UsefulTab
Double-click Tester
Check for mouse double-click problems and misfires.
Test for mouse double-click problems
A worn mouse switch can register a single physical click as two clicks — the frustrating "double-click" fault that makes files open twice or drags drop early. This tool measures the time between your clicks so you can spot it. Click the pad once, deliberately, and watch the gap since your previous click. A healthy single click shows a large gap. If two clicks register from one press, the gap will be very small — under the threshold you set — and the tool flags it as a suspected double-click misfire. Adjust the threshold to match how fast you actually double-click on purpose (a common default is 200 ms). Everything is measured in your browser with a high-resolution clock, and nothing is uploaded.
Common questions
What counts as a double-click misfire?
Any two clicks that land closer together than the threshold you set (200 ms by default). When you intend a single click, a gap that small means the switch fired twice — the classic double-click fault.
How do I test my mouse?
Click the pad slowly and deliberately, one click at a time. Watch the gap since your last click. If a single press ever shows a tiny gap and gets flagged, your mouse is likely double-clicking.
What threshold should I use?
200 ms is a common cut-off — most intentional double-clicks are faster than that, and most single clicks are far apart. Lower it if you naturally double-click very fast, so intentional double-clicks are not counted as faults.
How accurate is the timing?
The gap is measured with the browser's high-resolution performance clock, so it is accurate to a fraction of a millisecond — precise enough to catch a switch firing twice.
Is anything uploaded?
No. Clicks are timed entirely in your browser. No data about your clicks is stored or sent to a server.