How to Check What Operating System I Have: A Complete Step-by-Step Guide

Have you ever tried installing software, troubleshooting a device, or seeking tech support—only to be asked, “What operating system are you using?”

If you’ve ever paused before answering, you’re not alone. Many users aren’t sure whether they’re on Windows 10, macOS Ventura, Android, or something else entirely. Yet, knowing how to check what operating system you have is crucial for security, compatibility, and performance.

In this guide, you’ll learn how to identify your operating system across all major platforms—Windows, macOS, Linux, Android, and iOS—with simple, clear steps. Whether you’re a cybersecurity professional, IT manager, or casual user, this tutorial ensures you always know your system details when it matters most.

What Is an Operating System (OS)?

An Operating System (OS) is the core software that manages your device’s hardware and applications. It acts as a bridge between you and your ...