What an IP address is and why you need it

Your PC's IP address is a set of numbers that identifies your computer on your home network — something like 192.168.1.5. When you set up a find network, you often need this number to log into your router, assign static addresses to devices, or troubleshoot why something isn't connecting. Every device on your network has one, and finding yours takes less than a minute.

The address you see depends on which network you're on. Your home network IP (called a local or private IP) is different from the address your internet service provider assigns to your whole house. This guide covers finding the local IP on your home network, which is what you need for most setup tasks.

Key Takeaways

  • On Windows, open Command Prompt and type ipconfig to see your IP address listed as "IPv4 Address" under your network adapter.
  • On Mac, go to System Settings, click Network, select your connection, and look for the IP address shown on the right side.
  • Your IP address usually starts with 192.168 or 10.0 and changes only when you restart your computer or your router reassigns it.
  • If you see 169.254 instead, your PC isn't connected to the network properly and needs troubleshooting before you proceed.

Finding your IP address on Windows

The fastest way on Windows is through Command Prompt. Press the Windows key, type cmd, and press Enter. A black window opens — this is Command Prompt.

Type ipconfig and press Enter. You'll see a list of information. Look for the section labeled with your network adapter name (usually "Ethernet" if you're plugged in with a cable, or "Wireless LAN adapter" if you're on Wi-Fi). Under that section, find the line that says IPv4 Address. The number next to it — something like 192.168.1.105 — is your local IP address. Write it down or take a screenshot.

If you see multiple network adapters listed, look for the one that shows an IPv4 address starting with 192.168 or 10.0. Adapters that show 169.254 are not properly connected to your network.

Finding your IP address on Mac

On Mac, the process uses the graphical settings instead of a command line. Click the Apple menu in the top-left corner, then select System Settings (or System Preferences on older versions).

In the sidebar, click Network. You'll see a list of connections on the left — select the one you're currently using (usually Wi-Fi or Ethernet). On the right side of the window, look for a section that shows your connection details. Your IP Address appears there as a set of four numbers separated by periods, like 192.168.1.42.

If you don't see an IP address listed, or if it starts with 169.254, your Mac isn't connected to the network properly. Disconnect and reconnect to your Wi-Fi, or unplug and replug your ethernet cable, then check again.

Understanding what the numbers mean

Your home network IP address almost always starts with 192.168 or 10.0. These ranges are reserved for private networks — they're not used on the public internet. The numbers after that identify your specific computer on your home network.

The last number (called the host portion) is what usually changes between devices. Your phone might be 192.168.1.50, your printer 192.168.1.100, and your PC 192.168.1.105. Your router itself is typically 192.168.1.1 or 192.168.1.254. If you see an address starting with anything else — like 10.0 or 172.16 — it's still a private address, just on a different network range.

If your address starts with 169.254, your computer tried to assign itself an address because it couldn't reach the router. This means the connection isn't working and needs to be fixed before you proceed with network setup.

Why your IP address might change

Your router assigns IP addresses automatically through a system called DHCP. Most home routers do this by default, which means your PC might get a different address each time it connects. For most everyday use, this doesn't matter. But if you're setting up port forwarding, accessing your PC remotely, or configuring network storage, a changing address becomes a problem.

If you need your IP address to stay the same, you have two options. The first is to set a static IP address on your PC itself, which tells your computer to always use the same number. The second is to create a DHCP reservation in your router settings, which tells the router to always give that computer the same address. Both approaches require accessing your router's settings, which is a separate process from finding your current address.

What to do if you can't find your IP address

If you ran ipconfig on Windows or checked Network settings on Mac and didn't see an IPv4 address, or if you see 169.254, your computer isn't connected to the network. Start by checking the physical connection: if you're using ethernet, make sure the cable is plugged in on both ends. If you're on Wi-Fi, make sure you're connected to your network name and that you entered the password correctly.

Restart your computer and check again. Sometimes a device needs a moment to get a fresh address from the router. If you still don't see an address starting with 192.168 or 10.0, restart your router as well — unplug it for 30 seconds, plug it back in, and wait two minutes for it to fully start up. Then check your PC again.

If you've done all that and still see no address or a 169.254 address, there may be a problem with your network adapter or router. At that point, you'll need to troubleshoot the connection itself before you can proceed with any network configuration.

Using your IP address for network setup

Once you have your IP address, you can use it for several common tasks. To log into your router and change its settings, you typically open a web browser and type your router's IP address (usually 192.168.1.1 or 192.168.0.1) into the address bar. Your PC's address is different — you don't type it into a browser.

If you're setting up a static IP or DHCP reservation so your address doesn't change, you'll need this number. You'll also need it if you're configuring network storage, setting up remote access, or troubleshooting why a device can't reach your PC. Keep a note of it somewhere you can find it again, since you may need to reference it later.

Frequently Asked Questions

Is my IP address the same as my internet address?

No. Your local IP address (192.168.1.x) is only used on your home network. Your internet address is assigned by your internet service provider to your whole house and is what websites see when you browse. You can find your internet address by searching "what is my IP" in a web browser, but that's a different number from what you need for home network setup.

Can someone see my IP address and hack me?

Your local IP address (the 192.168 one) is only visible to other devices on your home network. It's not exposed to the internet. The internet address your ISP assigns is visible to websites, but that's normal and expected. Neither one directly allows someone to hack your computer — that requires other vulnerabilities. Securing your router password and keeping your devices updated are more important for safety.

Why do I see two different IP addresses when I run ipconfig?

You likely have both ethernet and Wi-Fi adapters on your PC, even if you're only using one. Each adapter gets its own address. Look for the adapter you're actually using — if you're plugged in with a cable, use the ethernet address; if you're on Wi-Fi, use the wireless adapter address. Ignore the others.

What if my IP address starts with 10.0 instead of 192.168?

Both 192.168 and 10.0 are valid private IP ranges. Some routers use 10.0 instead of 192.168 — it's just a different configuration. Your address is still correct and works the same way. The important thing is that it doesn't start with 169.254 (which means no connection) or a public internet address.

Do I need to write down my IP address?

You should note it if you're about to set up port forwarding, static IP, or remote access. For most everyday tasks, you don't need to remember it — you can look it up again anytime by running ipconfig or checking Network settings. But if you're in the middle of configuring your router, keeping it visible on a second device or on paper saves time.