Click the box about once a second: any click that arrives twice is marked.
What arrived in this run
Every gap is listed here, the newest first.
Our default, change it. A gap shorter than the line is marked in the list.
More options
Click about once a second and let the button come all the way up each time. Thirty clicks give 29 gaps, and at that pace each should sit near 1,000 ms. A gap under the 80 ms line did not come from your rhythm.
–This run
–Your best
–Last run
Click the left button 30 times, about once a second. Every gap is listed, and the ones under the line are marked. The line is ours: change it.
This double click test lists the gap, in ms, before every click, so you can see whether one press is arriving as two. Any gap under the line, 80 ms at first, is marked.
Read the full guide
How the mouse double click test reads a run
Thirty slow clicks give 29 gaps, and at one click a second each should sit near 1,000 ms. The result counts the gaps under the line and gives no verdict on the mouse. The line is our starting choice, not a hardware standard: change it under The line, in ms and the list is marked again.
Why one press can arrive as two
Springy switch contacts can bounce apart before they settle. The electronics behind a button wait that out, which is called debouncing. Our own explanation is that a bounce which outlasts the wait can arrive as a second click.
Repeat the check with Second mouse, 30 slow clicks: short gaps on one mouse only point away from your settings.
A button that doubles once in 50 presses can slip through 30 clicks. Left button, 100 slow clicks catches more.
Questions and answers
How do I test if my mouse is double clicking?
Click the box about once a second and read the list. Gaps near 1,000 ms are yours. A gap of a few tens of milliseconds among them is a click you did not make.
Is this double click tester a double click speed test too?
Yes. Under More options, pick Double click on purpose, 10 pairs in the Check menu. Each pair shows its gap in ms and whether the browser counted it as a double click. The median gap is your mouse double click speed.
Is there a mouse hold test and a mouse drag test?
Yes, both in the Check menu under More options. Left button, five-second hold counts every release seen while you hold the button down, and Drag across the pad, five times logs each early release with how far the marker got.
Does the double click checker work on the right and middle buttons?
Yes. Under More options, the Check menu has Right button, 30 slow clicks and Middle button, 30 slow clicks. Each mouse button has its own switch, so check each one. On a phone a tap counts as a left click.
All 20 checks
Slow-click checks, one button at a time 4
Left button, 30 slow clicksClick about once a second and let the button come all the way up each time. Thirty clicks give 29 gaps, and at that pace each should sit near 1,000 ms. A gap under the 80 ms line did not come from your rhythm.
Left button, 100 slow clicksFor a fault that comes and goes. A button that doubles once in 50 presses gets through 30 presses clean about 55 times in 100, but through 100 presses only about 13 times in 100.
Middle button, 30 slow clicksPress the wheel straight down without rolling it. The pad stops the autoscroll cursor from appearing. A middle button that doubles can open one link in two tabs, or close two tabs with one press.
Right button, 30 slow clicksThe pad holds back the context menu, so the right button is timed exactly like the left. In daily use a right button that doubles can show as a menu that shuts the moment it opens.
Show all 20 checks (16 more)
Press-style checks 3
Left button, 30 sharp tapsQuick, firm taps, still only one a second. This is the opposite press style to the soft round. Put the two lists side by side: short gaps that turn up in only one of them still count.
Left button, 30 soft pressesPress as slowly and lightly as will still register. In one engineer's bench tests of 18 kinds of switch, bounce on a toggle switch varied three to one with how fast it was worked, so a clean run in one press style does not clear the other.
Left button, tip, middle and backTen clicks at the front tip of the button, ten in the middle and ten as far back as it will still click. The button is a lever over a small switch, so where you press changes how hard and how squarely the switch is struck.
Comparison checks 3
Same mouse, other connectionMove the cable or receiver to a different USB port, or switch between cable and wireless if the mouse does both, then repeat. The switch and the mouse's own electronics are the parts every connection shares, so a pattern that follows the mouse everywhere starts inside it.
Second mouse, 30 slow clicksPlug in another mouse and repeat the default check. This round keeps a history of its own, so the two lists sit side by side. Short gaps on one mouse and none on the other, on the same computer and browser, point at that mouse and away from your settings.
Touchpad taps, 30 slow tapsOn a laptop, tap the touchpad lightly without pressing it down. A tap is read by the pad's touch sensing, with no mechanical contact to bounce. Short gaps here as well point at software that sends clicks, not at a switch.
Hold and drag checks 3
Drag across the pad, five timesHold the button and carry the marker from the left post to the right one. Finger pressure shifts while the hand moves, which makes this a harder test of a switch than holding still. A drop is logged with how far the marker got.
Left button, five-second holdPress and keep the button down until the bar fills. The page counts every release it sees before you let go. One release you did not make is what drops a file halfway through a drag or cuts a text selection short.
Right button, five-second holdThe same hold on the right button, with the context menu held back. Worth running if a game or a drawing program uses a held right button to aim, pan or rotate and the view keeps snapping back.
Double clicks on purpose 5
Double click on purpose, 10 pairsDouble click the pad ten times at your natural pace. Each pair shows its gap in ms and whether the browser counted it as a double click, read from the click count it attaches to every click. The median gap is your double click speed.
Find your double click limitDouble click slower and slower. The page keeps the longest gap that still counted as a double click and the shortest that did not, and the limit lies between them. It is this browser's limit, which may follow your system's setting or be a fixed figure such as 500 ms.
Relaxed double click, 10 pairsFor a slower hand. Aim for gaps of 400 ms or more and see how many pairs still count. If some are missed, the double-click speed in your system's mouse settings can be made slower. Run Find your double click limit again afterwards, because not every browser follows that setting.
Steady double click, 10 pairsA double click has to land in nearly the same place twice: systems allow only a small movement between the clicks. This round shows how many pixels the pointer moved between the presses of each pair, which explains a double click that was fast enough and still did not count.
Triple click, five setsThree quick clicks raise the click count to 3, which selects a line or a whole paragraph, depending on the program. The round shows both gaps in each set and the highest count reached, so you can see which click arrived too late.
Setting your own line 2
Strict line, 30 slow clicks at 40 msThe default check with the line halved. Use it if your fastest clicking dips under 80 ms, so that nothing you could do yourself gets marked. The trade is that a gap of 40 to 80 ms now goes unmarked, so read the whole list and not only the count.
Your fastest clicking, five secondsClick as fast as you can on a mouse you trust. The result is your shortest and median gap. Ten clicks a second is a 100 ms gap and 12.5 is 80 ms, so fast fingers can reach the line. Set it just below your own shortest gap. Never saved.
How this list was compiled: Checks designed for this page. Each one changes a single thing about the default check (which button, how you press, which mouse or connection, whether you hold, or whether the double click is made on purpose), so that two lists of gaps can be compared fairly. The 80 ms line is this site's own starting value and not a hardware standard: nobody publishes one, which is why the page lets you change it. The sums are this page's arithmetic: 1,000 ms divided by a gap gives clicks a second (80 ms is 12.5, 100 ms is 10), and a button that doubles once in 50 presses gets through 30 presses clean with probability 0.98 to the power 30, about 0.55, and through 100 presses with probability about 0.13. Contact bounce and debouncing follow https://en.wikipedia.org/wiki/Switch#Contact_bounce. That a bounce which outlasts the debounce wait can arrive as a second click is this page's own explanation and is not in that article. The bench figures (18 kinds of switch; 16 of them averaged 1,557 microseconds of bounce with a worst case of 6,200; one took 11.3 ms to close once and another bounced for 157 ms on opening; one toggle switch varied three to one with how fast it was worked) are from Jack Ganssle, A Guide to Debouncing, https://www.ganssle.com/debouncing.htm. Button numbering, including the fourth and fifth buttons that browsers use for Back and Forward, follows https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/button. The click count that a browser attaches to each click is described at https://developer.mozilla.org/en-US/docs/Web/API/UIEvent/detail, and the W3C UI Events draft of 30 May 2019, https://www.w3.org/TR/2019/WD-uievents-20190530/, says the delay after which that count resets depends on how the environment is configured. The 500 ms default named in the questions is the Windows figure given at https://learn.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-setdoubleclicktime, and the settings paths are at https://support.microsoft.com/en-us/windows/change-mouse-settings-e81356a4-0e74-fe38-7d01-9d79fbf8712b and https://support.apple.com/guide/mac-help/change-pointer-control-settings-accessibility-unac899/mac. That a browser can apply a fixed limit of its own is from the Chromium source code: https://raw.githubusercontent.com/chromium/chromium/main/ui/events/event_constants.h sets kDoubleClickTimeMs to 500, ui/events/event.cc in the same tree counts a repeated click against it, and ui/events/blink/web_input_event.cc takes the click count from the operating system in one of its desktop builds only. No other browser's code was read, so the page says only that the limit is the browser's. That systems allow only a small movement between the two clicks of a double click, and that the delay is not standardised, follow https://en.wikipedia.org/wiki/Double-click. What three quick clicks select in different programs follows https://en.wikipedia.org/wiki/Triple-click, and tap-to-click on a capacitive pad follows https://en.wikipedia.org/wiki/Touchpad. All pages checked 2026-09-19. No click speed, average or record on this page comes from another site. Licence: own work