Mouse Click Test
A free mouse click test that counts every press of your left, right, middle and side buttons and every scroll of the wheel, times each click, and flags a button that sends two clicks when you pressed once. It shows only what your browser receives from the mouse: it cannot open the mouse, measure switch wear, or tell a worn switch from a setting on your computer.
Nothing pressed yetClick inside the box with each mouse button, then scroll the wheel up and down.
- Left0held –
- Right0held –
- Middle0held –
- Back (side)0held –
- Forward (side)0held –
- Wheel up0scroll events
- Wheel down0scroll events
- Wheel tilt0left / right
Last 12 events
What a Mouse Click Test Checks
A mouse click test is a page that listens to the events your mouse sends to the browser and shows them as they arrive: which button went down, when it came back up, and how much time passed since the last press of the same button. Two presses of one button that arrive far closer together than a person can click are the classic sign of a mouse that double clicks on its own.
Browsers number mouse buttons the same way everywhere: 0 is the left button, 1 the middle (wheel) button, 2 the right button, 3 the back side button and 4 the forward side button. That numbering comes from the MouseEvent.button reference on MDN, which follows the W3C UI Events specification. Each tile above lights up while its button is held, counts the presses, and shows how long the last press was held.
How to Test a Mouse for Double Clicking
- Put the pointer inside the box and click the left button slowly, about once a second, twenty times.
- Watch the Left tile. Twenty slow clicks should show 20. A higher number, or a red edge on the tile, means some presses arrived as two.
- Press and hold the left button for a few seconds, then let go. If the count jumps while you are still holding, the switch is losing contact and will drop drags and selections.
- Repeat for the right, middle and side buttons, then roll the wheel slowly in one direction and check that only that direction counts up.
The double-click threshold is adjustable. The 80 ms default is a setting of this page, not a published standard: if you click very fast on purpose, choose 50 ms so your own quick clicks are not flagged; if you want to catch borderline cases, choose 120 ms and click slowly.
Reading Your Mouse Test Result
| What you see | What it usually means | What to try |
|---|---|---|
| Count higher than your clicks, red edge | The switch bounces and sends extra presses | Clean around the button, try another port or a fresh battery, then test again |
| A button never counts | The switch, the cable or the mouse software is not sending it | Test on another computer; check the mouse app has not remapped the button |
| Left counts as Right | The primary and secondary buttons are swapped in your system settings | Check the button settings named below |
| Wheel jumps the wrong way | A worn or dirty scroll encoder | Scroll slowly; if it keeps happening, the wheel needs cleaning or repair |
Fixing a Mouse That Double Clicks or Misses Clicks
First rule out the computer. On Windows, open Mouse settings and then Additional mouse settings: the Buttons tab holds the double-click speed, Switch primary and secondary buttons, and ClickLock, which turns a long press into a held button. File Explorer can also be set to open items with a single click, which looks like a double click but is a setting. On a Mac, the double-click speed is under System Settings, Accessibility, Pointer Control.
Then rule out the connection: plug a wired mouse into a different USB port, put a fresh battery in a wireless one, or pair a Bluetooth mouse again. Finally test the same mouse on a second computer. If the extra clicks follow the mouse, the switch itself is at fault; a mouse under warranty should go back to the maker, and a worn switch can be replaced by someone comfortable with a soldering iron.
What This Mouse Click Test Cannot Tell You
The page sees events, not hardware. It cannot read how many clicks a switch has left, measure your mouse's DPI or polling rate, or tell whether a delay comes from Bluetooth, the mouse or the computer. Some mouse apps and operating systems keep the side buttons for themselves, so they never reach a web page; in a few browsers the side buttons may still go back a page. On a trackpad, one swipe produces many scroll events, so the wheel counts there say little about a wheel. On a phone or tablet there is no mouse at all unless you connect one.
Looking for speed rather than faults? The click speed test counts clicks per second. More device checks live in the Tools hub.
Frequently Asked Questions
How do I test if my mouse is double clicking?
Click slowly inside the box above, about once a second, and watch the count for that button. If twenty slow clicks show more than twenty, or the tile turns red, the mouse sent two presses for one click. Hold the button down for a few seconds too: a count that rises while you hold means the switch is losing contact.
Why does my mouse double click when I click once?
Usually the switch under the button is worn or dirty, so its contacts bounce and the mouse reports two quick presses. Before blaming the switch, check your computer: a single-click-to-open setting in File Explorer, ClickLock, or a mouse app macro can all look like a double click. Testing the mouse on a second computer tells the two apart.
Can I do a mouse click test on my phone?
Only with a mouse connected. Phones and tablets have touch screens, which do not send mouse buttons, so this page counts finger taps separately and tells you no mouse was found. Connect a mouse by USB or Bluetooth, or open the page on a computer.
Why do my mouse side buttons not show up?
Some mouse apps and operating systems keep the back and forward buttons for themselves, so they never reach the browser. Close the mouse app or set the buttons to their default back and forward actions, then try again, or try a different browser.
Is a mouse click test the same as a CPS test?
No. A CPS test counts how many clicks per second you can make, which measures you. A mouse click test checks the mouse: that every button registers, once per press, and that the wheel scrolls the right way. Use the click speed test on this site for CPS.
Does this mouse test send my clicks anywhere?
No. The test runs in your browser and keeps the counts in memory on this page. Nothing about your clicks is uploaded, and pressing Reset counts or closing the tab clears them.