Double-click in this box
Every double click
- Your double clicks will show here, newest first.
Two clicks within half a second count as a double click. A gap under 60 ms (or under 20 ms after the button came up) is too fast for a finger: the mouse sent it by itself.
About the double click test
Double-click the big circle and the page shows how many milliseconds passed between your two clicks. Every double click goes into a list, so you can see your fastest, your slowest and your average.
The test also looks for the most common mouse fault: you click once, but the computer gets two clicks. Each time that happens, the circle flashes red and the list shows a fault with the tiny gap — often just a few milliseconds.
Nothing is recorded or sent. The test runs in your browser.
Features
- The gap of every double click — in milliseconds, from the first press to the second
- Faults found by themselves — a single click that arrives as two is marked red
- Release check — also catches a switch that "bounces" when you let go of the button
- Fastest and average — see how quick your double click really is
- A list of every pair — the newest on top, with the time the button was up
- Every button — test the left button, and the right, wheel and side buttons too
- No menu, no Back — right-clicking or side buttons inside the box do not leave the page
How the test decides
The page watches each press of a button and the time since the press before it:
| What happens | What the page says |
|---|---|
| Second press within 500 ms of the first | Double click, with the gap |
| Second press less than 60 ms after the first | Fault: one click came as two |
| Button comes down again less than 20 ms after it went up | Fault: one click came as two |
| More than 500 ms between presses | Two single clicks (counted as Clicks) |
Why these numbers? 500 ms is the usual double-click time in Windows. And nobody can press a button, let it go, and press it again in 60 ms — a finger needs more time than that. A worn switch can: its metal contact bounces and sends a second click a few milliseconds after the first.
What your numbers mean
- 150 to 300 ms — a relaxed, normal double click
- under 100 ms — a very fast double click
- over 400 ms — slow; some computers may read it as two single clicks
- a few ms, marked red — not you: the mouse sent an extra click
The button up time in each row is how long the button was released between the two presses. In a fault it is often under 5 ms.
If your mouse double-clicks by itself
- Test it more. Click once, slowly, 30 or 40 times. One or two faults can be a fluke; many faults mean a worn switch.
- Check the settings. Make sure no mouse software turns one click into two, and that the double-click speed in your system's mouse settings is not set to the slowest.
- Try another port or computer. If the faults stay with the mouse, the mouse is the problem.
- Clean it. Blowing air around the button sometimes helps for a while.
- Replace the switch or the mouse. A new switch fixes it for good. Many mice have a warranty that covers this fault.
Frequently asked questions
Why does my mouse double-click when I click once?
Most often the switch under the button is worn. Its contact bounces and the mouse sends two clicks a few milliseconds apart. This test shows those clicks as faults in red.
What is a good double-click speed?
Anything that your computer reads as a double click is fine. Most relaxed double clicks are somewhere between 150 and 300 ms. Windows counts two clicks within 500 ms as a double click by default.
Can I get a fault by clicking very fast?
Not with one finger. Even very fast double clicks have more than 60 ms between the presses, and the button stays up for longer than 20 ms. If you see a fault, the mouse sent the extra click.
Can I test the right button?
Yes. Every button is checked. Rows for buttons other than the left one show the button's name, for example "right button".
Does it work with a touchpad?
Yes. A tap counts as a click, so a double tap shows its gap. A touchpad rarely has the bouncing fault, but a physical touchpad button can.
Related tools
- Mouse Test — every button, the scroll wheel and the polling rate
- Mouse Polling Rate Test — how many times a second your mouse reports
- Click Speed Test — how many clicks per second you can do
- Keyboard Test — find dead and stuck keys
- Gamepad Tester — test a game controller
How to use it
- Move the mouse into the box with the circle
- Double-click many times at your normal speed and read the gaps in the list
- Then click once, slowly, 30 or 40 times — the page warns you if one click arrives as two
- Try the right button and the side buttons the same way
- Press Reset to clear the numbers and test again
