What Is My User Agent?

Your user agent is the line of text your browser sends to every website it opens. It names the browser, its version and the operating system. Here is yours, and how to read it.

What Is My User Agent?

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36

Browser:

Device

216.73.216.241

Plattform:

Unknown operating system

JavaScript:

Enabled

Cookies:

Enabled

Time Zone:

-3 hours

What is my IP Address?

IP Address:

216.73.216.241

Your location:

United States, El Monte

Updated October 8, 2026

How to read a user agent string

A typical Chrome user agent on Windows looks like this:

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36

Mozilla/5.0 — a historical token almost every browser sends for compatibility; it means nothing today.
(Windows NT 10.0; Win64; x64) — the operating system and processor type.
AppleWebKit/537.36 (KHTML, like Gecko) — the rendering engine family, again partly kept for compatibility.
Chrome/140.0.0.0 — the actual browser and its major version.
Safari/537.36 — another compatibility token.

Why the details look wrong

To reduce tracking, Chrome, Edge and other Chromium browsers now send a reduced user agent: the version is cut to the major number (140.0.0.0), and the operating system version is frozen. That is why Windows 11 appears as “Windows NT 10.0” and recent Android phones show a generic model. Safari on Mac likewise reports an older macOS version. Websites that need exact details ask the browser separately through “client hints”.

What websites use it for

choosing the mobile or desktop layout and the right download for your system;
working around bugs in specific browsers;
statistics — which browsers and systems visitors use;
spotting bots: search engines identify themselves with their own user agents, such as Googlebot.

How to change your user agent

In Chrome or Edge, open Developer Tools (F12), then the menu ⋮ → More tools → Network conditions, untick “Use browser default” and choose another one. Firefox and Safari have similar options in their developer settings. The change lasts only while the tools are open, which is useful for testing how a site looks on a phone. Changing the user agent does not hide your IP address.

User agent: frequently asked questions

Why does my Windows 11 computer show Windows NT 10.0?

Browsers freeze the Windows version in the user agent at 10.0 to reduce tracking. Windows 11 is reported correctly only through client hints.

Can a website identify me by my user agent?

Not on its own — millions of people share the same one. Combined with other details it can contribute to browser fingerprinting.

Is my user agent the same on every site?

Yes, the browser sends the same string everywhere, unless an extension or developer tools change it.

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