Double-click test
Is your mouse registering two clicks when you press once? This double-click test catches that "chatter" — the classic sign of a worn left-button micro-switch. Click the pad with normal single clicks: any interval too short to be intentional is flagged in red and counted, with a live verdict. Everything runs in your browser — nothing is uploaded.
Double-click test
Click the pad with deliberate single clicks to check your mouse for double-click chatter.
Chatter is when one physical click registers as two. Click normally, one press at a time — any interval shorter than the selected threshold (a human cannot intentionally double-click that fast) is counted as chatter and shown in red. Common on worn mouse micro-switches.
100% local — nothing leaves your device
How to use it
- 1 Click the test pad with deliberate, single left clicks — one press at a time.
- 2 Watch the interval between clicks. Anything below the chosen threshold is impossible to do on purpose, so it is counted as chatter and shown in red.
- 3 Pick a sensitivity (40, 50 or 70 ms) — a higher value catches milder chatter.
- 4 Read the verdict: zero chatter events over many clicks means the switch is healthy; repeated chatter on single presses means it is likely failing.
- 5 Press Reset to start a fresh measurement.
Troubleshooting
Mouse double-clicking on a single click
If single presses register twice here, the left micro-switch is worn or dirty — the most common mouse fault. Try a different USB port or cable, lower the double-click speed in your OS mouse settings, update the driver, and blow compressed air into the switch. If chatter persists, the switch needs replacing (or use the maker's warranty).
The test counts doubles even though my mouse is fine
Make sure you are doing genuine single clicks, not fast tapping. An intentional double-click (about 100–200 ms apart) is normal and is not flagged; only intervals under the threshold count as chatter. Lower the sensitivity to 40 ms if your deliberate clicks are very fast.
No clicks register on the pad
Click directly inside the test pad so the page has focus. Some browser extensions or custom mouse drivers can intercept button events — disable conflicting tools and reload. On a trackpad, use a firm single tap or the physical button.
Chatter shows up only sometimes
Intermittent double-firing is exactly how a failing switch behaves early on — it gets worse over time. Click 30–50 times and watch the chatter counter; even a few events on deliberate single clicks indicate the switch is starting to fail.
Frequently asked questions
What is mouse double-click chatter?
Chatter is when one physical press of the mouse button registers as two clicks. It happens when the micro-switch inside the button wears out and bounces, sending a second signal microseconds after the first — far faster than a human can click on purpose.
How does this double-click test detect a bad mouse?
It measures the time between your clicks. A real intentional double-click is roughly 100–200 ms apart; chatter is under ~50 ms, which is physically impossible to do deliberately. Any interval below the selected threshold is counted as chatter, so repeated short intervals on single clicks reveal a failing switch.
Is anything uploaded or recorded?
No. The test reads standard pointer events directly in your browser and shows the result instantly. Nothing about your clicks or device is saved, sent to a server, or shared.
Can a double-clicking mouse be fixed?
Sometimes. Cleaning the switch with compressed air or contact cleaner can help temporarily, and lowering the OS double-click speed reduces accidental triggers. A lasting fix usually means replacing the micro-switch (a cheap, solderable part) or claiming warranty on the mouse.
Which mouse button does this test check?
The left button, because it gets the most use and fails first. Click the pad with your left button. The same wear can affect the right button — if you suspect it, the general mouse test shows every button's activity.
Does it work on a laptop touchpad?
Yes — taps register the same way, so you can check a touchpad for double-tap issues. Chatter is mainly a mechanical-switch problem, so it is most meaningful for a real mouse.