Where to find your computer's name

Your computer has a name — a label Windows, Mac, or Linux uses to identify it on a network. You need this name if you're sharing files with other computers, setting up a printer, troubleshooting connection problems, or just keeping track of which device is which. The name is usually something like "DESKTOP-A7K9M2" or "MacBook-Pro" or whatever you or your IT person chose when the computer was first set up.

Finding it takes less than a minute and requires no special tools. The steps differ slightly depending on whether you use Windows, Mac, or Linux, but the information is always in the same general place: your system settings.

Key Takeaways

  • Your computer's name appears in Windows under Settings > System > About, in the "Device name" field.
  • On a Mac, open System Settings > General > About and look for the "Computer Name" field at the top.
  • Linux users can open a terminal and type hostname to see the name when ready.
  • You may also see your computer's name in your router's list of connected devices or in network settings.

Finding your computer name in Windows

Open the Settings app by pressing the Windows key and typing "Settings", then press Enter. Click on System in the left sidebar, then scroll down and click About. Look for the field labeled Device name — that is your computer's name. It appears near the top of the page, usually above "Device ID".

If you want to change the name, click the Rename this PC button on the same page. Windows will ask you to restart your computer for the change to take effect. The new name will appear the next time you log in.

Another way to find it: right-click the Start button, select System, and you'll land on the same About page. Both routes show the same information.

Finding your computer name on a Mac

Click the Apple menu in the top-left corner and select System Settings (or System Preferences on older Macs). Click General in the sidebar, then click the About button. The Computer Name field appears at the top of the window — that is your Mac's name.

You can also find it by clicking the Apple menu, selecting About This Mac, and looking at the window title. The name appears there as well. If you want to change it, go back to System Settings > General > About and click the Edit button next to the Computer Name field.

Finding your computer name in Linux

Open a terminal window (usually by right-clicking the desktop and selecting "Open Terminal" or by pressing Ctrl+Alt+T). Type the word hostname and press Enter. Your computer's name will appear on the next line.

If you want to change the name, you'll need to use the terminal as well. The steps vary depending on which Linux distribution you use, so check your system's documentation. Most modern Linux desktops also let you change the name through Settings > System, similar to Windows and Mac.

Where else your computer name appears

Your computer's name shows up in several other places if you know where to look. If you log into your home router's settings (usually by typing 192.168.1.1 or 192.168.0.1 into a web browser), you can see a list of all connected devices with their names. This is useful if you're trying to figure out which device is which on your network.

You'll also see your computer's name in network settings if you're sharing files or printers with other computers. On Windows, open File Explorer and look in the left sidebar under "Network" — your computer's name appears there. On a Mac, open Finder and click "Network" in the sidebar to see your computer listed among other devices.

Why your computer name matters for security

Your computer's name is part of how other devices identify and connect to yours. If you're sharing files or printers, other people on your network use your computer's name to find and access those resources. Keeping your computer name straightforward and memorable makes it easier to manage your own devices, but it doesn't expose sensitive information the way a password would.

If you're concerned about privacy on a shared network, you can change your computer's name to something generic or non-descriptive. For example, instead of "Sarah's Laptop", you might use "Workstation-1" or "Device-A". This makes it slightly harder for someone casually browsing the network to guess what kind of device you're using or who owns it.

What to do if you can't find your computer name

If the name field appears blank or shows only a string of numbers and letters, your computer may not have been given a custom name yet. Windows and Linux sometimes assign automatic names like "DESKTOP-XXXXXX" or "ubuntu-machine" if no one set a name during setup. This is normal and the computer will still work fine — you just have the option to change it to something more meaningful.

If you're on a work computer and the name is locked or you can't change it, your IT department may have restricted access to these settings. Contact them before trying to rename the device, as changing a work computer's name without permission can cause network connection problems.

Frequently Asked Questions

Is my computer name the same as my username?

No. Your username is the account you log into (like "Sarah" or "john.smith"), while your computer name is the label for the entire machine. You can have multiple user accounts on one computer, but the computer itself has only one name. You can see both by going to Settings > System > About on Windows.

Can I have spaces or special characters in my computer name?

Most operating systems allow spaces in computer names, but some older devices or printers may have trouble connecting if the name contains spaces or special characters. It's safest to use letters, numbers, and hyphens only. If you're having connection problems after renaming, try removing spaces and special characters.

What if two computers on my network have the same name?

This can cause confusion and connection problems. Each computer on a network should have a unique name so the system can tell them apart. If you discover a duplicate, rename one of them through Settings > System > About (Windows) or System Settings > General > About (Mac), then restart the computer.

Does changing my computer name affect my files or passwords?

No. Renaming your computer does not delete files, change passwords, or affect how your computer works. It only changes the label other devices use to find it on a network. You may need to restart your computer for the change to take effect, but all your data stays exactly where it is.

Can I see my computer name from another device?

Yes, if both devices are on the same network. On Windows, open File Explorer and click "Network" to see other computers. On a Mac, open Finder and click "Network". You'll see a list of computers on your network with their names displayed. This is how you know which device to connect to when sharing files or printers.