Test every button, the scroll wheel, click speed, double-click faults and polling rate.
Click, scroll or press any mouse button inside this area.
Right-click menu is disabled here.
A double-click fault is flagged when the same button registers twice within 60 ms, a common sign of a worn switch. Polling rate is estimated from browser events and may be capped by your screen refresh rate.
Free mouse tester online tools save you from guessing whether your mouse is really the problem. A click that sometimes doesn't register, a scroll wheel that jumps around, a cursor that stutters at the worst possible moment: these faults are annoying, and they're hard to pin down by feel alone. Open the tool at the top of this page, press your buttons, and see how your mouse responds. It shows every button press, counts your clicks, flags double-click faults, measures click speed, and estimates your polling rate. It runs in your browser, so there's nothing to download and no account to create.
Whether you use a wired office mouse, a wireless one, a gaming mouse, or a laptop trackpad, this page will help you test it, understand what you're seeing, and fix the most common problems.
Quick heads-up: a browser-based test shows what your computer is sending to the page. If a button looks dead here, it might be the mouse itself, the connection, or a setting on your system, and the troubleshooting section below will help you tell which.
You don't need any technical knowledge. Here's the general process:
Take your time with it. A fault that shows up one time in ten is easy to miss during a quick test, so it's worth pressing a suspicious button more than once. Note that the right-click menu is switched off inside the test area, and the scroll wheel scrolls the tool rather than the page while your cursor is over it, so you can test those inputs without leaving the page.
The tool shows everything at once, so you don't need to switch between modes. Here's what each part tells you:
The on-screen mouse lights up the left, right, middle, back and forward buttons and the scroll wheel as you use them. The Active buttons box shows which buttons are held down right now, including combinations such as Left + Right.
Separate counters track how many times you've pressed Left, Right, Middle, Back and Forward, and how many times you've scrolled up and down. These make it easy to see whether every press you made was actually recorded.
Last action shows the most recent thing your mouse did, such as a button press or a scroll. The event log below keeps a timestamped list of your most recent actions, so you can look back over what happened.
The tool flags a double-click fault when the same button registers two presses within 60 milliseconds, which is faster than a person can click on purpose. A fault is a common sign of a worn switch that is "bouncing", and the counter turns red when one is found.
CPS means clicks per second. Live CPS shows how many clicks you've made in the last second, and Max CPS keeps your highest value since the last reset.
Choose 5, 10 or 30 seconds, press Start test, and begin clicking inside the test area. The timer starts on your first click, and the tool shows your average clicks per second when time runs out.
Cursor X and Cursor Y show where your pointer is, measured from the corner of the tool rather than your whole screen. Speed shows how fast the pointer is moving in pixels per second.
Polling rate is how many times per second your mouse reports its position to your computer, measured in Hz. Many office mice report at around 125 Hz, while gaming mice often reach 500 Hz or 1000 Hz. The tool estimates this from the movement events your browser receives while you move the mouse, so keep moving it and the figure will update. Because it's an estimate, it can read lower than the mouse's rated figure, since browsers and screen refresh rates can limit how often movement is reported.
Use the button at the top of the tool to switch between light and dark themes.
A mouse test won't measure every technical detail of your hardware, but it does answer the questions most people actually have.
This is the main check. If a button doesn't react in the test, you know the problem is real and not just in one particular app or game.
Some mice have a worn switch that fails only now and then. Pressing each button several times, and comparing the counters with the number of presses you made, helps you notice a click that occasionally doesn't register.
If one press registers as two, the double-click fault counter will show it. This is one of the most common signs that a mouse switch is wearing out.
A scroll wheel that skips, jumps in the wrong direction, or feels inconsistent is one of the most common mouse complaints. Scrolling slowly and quickly in both directions and watching the Scroll up and Scroll down counters helps you spot it.
If your mouse has back and forward buttons, pressing them shows whether your computer sees them at all. Some extra buttons rely on manufacturer software to do anything useful, and the tool only shows the standard left, right, middle, back and forward buttons, so what you see depends on your setup.
Moving the mouse around the test area lets you check the cursor position, speed and estimated polling rate, and notice stuttering, freezing, or a cursor that drifts on its own. Try a few different surfaces if you can, because a mouse pad or a glossy desk often makes tracking worse.
A mouse is easy to take for granted until it starts misbehaving. Checking it now and then, or right when something feels off, gives you a clear answer quickly.
If the test shows a problem, don't rush to replace the mouse. Many faults are simple to fix. Work through these in order.
Make sure the mouse is plugged in firmly or, for a wireless model, that the batteries are fresh and the receiver is seated properly. Low battery power is a surprisingly common cause of stuttering cursors and dropped clicks.
Plug the mouse directly into your computer instead of a hub, and try another port. For Bluetooth mice, remove the device from your system's list and pair it again from scratch.
Dust and grime around the sensor can make the cursor jump or lag. Wipe the sensor lens gently with a dry cloth, and try a clean, matte surface or a proper mouse mat.
Both Windows and macOS let you adjust pointer speed, primary button, and scroll direction. If clicks or scrolling feel wrong, one of these settings may have changed. Open your system's mouse settings and look them over.
Gaming mice in particular often depend on manufacturer software for extra buttons, profiles and polling rate settings. Make sure that software is up to date, or reinstall it if buttons stopped responding.
If the same fault appears on a second device, the mouse itself is almost certainly at fault. If it works perfectly there, the problem sits with the first computer's settings or drivers.
It's basic advice because it works. A restart clears stuck drivers and background processes that can interfere with input devices.
Different mouse problems show up in different ways, and this tool covers the main ones in one place. The button counters and the double-click fault counter help you spot a switch that registers two clicks when you only pressed once, the Live CPS, Max CPS and click speed test show how fast you can click, and the scroll counters show how the wheel responds in each direction. If you'd like a closer look at one of these on its own page, try our double click test, the mouse click counter, or the mouse scroll test.
Keep in mind that a few of these faults, like unwanted double-clicks, usually come from a worn switch inside the mouse. A test can show you the symptom, but it can't repair the hardware.
When you click, scroll, or move your mouse over a web page, the browser turns that action into an event that the page can read. If you're curious how this works under the hood, MDN explains it clearly in its documentation on the MouseEvent interface, and covers scrolling separately in its guide to the wheel event.
A browser only reports what it receives from your system. That's why an extra button that needs special software might do nothing in a browser test, even though it works in a game or an app. It's also why the polling rate shown here is an estimate rather than an exact reading of your mouse hardware.
A mouse test only needs to see where you click, scroll and move on the page, which is the same kind of input any website can see when you visit it. It doesn't need access to your microphone or camera, and your browser won't ask for special permissions to run it. As with any website, you can read the site's privacy policy if you'd like specifics on what data, if any, is collected during your visit.
Yes. It's free to use, and you don't need to create an account.
No. The test runs in your browser, so you can open the page and start straight away.
Yes. As long as your wireless mouse is connected and working with your computer, the browser can see its clicks and scrolling like any other mouse.
Generally yes. Most trackpads act like a mouse in the browser, so you can check clicks, taps and scrolling. Gestures specific to your laptop may not show up.
It's when a single physical press registers as two clicks. Our tool flags it when the same button registers twice within 60 milliseconds, which is too fast for a person to do on purpose. It's usually a sign of a worn switch inside the mouse.
Choose 5, 10 or 30 seconds and press Start test. The timer starts on your first click inside the test area, and when time runs out the tool shows your result in clicks per second along with the total number of clicks.
Polling rate is how often your mouse reports its position to your computer, measured in Hz. The tool estimates it from the movement events your browser receives, so you need to keep moving the mouse for it to update. The reading is an estimate, and it can be lower than your mouse's rated polling rate because of browser and screen refresh rate limits.
Inside the test area, the scroll wheel is used for testing instead of scrolling the page, so you can see the Scroll up and Scroll down counters respond. Move your cursor outside the area to scroll the page as normal. The right-click menu is switched off in the same area for the same reason.
Some extra buttons only work through the manufacturer's software. If your browser doesn't receive a signal from the button, the page has nothing to display. Check whether the button needs software or settings to be assigned a function.
An occasional missed click often points to a worn switch, a low battery, or a poor connection. Try the fixes above first, then test on another computer to see if the fault follows the mouse.
It can show you symptoms, like a button that doesn't register or a wheel that misbehaves, but it can't diagnose hardware damage for certain. If the same problem appears on more than one computer, the mouse is the likely culprit.
Mouse testing is meant for devices that have a mouse or trackpad. On a touchscreen, you'll only be testing touch input, so a computer is the better choice.
If your mouse passes, it's worth making sure the rest of your gear is in good shape as well. You can check your typing hardware with our keyboard tester, or browse every free tool on the MechKeyTest homepage.
Ready to find out how your mouse is really performing? Head back to the top of the page and run the free mouse tester online now.