Mouse Double Click Test
Check if your mouse double clicks when you click once, or lets go while you hold a button. Runs entirely in your browser.
This test needs a mouse or touchpad. Touch screens do not send mouse button events.
Left button · about 30 seconds
Place your cursor here and press Start
Only mouse buttons are tested. Keyboard keys do nothing here.
- Clicks
- 0
- Double fires
- 0
- Hold drops
- –
- Shortest gap
- –
- Button
- –
- Left button: not seen yet
- Right button: not seen yet
- Middle button: not seen yet
- Back button: not seen yet
- Forward button: not seen yet
Result
| Button | Clicks | Double fires | Shortest gap | Press to press | Median press | Fast repeats | Lost releases | Hold drops | Verdict |
|---|
What this test measures
Is your mouse double clicking? The usual signs are files that open when you only meant to select them, checkboxes that tick and untick again, links that open twice, and drag-and-drop that lets go halfway. These faults come and go, so they are easy to doubt. This test records every press and release your browser receives from each mouse button and checks them for the patterns a worn switch produces.
- Double fires. Two presses from one click. Worn switch contacts bounce and send an extra press a few milliseconds later. No finger can click that fast, so a double fire means the mouse is at fault, not you.
- Release timing. How long each press lasts and how soon the next press follows a release. A bounce shows up here even when the time from press to press looks normal, which is why simple click counters miss it.
- Hold drops. Whether the button lets go for a moment while you hold it. This is what breaks drag-and-drop and text selection.
- OS double-clicks. How many of your clicks your system turned into a double-click. This depends on your double-click speed setting, so it is shown for information only.
- Every button. Left, right, middle, back and forward, tested one at a time.
- What it can't measure. The browser only sees what your operating system and mouse driver pass on. Many mice filter bounce in their firmware ("debounce time"), so a bad switch can hide behind a high debounce setting. Browsers that round event times, such as Firefox with fingerprinting protection, cannot measure bounce at all; the test tells you when this happens.
How to fix a double clicking mouse
Start with the quick checks and work down the list. Run the test again after each step, so you know which one helped.
Mouse double clicks on a single click
- Rule out the computer. Plug the mouse into another USB port, or test it on another computer. If the double fires follow the mouse, the mouse is the problem.
- Unplug the mouse (or remove the battery).
- Blow short bursts of compressed air around the edge of the button.
- Click the button quickly 50–100 times to clear dust from the switch contacts.
- Retest. If double fires remain, raise the debounce time in your mouse software, if your model has that setting. A higher value filters out short bounces.
- If it still fails, the switch is worn and cleaning will only help for a while. Check your warranty first: use "Copy results" and paste them into the claim. If you can solder, a new switch is a cheap repair. Otherwise, replace the mouse. Mice with optical switches do not have contacts that bounce.
Mouse drops items while dragging
- This is usually the same worn switch. Follow the steps above.
- On Windows, check that ClickLock is off: Control Panel > Mouse > Buttons tab (Windows 11: Settings > Bluetooth & devices > Mouse > Additional mouse settings).
Double click not working
If single clicks work but double-clicks do not open anything, the cause is usually a setting or timing:
- Slow down the double-click speed. On Windows, open the Buttons tab above and move the "Double-click speed" slider towards Slow. Double-click the folder icon next to it to check. On macOS, go to System Settings > Accessibility > Pointer Control.
- Keep the mouse still between the two clicks. If the pointer moves too far, the system sees two single clicks.
- Check how File Explorer opens items: File Explorer > Options > General. If "Single-click to open an item" is on, a single click already opens files.
- If double-clicks still fail only now and then, run the guided test. A worn switch can also miss presses or let go too early, and the hold step shows this.
Double-click only happens in some apps
This is a setting, not a fault. Check the double-click speed as described above. Some apps and games also have their own click or macro settings.
Clicks sometimes do not register
- Replace or charge the battery.
- Move the wireless receiver closer, or try another USB port.
- Test on another computer. If it fails there too, it is the hardware.
Side buttons do not work in the browser
Your mouse software may have given the side buttons another job. Check the button assignments there and set them back to "Back" and "Forward".
Frequently asked questions
About the test
How do I know if my mouse is double clicking?
Watch for files that open when you meant to select them, checkboxes that tick and untick, and items that drop while you drag. To be sure, run the guided test: click 20 times at a normal pace, then hold the button three times. It takes about 30 seconds per button, and the result says whether any click arrived twice.
Is my mouse double clicking, or am I clicking twice?
The test can tell. A finger needs more than about 50 ms to release a button and press it again. A bouncing switch sends the second press only a few milliseconds after the first one, so the test flags it as a double fire.
What is a normal double-click speed?
Your system treats two clicks as a double-click when they come within its double-click time, 500 ms by default on Windows. That is a setting, not a fault. This test looks for much shorter gaps, such as a new press less than 30 ms after a release, which no finger can make.
Does it test the right, middle and side buttons?
Yes. Pick the button in the guided test, or use free click mode for any button. In Chrome and Edge the back and forward buttons do not leave the page during the test. Other browsers may still go back a page, so test side buttons in Chrome or Edge.
Is anything uploaded?
No. The test runs entirely in your browser and nothing is sent to a server.
Problems and repairs
Why does my mouse double click when I click once?
The switch under the button is worn or dirty. Its metal contacts bounce when they close or open, and the mouse sends that bounce as a second click. It is the most common mouse fault and it gets worse with use.
How do I fix a double clicking mouse?
First test the mouse on another USB port or computer to rule out the computer. Then clean the button with compressed air and click it quickly many times. If your mouse software has a debounce setting, raise it. If double fires remain, the switch is worn: claim the warranty, replace the switch if you can solder, or replace the mouse.
Why is my mouse double click not working?
Usually the double-click speed is set too fast for how you click, or the pointer moves between the two clicks. Set the speed slower in your mouse settings and keep the mouse still. On Windows, also check whether File Explorer is set to open items with a single click. If it still fails now and then, the switch may be missing presses; the guided test's hold step shows this.
Is it the mouse or a setting?
If the test shows double fires or hold drops, it is the mouse. If the test is clean but double-clicks still happen in some apps, check your double-click speed and ClickLock settings, then test the mouse on another computer.
Why does my mouse drop items when I drag?
Usually the same worn switch lets go for a few milliseconds while you hold it. The hold step of this test catches that. The Windows ClickLock setting can also change how dragging works, so check that it is off.
Also test: Scroll wheel test