iCloud account are separate from your Mac's computer name. Changing the name does not sign you out, affect your files, or change how iCloud syncs. Your Mac will still appear under the same name in your iCloud settings, but you can update that separately if you want.

Can I change my Mac name back to the default?

Yes. The default name is usually something like "MacBook-Pro" or "[Your Name]'s Mac". You can type any name you want, including going back to the original. There's no penalty for changing it multiple times.

Will changing my Mac name affect my Wi-Fi or internet connection?

No. Your Mac's name is separate from your network settings. Changing it does not disconnect you from Wi-Fi, affect your internet speed, or change your IP address. Your connection remains stable throughout the change.

What if I share my Mac with other users?

The computer name is shared across all user accounts on that Mac — changing it affects everyone who uses the device. If multiple people use the same Mac, consider discussing the name change with them first, though it won't impact their files or accounts.