Every device connected to a network requires a unique identifier to send and receive data, and your computer is no exception. Locating this identifier, known as the Internet Protocol address, is a fundamental troubleshooting step for network issues, security audits, or configuring remote access. This guide provides clear, step-by-step instructions for finding your local and public IP addresses on Windows, macOS, and Linux systems.
Understanding the Difference Between Local and Public IPs
Before you begin the search, it is important to distinguish between two types of addresses. Your local IP, or private IP, is assigned by your router to identify your computer within your home or office network. This address is typically not visible directly on the internet. In contrast, your public IP is the address seen by websites and external services, assigned by your Internet Service Provider. The method to locate these two addresses varies, so understanding the distinction helps you find the correct one for your needs.
Finding Your Local IP Address on Windows
The Command Prompt provides the quickest way to retrieve your local address on a Windows machine. This method works across most versions of Windows, from older iterations to the latest releases. You will use a specific command that queries the operating system for its network configuration details.
Using Command Prompt
Press Windows Key + R , type cmd , and press Enter to open the Command Prompt.
Type the command ipconfig and press Enter.
Look for the section labeled "Ethernet adapter" or "Wireless LAN adapter."
The number listed next to "IPv4 Address" is your local IP address, usually formatted as 192.168.x.x or 10.0.x.x.
Finding Your Local IP Address on macOS and Linux
Mac and Linux users rely on the Terminal application to access the same networking information available in Windows command lines. The process is streamlined and requires only a single line of text input. This interface provides direct access to the system’s kernel networking data.
Using Terminal
Open the Terminal application, found in Applications/Utilities on macOS or within your applications menu on Linux.
Type the command ifconfig and press Enter.
(On some modern Linux distributions, you may need to use ip addr if ifconfig is not installed.)
Look for the "inet" address listed under the network interface name, such as "en0" for Wi-Fi or "eth0" for a wired connection.
This string of numbers is your local IP address.
Identifying Your Public IP Address
Your public IP address is the outward-facing identity of your network. While local addresses handle internal communication, the public address handles all external traffic. Finding this requires querying an external server, as your router manages the translation between the two.
Using a Web Browser
The easiest way to find your public IP is to visit any reputable "what is my ip" website. These sites display the information instantly without requiring any downloads. Simply open your preferred browser, search for "What is my IP," and the search result or a dedicated site will show your public address at the top of the page. This method is universal and works on any operating system with a browser.
