What Operating System Do I Have
See your browser name and version, operating system, rendering engine and full user agent string the moment the page loads — detected locally.
Result
This page leads with your operating system: the name your browser reports — Windows, macOS, Linux, Android, iOS, iPadOS or ChromeOS — plus the version where the browser actually discloses one. The full browser breakdown, user agent string and display details stay available right below.
Knowing the exact OS matters when you download software, follow a troubleshooting guide or file a compatibility bug. Browsers, however, hide more than people expect: Windows 11 still identifies itself as NT 10.0, so it cannot be told apart from Windows 10 by a web page, and current macOS versions are frozen at an old number in the user agent. Where that is the case this tool says Windows 10/11 or plain macOS instead of pretending to know more.
Detection happens entirely on your device, using navigator.userAgentData where available and a careful reading of the user agent string otherwise — including the classic trap of an iPad presenting itself as a Mac, which is caught via its touch screen. No IP geolocation, no fingerprinting, no data sent anywhere.