What is My Browser

What Is My Browser? Instantly Detect Your Browser, Version, and Device Details

If you have ever asked "what is my browser", this free tool gives you a clear, instant answer the moment the page loads. The What Is My Browser tool reads the information your browser already shares with every website you visit and presents it back to you in plain English: the browser name (Chrome, Firefox, Safari, Edge, Opera, Brave, Samsung Internet and more), the exact version number, the operating system you are running, your screen and browser window size, your user agent string, and other technical details that normally stay hidden. There is nothing to install, nothing to sign up for, and no waiting. You open the page and your details appear automatically.

This tool is for anyone who needs to know what browser am I using without digging through confusing menu settings. That includes everyday users troubleshooting a website that will not load, support agents who need a customer to confirm their setup, developers testing how a site behaves across devices, teachers and students checking compatibility before an online exam, and IT staff verifying that a machine meets minimum software requirements. Whether you are on a desktop, a laptop, an iPhone, an Android phone, a tablet, or even a Kindle Fire, the tool detects your environment and shows you exactly what the wider internet sees when you connect. Below we explain how to use it, what every detail means, and how to put that information to work.

How to Find Out What Browser You Are Using

You do not need any technical knowledge to use this tool. The detection happens the instant the page opens, but here is the simple step-by-step so you know exactly what to expect and where to look.

1. Open the What Is My Browser tool in the browser you want to check. This is important: the tool reports on whatever browser is currently displaying the page, so if you want to know about a specific app, open the tool inside that app.
2. Read the headline result at the top of the page. It states your browser name and version in a single sentence, such as "You are using Chrome 124 on Windows 10." This is the fastest answer to the question what is my browser version.
3. Scroll down to the detailed panel to see the full breakdown: operating system, device type, screen resolution, browser window (viewport) size, language, and whether cookies and JavaScript are enabled.
4. Find your user agent string in the dedicated field. This is the raw line of text your browser sends to every server. You can copy it with one tap if a support team or developer asks for it.
5. Copy any value you need using the copy buttons, then paste it into a support ticket, a bug report, or a compatibility checklist.
6. Refresh the page after updating your browser or rotating your device to confirm the new details, such as a changed version number or a different screen orientation.

That is the entire process. Because everything runs the moment the page loads, checking what is my browser on my computer takes only a couple of seconds, and you can repeat it as often as you like at no cost.

Why Use the What Is My Browser Tool

Knowing your browser details sounds trivial until you hit a problem that depends on them. Here are concrete, real-world situations where this tool saves time and frustration.

• Troubleshooting a broken website. Many sites only support recent browser versions. If a page looks broken or a button will not click, checking what is my browser version tells you instantly whether you are running something outdated that needs updating.
• Filing a clear support ticket. Support teams almost always ask "which browser and version are you using?" Instead of guessing, you copy the exact details and your browser user agent, so the team can reproduce your issue on the first try.
• Confirming compatibility before an online exam or video call. Proctoring platforms and conferencing tools list supported browsers. A quick check confirms you meet the requirement before the session starts, not after it fails.
• Web developers and QA testers use the tool to confirm which engine and version a device reports, and to grab the user agent for testing responsive layouts and feature support across Chrome, Safari, Firefox, and Edge.
• Verifying your browser on a borrowed or public device. On a library computer, a hotel kiosk, or a friend's laptop, you can quickly see what browser am I using on this computer before logging into anything sensitive.
• Checking mobile browsers. It is not always obvious whether your phone is using Safari, Chrome, Samsung Internet, or an in-app browser. The tool clears it up, answering what browser am I using on my Android phone or on an iPhone in one glance.
• Confirming screen and viewport size for design work, so you know the resolution your browser is actually rendering at, which is exactly what is my browser size and what is my browser resolution refer to.

What Each Detail Means: Browser, Version, User Agent, and More

The tool reports several distinct values. They are related but measure different things, and understanding the difference helps you act on the results.

Browser name and version

The browser name identifies the application itself: Google Chrome, Mozilla Firefox, Apple Safari, Microsoft Edge, Opera, Brave, Vivaldi, or a mobile browser like Samsung Internet. The version number tells you which release you are running, for example Chrome 124 or Firefox 125. Version matters more than most people realise, because security patches and new web features arrive with each release. When someone asks what is my browser version, they usually need it to confirm they are current or to match a site's minimum requirement.

User agent string

The user agent is a single line of text your browser automatically sends to every website. It packs together the browser, its version, the rendering engine, and the operating system into one machine-readable string. A typical Chrome-on-Windows user agent looks like Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36. It looks cryptic, but every part has meaning. Servers read it to decide which version of a page to send you. When a developer asks for your browser user agent, this exact string is what they want, and the tool lets you copy it without retyping a single character.

Operating system and device type

Beyond the browser, the tool detects the platform underneath it: Windows 10 or 11, macOS, ChromeOS, Android, iOS or iPadOS, or Linux. It also infers whether you are on a desktop, a phone, or a tablet. This matters because the same browser behaves differently across platforms, and many download buttons and help articles are tailored to your OS.

Screen resolution versus browser window size

People often confuse these two numbers, but they answer different questions. Your screen resolution is the total pixel dimension of your physical display, such as 1920 by 1080. Your browser window (viewport) size is the area actually available to render the web page, which is smaller because it excludes toolbars, tabs, and any window that is not maximised. When you wonder what is my browser size versus what is my browser resolution, this is the distinction: resolution is the whole screen, viewport is the usable web canvas. Responsive websites react to the viewport, so designers care about that number most.

How Browser Detection Actually Works

Understanding where these details come from helps you trust the result and know its limits. When your browser requests any web page, it includes a set of headers in that request. The most relevant is the user agent header. Modern browsers also expose JavaScript properties such as navigator.userAgent, navigator.language, navigator.platform, screen.width, and window.innerWidth. This tool reads those standard, publicly available values that your browser already broadcasts and translates them into friendly labels.

Because the detection relies on what the browser reports, there are a few honest caveats. Some privacy-focused browsers and extensions deliberately alter or "spoof" the user agent to look like a different browser. In those cases the tool faithfully shows what your browser claims, which is the same thing every website sees, so it remains useful even when the value is intentionally generic. Likewise, browser makers have been simplifying user agent strings over time to reduce fingerprinting, so very precise version numbers may be rounded on some browsers. The tool uses additional signals where available to keep the answer to what is my browser as accurate as possible.

Why the same site can look different to two people

Because servers read your user agent and viewport, two visitors can receive different layouts of the same address. A phone gets the mobile layout; a desktop gets the full version. If a colleague sees a feature you cannot, comparing your browser details side by side often reveals why, usually an outdated version or a different platform.

Checking Your Browser on Mobile: iPhone, Android, and Tablets

Mobile browsing adds a twist, because apps frequently open links inside their own built-in browser rather than your default one. Tapping a link in a messaging app, a social feed, or an email might launch an in-app web view that is not Safari or Chrome at all. That is why people search what browser am I using on this device and get confused by the answer.

On iPhone and iPad

Open the tool in the browser you want to verify. If you opened it from Safari, it will report Safari on iOS. Note that on iPhones, many third-party browsers historically used the same underlying engine as Safari, so the reported engine may look similar even in Chrome or Firefox for iOS. The browser name in the result still tells you which app you are in, which answers what browser am I using on iPhone.

On Android

Android offers more variety: Chrome, Samsung Internet, Firefox, Brave, Opera, and others all run their own engines. Open the tool in the app you want to check and read the headline result to confirm what browser am I using on my Android phone. If you opened the tool from inside another app and the name looks unfamiliar, you are likely in that app's in-app browser; choose "Open in browser" from the app's menu to switch to your real default.

On tablets and e-readers

Tablets and devices like the Kindle Fire report their own browser, often Silk on Amazon devices. The tool handles these the same way, detecting the app and platform so you always know your environment, even on less common hardware.

Finding and Changing Your Default Browser

A common follow-up to "what is my browser" is figuring out which browser opens links automatically. The tool tells you which browser you are currently in, and confirming that is the first step to deciding whether you want to change your default.

How to see what your default browser is

On Windows, open Settings, go to Apps, then Default apps, and look for the web browser entry. On a Mac, open System Settings, choose Desktop and Dock (or General on older versions), and find the default web browser dropdown. On Android, open Settings, then Apps, then Default apps, then Browser app. On iPhone, open Settings, scroll to your browser app, and check the "Default Browser App" option. The What Is My Browser tool complements these by confirming, in real time, which browser actually rendered a page, so you can verify that your default setting is behaving the way you expect.

Privacy and Security: What the Tool Sees and What It Does Not

It is fair to be cautious about any page that reads device information, so here is a transparent explanation. The What Is My Browser tool only displays the standard details your browser already shares with every website you visit; it does not extract anything hidden or private. It does not read your files, your browsing history, your passwords, or the contents of other tabs. The detection runs in your own browser to present the result back to you, and the tool is completely free with no sign-up required.

Seeing how much your browser reveals can itself be a privacy lesson. Your user agent, language, screen size, and similar signals can be combined by advertisers into a "browser fingerprint" that helps identify your device across sites. People search what is my browser fingerprint precisely because they want to understand this exposure. By showing you these values plainly, the tool helps you appreciate what is shared and decide whether to use privacy features like a tracker blocker or a browser that minimises fingerprinting. Note that this tool focuses on browser and device details rather than network location; questions like what is my browser IP or what is my browser location relate to your network connection, which is a separate topic from the software details shown here.

Tips for Getting the Most Accurate Result

A few small habits make your check faster and more reliable, especially when you are reporting details to someone else.

• Always open the tool in the exact browser you want to check. Copying a link into a different app will report that app instead.
• Maximise the window before reading the viewport size if you want your browser size to match your full screen resolution.
• Update your browser, then refresh the tool to confirm the new version number actually took effect.
• Use the copy buttons rather than retyping the user agent; a single wrong character can send a developer down the wrong path.
• Disable user-agent-changing extensions temporarily if you need the true, unmodified value.
• Check on each device separately when a problem only happens on one of them, since the browser and version often differ between your phone and your computer.

Tips and Troubleshooting

The tool shows a different browser than I expected. Why?

You are almost certainly viewing the tool inside an in-app browser. Apps like social and messaging clients open links in a built-in web view. Use the app's menu to "Open in browser," then run the tool again to see your real default browser.

My version number looks shorter or rounded. Is that a bug?

No. Several browsers now report a simplified user agent to reduce tracking, which can round the minor version. The major version shown is still accurate and is what matters for most compatibility checks.

The browser name says Safari even though I opened Chrome on my iPhone.

On iOS, third-party browsers have traditionally relied on Apple's web engine, so engine references to Safari can appear. The browser application name in the headline result still identifies the app you are actually using.

My screen resolution and browser size do not match.

That is expected. Resolution is your full display; browser size is only the visible web area, which is smaller because of toolbars and any non-maximised window. Maximise the window to bring the two numbers closer.

The details did not update after I updated my browser.

Refresh the page or close and reopen the tab. Detection happens on load, so a stale page can still show the old version until you reload it.

Can I use this on a work computer with restrictions?

Yes. The tool is a normal web page that reads standard browser values, so it works on locked-down machines without installing anything, which is ideal for confirming what is my browser for Windows 10 on a managed device.

Related Tools

If you found the What Is My Browser tool useful, these other free utilities on Tools Hub pair well with it for everyday checks and quick fixes:

• What Is My IP — see the public IP address your network connection is using, the companion to your browser details.
• What Is My Screen Resolution — get a dedicated, detailed read of your display and viewport dimensions.
• User Agent Parser — paste any user agent string and break it down into browser, engine, version, and OS.
• Internet Speed Test — measure your download and upload speed when a site feels slow, ruling out the connection before the browser.
• Cookie and JavaScript Checker — confirm whether cookies and scripts are enabled, which many sites require to function.
• Word Counter — a handy free text utility for everyday writing and editing tasks.

Frequently Asked Questions

Is the What Is My Browser tool free?

Yes, it is completely free with no sign-up, no payment, and no watermark of any kind. You can use it as many times as you want, on as many devices as you want, at no cost.

Do I need to install anything or create an account?

No. The tool runs entirely in your web browser. There is no software to download and no account to register. Just open the page and your browser details appear automatically.

How accurate is the browser detection?

The tool reports exactly what your browser shares with every website, so it reflects what the wider internet sees. The main reason a value might look generic is if a privacy extension or a browser maker has deliberately simplified the user agent, in which case the tool honestly shows that same value.

What is a user agent string and why would I need it?

A user agent is the line of text your browser sends to identify itself, bundling the browser, version, engine, and operating system. Support teams and developers frequently request it to reproduce an issue. The tool displays it with a one-tap copy button so you never have to type it by hand.

Can I check what browser I am using on my phone?

Yes. Open the tool in the mobile browser you want to verify and read the headline result. It works for Safari on iPhone, Chrome and Samsung Internet on Android, tablet browsers, and even e-reader browsers, answering what browser am I using on this device clearly.

Does the tool collect or store my personal data?

The tool only displays the standard, public details your browser already broadcasts to every site. It does not read your files, history, passwords, or other tabs, and it does not require any personal information to work.

Why does a website tell me my browser is unsupported when it looks current?

Usually the site checks for a minimum version, and your browser may be a release or two behind, or an extension may be altering your user agent. Use the tool to confirm what is my browser version, then update if needed or temporarily disable user-agent-changing extensions.

What is the difference between my browser and my default browser?

Your browser is whichever app is open right now; your default browser is the one your device uses to open links automatically. The tool reports the browser currently displaying the page, which helps you verify whether your default setting is behaving as expected.

Will the tool work on older systems like Windows 10?

Yes. It is a lightweight web page that reads standard browser values, so it runs on older operating systems and managed work machines without any installation, making it a reliable way to check what is my browser for Windows 10.