If you're using Windows 10, right-click the Start menu and select Command Prompt. If you're using Windows 8, press ⊞ Win+X and select Command Prompt from the menu. This will display your network connection information. Your active connection may be labeled Wireless Network Connection, Ethernet adapter, or Local Area Connection. It may also be labeled by the manufacturer of your network adapter. Find your active connection and look for IPv4 Address.  The IP address is four sets of digits, with up to three digits per set. For example, it might look like 10.0.0.1  If you're on a local network behind a router (common when connected to Wi-Fi), this address may be internal only. See the "Finding Your Public IP Address Using Google" method to find out your public IP address. If you're behind a router, the router's local IP address is the one listed next to "Default Gateway."

Summary:
Open the Command Prompt. Type ipconfig and press ↵ Enter. Find your IP Address.