Mouse Tester
Test your mouse online in seconds — check every mouse button, run a mouse click test, verify your scroll wheel, and detect double-click issues. Measure CPS, track coordinates, and review click latency. No download required. Works on Windows, macOS, Linux, and ChromeOS.
Click anywhere in the test area to check your mouse buttons, CPS, and double-click detection.
Click History (empty)
Complete Mouse Test for Double Click, CPS & Button Issues
This online mouse tester lets you perform a full mouse test in seconds. Click any button to verify it registers, run a mouse click test to check for double-click defects, measure your CPS, and review the click history log for latency and chattering issues. Whether you need to test mouse buttons, check scroll wheel function, or run a quick mouse click speed test, this tool covers every scenario — all online, no download needed.
Understanding Your Mouse Test Results
The button lit up green when pressed and returned to idle when released. This button passed the mouse test and is functioning correctly.
The button didn't light up when pressed. It may be dead, have a broken microswitch, or there may be a driver issue.
A single physical click registered as two clicks within 80ms. This indicates a failing microswitch — the most common mouse hardware defect.
Your clicks-per-second rating. Average is 5-8 CPS. Competitive gamers may reach 10+ CPS with jitter or butterfly clicking techniques.
Why Use Our Online Mouse Test
Run a complete mouse button test — left, right, middle, and side buttons (MB4, MB5). Every button on your mouse is detected and visualized in real time.
Automatically flags clicks that register twice within 80ms — the #1 sign of a failing microswitch. No more guessing.
10-second mouse CPS test with real-time speed display, progress bar, and performance rating from "Slow" to "Pro Gamer". Perfect for mouse click speed test challenges.
Mouse scroll test that counts up-scrolls and down-scrolls separately. Verify your mouse wheel tester encoder is working in both directions.
Real-time X/Y coordinate display with total movement distance. A built-in mouse cursor test and mouse tracking test — useful for verifying mouse sensitivity and sensor smoothness.
Detailed log of your last 20 clicks with button name, interval, double-click flag, and timestamp. A thorough mouse input test for diagnosing latency, chattering, and mouse delay issues.
Runs on Windows, macOS, Linux, and ChromeOS. Works in Chrome, Edge, Firefox, Safari, and Opera.
All testing happens locally in your browser. No clicks, coordinates, or data are sent to any server.
No installation, no plugins, no signup. Just open this online mouse tester and start testing your mouse immediately — it works right in your browser.
After testing, get an AI-powered diagnostic summary with possible causes and recommended next steps — no more guessing what went wrong.
See a 0-100 health score and test coverage progress bar. Know exactly what percentage of the test you have completed and how healthy your device is.
Your test history is saved locally. When you test again, see if your device health improved or worsened — track wear and degradation over time.
Export your diagnostic report as PDF, copy a text summary, or generate a shareable URL. Perfect for warranty claims and tech support.
Supported Scenarios & Limitations
Quickly check whether Mouse Tester is the right tool for your needs. The lists below show exactly what this browser-based tool can and cannot do.
Works With
- Gaming mice (Razer, Logitech, Corsair, SteelSeries)
- Wireless mice (2.4GHz dongle)
- Bluetooth mice
- USB wired mice
- Office and ergonomic mice
- Vertical and trackball mice
- Silent click mice
- All standard buttons (Left, Right, Middle, MB4, MB5)
- Scroll wheel (up and down)
- Coordinate tracking & CPS testing
Not Supported
- Repair broken microswitches or sensors
- Update mouse drivers or firmware
- Measure physical DPI directly (hardware-level)
- Measure polling rate in Hz (hardware-level)
- Fix sensor hardware issues or replace mouse feet
- Test mice that are disconnected or powered off
Mouse Tester only verifies whether input events reach the browser. It cannot determine whether a failure is caused by hardware, drivers, firmware, or the operating system.
Common Mouse Problems You Can Detect with This Test
⚠ Double Clicking
The most common mouse defect. A single physical click registers as two separate clicks. Caused by degraded microswitch contacts. Our tool automatically detects this — look for red ⚠ markers in the click history and an increasing "Double Clicks" counter.
💀 Dead Buttons
Buttons that don't register at all when pressed. Usually caused by a broken microswitch, disconnected internal cable, or PCB damage. Test each button individually — if it doesn't light up green, it's dead.
🌀 Scroll Wheel Issues
Scroll wheel not registering, scrolling in the wrong direction, or jumping erratically. These are caused by a dirty or failing rotary encoder. Use the scroll test above — if the up/down counters don't increment correctly, your encoder needs cleaning or replacement.
⏱️ High Click Latency & Lag
Unusually long delay between clicks — a sign you may need a mouse latency test. Check the interval column in the click history log. While browser-based mouse input delay testing isn't a precise benchmark, consistently high intervals may indicate a driver issue, low polling rate, or wireless interference. A mouse lag test can help you identify whether the problem is the mouse or the system.
🔇 Side Buttons Not Working
MB4 and MB5 (back/forward buttons) not registering. Some browsers or operating systems may intercept side buttons for navigation. If they don't light up in our test, try testing in a different browser or checking your mouse driver software.
📉 Low Polling Rate / Hz Issues
If your mouse feels sluggish or unresponsive, it may have a low polling rate. A mouse polling rate test or mouse Hz test can help diagnose this. Most gaming mice operate at 500Hz or 1000Hz (1ms response time), while office mice may run at 125Hz (8ms). While our browser-based tool can't directly measure Hz, the click interval log can reveal patterns of delayed input. Check your mouse software (Razer Synapse, Logitech G HUB) to verify and adjust the polling rate.
🎯 Sensor & Tracking Problems
Cursor skipping, stuttering, or drifting on its own. Use the coordinate tracker as a mouse sensor test — move your mouse in straight lines and watch for jumps or irregularities. A mouse smoothness test like this can reveal sensor dust, worn mouse feet, or a dirty mousepad. For FPS gamers, a mouse tracking test is essential to ensure your aim isn't compromised by hardware issues.
CPS Test Guide: How Fast Can You Click?
CPS (Clicks Per Second) is a popular metric among gamers, especially in Minecraft PvP, Cookie Clicker, and other click-intensive games. Our 10-second mouse CPS test gives you an accurate measurement of your clicking speed. It doubles as a mouse speed test and mouse click speed test — perfect for competitive gamers who want to track their improvement.
Clicking Techniques
- Normal Clicking — Using your index finger to click normally. Averages 5-8 CPS. Safe and sustainable for long sessions.
- Jitter Clicking — Tensing your arm muscles to vibrate your finger rapidly. Can reach 10-14 CPS but causes hand strain and should not be done for extended periods.
- Butterfly Clicking — Alternating two fingers (usually index and middle) on the same button. Can reach 12-16 CPS. Some games and servers ban this technique.
- Drag Clicking — Dragging your finger across the button with friction. Can reach 20+ CPS but requires a mouse with the right switches and is banned in many competitive games.
CPS Rating Scale
Based on our 10-second test: 1-4 CPS is "Slow" (beginner), 5-7 CPS is "Average" (normal user), 8-11 CPS is "Fast" (experienced gamer), and 12+ CPS is "Pro Gamer" (competitive level).
Important Health Note
High-speed clicking techniques like jitter clicking can cause wrist strain, RSI (Repetitive Strain Injury), and carpal tunnel syndrome. Take frequent breaks, stretch your hands, and stop immediately if you feel pain. Normal clicking speed is perfectly adequate for everyday computing and most games.
CPS Test for Gaming
Many gamers use our mouse test game mode to practice clicking for competitive games. In Minecraft PvP, a higher CPS gives you an advantage in block-hitting and combo attacks. For FPS games, while CPS matters less than mouse accuracy test performance and mouse aim test precision, a reliable mouse with a good sensor is essential. If you're serious about FPS gaming, pair this CPS test with a mouse tracking test to verify your sensor is performing well — an fps mouse test can reveal tracking issues that affect your aim.
Mouse Types & Device Compatibility
Supported Mouse Types
Supported Operating Systems & Browsers
How Our Online Mouse Tester Works
Our mouse tester runs entirely in your web browser using the MouseEvent Web API. When you click a mouse button, the browser fires events that our tester listens to. This makes it a comprehensive mouse input test — every aspect of mouse testing happens locally in real time:
Mouse Events: mousedown and mouseup
When a mouse button is pressed, the browser fires a mousedown event with a button property indicating which button was pressed (0=Left, 1=Middle, 2=Right, 3=MB4, 4=MB5). When the button is released, a mouseup event fires. Our tester highlights the button green on mousedown and returns it to idle on mouseup. Holding a button down (mouse hold test) keeps it highlighted until release. Drag movements (mouse drag test) are tracked via the coordinate system. This mouse input tester captures every interaction your mouse sends to the browser.
Double Click Detection Algorithm
Our tool monitors the time interval between consecutive clicks on the same button. If two clicks occur within 80 milliseconds on the same button, it flags the second click as a potential double-click defect. This threshold is based on the observation that human double-clicks (intentional) typically have intervals of 100-500ms, while microswitch bouncing produces intervals of 0-50ms. The 80ms threshold catches defective switches while avoiding false positives.
CPS Calculation
During the 10-second CPS test, every mousedown event increments the click counter. The real-time CPS is calculated as clicks / elapsed_time. At the end of the test, the final CPS is total_clicks / 10. This gives a fair average that accounts for both burst speed and endurance.
Privacy & Security
This mouse tester is designed with privacy as the top priority. All mouse testing — button detection, CPS measurement, scroll wheel tracking, and coordinate logging — happens entirely in your browser using standard JavaScript MouseEvent APIs. No mouse clicks, coordinates, CPS scores, or any other data are transmitted to any server.
The tool does not require any account, login, or personal information. The click history log is stored only in your browser's memory (RAM) and is permanently deleted when you close or refresh the page. There is no backend database, no data collection, and no third-party data sharing.
You can verify this yourself by opening your browser's Developer Tools (F12) → Network tab. During testing, you will see no network requests related to your mouse activity.
Mouse Test FAQ
What is an online mouse tester and how do I use it? ▼
An online mouse tester is a browser-based tool that checks whether every mouse button, scroll wheel, and click response is working correctly. Simply click anywhere in the test area above — our tool detects left, right, middle, and side buttons (MB4, MB5) in real time. You can also run a CPS (clicks per second) test, verify your scroll wheel, track coordinates, and review a detailed click history log. No software download is required — the entire test runs in your web browser using the standard MouseEvent API.
How do I test all my mouse buttons and scroll wheel? ▼
Click each button on your mouse while looking at the visual mouse diagram above. Our tester detects Left (Button 0), Middle/Scroll Click (Button 1), Right (Button 2), and side buttons MB4 (Button 3) and MB5 (Button 4). Each button lights up green when pressed. To test the scroll wheel, simply scroll up and down over the test area — the scroll counters will increment separately for each direction. If a button doesn't light up, it may be broken or not supported by your browser.
Why is my mouse double clicking when I only click once? ▼
Double clicking is caused by a degraded microswitch inside the mouse. The metal contacts bounce when pressed, sending two signals instead of one. This is a hardware problem that worsens over time. Common causes include: (1) normal wear and tear after months/years of use, (2) dust or debris inside the switch, (3) moisture damage, or (4) manufacturing defects. Our tool automatically detects this — look for red ⚠ markers in the click history and an increasing "Double Clicks" counter. Some mice allow switch replacement; otherwise, you may need a new mouse.
Why is my mouse scroll wheel not scrolling properly? ▼
If the scroll counters don't increment correctly, or if scrolling feels erratic and jumps in the wrong direction, the rotary encoder inside your mouse is likely dirty or failing. This is a common hardware issue caused by dust accumulation or wear on the encoder contacts. Try blowing compressed air around the scroll wheel. If the problem persists, the encoder may need replacement. Note that some browsers or OS settings can also intercept scroll events — test in a different browser to rule out software issues.
Why are my mouse side buttons (MB4, MB5) not working? ▼
Side buttons (back/forward buttons) may not register because the browser or operating system intercepts them for navigation. Some browsers map MB4 to "back" and MB5 to "forward" in browser history. Try testing in a different browser — Chrome and Firefox generally pass side button events through to the page. If side buttons fail in all browsers, check your mouse driver software (Razer Synapse, Logitech G HUB) to ensure the buttons aren't remapped to macros or keyboard shortcuts. If they still don't register, the switches may be physically broken.
Why is my mouse cursor lagging or skipping? ▼
Cursor lag or skipping can be caused by: (1) a low polling rate (125Hz office mice vs 1000Hz gaming mice), (2) wireless interference or low battery in wireless mice, (3) a dirty mouse sensor or worn mouse feet, (4) high system CPU usage, or (5) browser extensions interfering with event processing. Use the coordinate tracker above — move your mouse in straight lines and watch for jumps. If the issue persists on a wired mouse with a clean sensor, try closing browser tabs and disabling extensions. For FPS gaming, a mouse tracking test like this is essential to verify sensor performance.
Can this mouse tester detect hardware damage? ▼
No. This tool only verifies whether mouse events reach the browser — it cannot determine the physical cause of a failure. If a button doesn't register, the problem could be a broken microswitch, a disconnected internal cable, PCB damage, or a driver issue, but our tool cannot tell you which one. What it can do is confirm which buttons are failing and whether double-click defects are present, helping you isolate the problem. For physical damage diagnosis, consult the manufacturer or a repair technician.
Can it fix a mouse that has double-click issues? ▼
No. This is a diagnostic tool, not a repair tool. It cannot clean microswitches, replace switches, or adjust debounce settings. What it can do is confirm the double-click defect exists and show you which buttons are affected. To fix double-clicking, you can try: (1) blowing compressed air into the switch, (2) increasing debounce delay in mouse driver software (Razer Synapse, Logitech G HUB), (3) soldering a replacement switch (usually Omron D2FC), or (4) contacting the manufacturer for warranty replacement.
Can it measure my mouse DPI or polling rate directly? ▼
No. Browsers cannot directly read mouse DPI (dots per inch) or polling rate (Hz) — these are hardware-level configurations controlled by your mouse driver software. Our coordinate tracker can serve as an indirect sensitivity test: move your mouse a fixed distance and compare on-screen movement. To find your exact DPI, check your mouse software (Razer Synapse, Logitech G HUB, Corsair iCUE). For polling rate, look for consistent input delays in the click history log, or use a dedicated hardware testing tool for a proper Hz test.
Can I test a gaming mouse? ▼
Absolutely. This tool is perfect for testing gaming mice from Razer, Logitech, Corsair, SteelSeries, Glorious, and other brands. You can verify all buttons (including side buttons), detect double-click issues (the most common gaming mouse defect), measure your CPS for competitive gaming, and test your scroll wheel. Gaming mice with extra buttons (MB4, MB5, and beyond) are fully supported.
Can I test a wireless or Bluetooth mouse? ▼
Yes. This tool works with any mouse that connects to your computer — USB wired, wireless with a dongle (2.4GHz), and Bluetooth mice are all fully supported. The browser receives mouse events regardless of the connection type. Wireless mice may have slightly higher latency than wired mice, which you might notice in the click interval column of the click history log. Logitech, Razer, SteelSeries, Corsair, and other wireless gaming mice work perfectly with this tester.
Can I test a Logitech, Razer, or Corsair mouse? ▼
Yes. This tool works with any mouse brand — Logitech (G Pro, G502, MX Master), Razer (DeathAdder, Viper, Basilisk), Corsair (Dark Core, Sabre), SteelSeries (Rival, Aerox), Glorious (Model O, Model D), and more. The tester detects mouse buttons by their standard button IDs, so it works regardless of the mouse brand, driver software, or customization layer. Even mice with custom macros or remapped buttons will work, as long as the buttons send standard mouse events to the browser.
Can I use this mouse tester on mobile? ▼
Yes, but with limitations. On mobile devices, touch events are translated to mouse events by the browser. You can tap to test "clicks" and the CPS test works. However, there is no right-click, middle-click, or scroll wheel on touchscreens. Multi-button testing requires a physical mouse connected via USB or Bluetooth. For the best experience, use a desktop or laptop computer with a real mouse.
Does this mouse tester work on Mac, Windows, and Linux? ▼
Yes, our mouse tester works on all operating systems — Windows, macOS, Linux, and ChromeOS — as long as you use a modern web browser (Chrome, Edge, Firefox, Safari, Opera). The test uses the standard browser MouseEvent API, which is universally supported. All mouse buttons, scroll wheel, and coordinate tracking work cross-platform without any configuration.
What is a good CPS score and what does it mean? ▼
CPS (Clicks Per Second) measures how fast you can click. Normal clicking averages 5-8 CPS, jitter clicking can reach 10-14 CPS, and butterfly clicking can reach 12-16 CPS. For everyday use, 5-8 CPS is perfectly fine. For Minecraft PvP, 8+ CPS is competitive. Drag clicking can reach 20+ CPS but is banned in many games. Extremely high CPS can cause wrist strain — take breaks and stop if you feel pain. Use our 10-second CPS test above to measure your score.
Does this mouse test collect my data? ▼
No. This tool is 100% privacy-friendly. All testing happens locally in your browser — no mouse clicks, coordinates, CPS scores, or any data are sent to any server. The click history is stored only in your browser's memory and is cleared when you close or refresh the page. You can verify this by checking your browser's network tab — no requests are made during testing.
Quick Summary
Mouse Tester is a free online mouse test tool that lets you test your mouse — verify every button, scroll wheel, and click response directly in your browser. It detects double-click defects, measures clicks per second (CPS), tracks coordinates, and logs click history. This online mouse tester also helps with mouse click tests, mouse scroll tests, and latency checks — all without installing any software. Your data never leaves your device.