Mouse Double-Click Test
Click the box below once at a time, at a normal pace. A worn switch fires a second click event for a single physical press — this catches it and shows exactly how many milliseconds apart the two clicks landed.
What this actually tests
A human physically cannot release and press a mouse button again in under about 30-50ms — that's faster than the fastest competitive clickers. So when two "click" events arrive that close together from what was one press, the cause is almost always a worn or dirty microswitch inside the mouse making brief, unwanted contact ("switch bounce" or "chatter") rather than anything you did.
If you're seeing misfires
- Try the default 50ms sensitivity first — it's a safe margin above any real human click gap.
- Clean around the switch with compressed air; dust can occasionally cause intermittent contact.
- Check for a manufacturer firmware update — some mice add debounce-time adjustment.
- If misfires are frequent and consistent, the switch itself has likely worn out — this is normal after 1-5 years of heavy use and usually means a repair or replacement.
Want the full repair-vs-replace breakdown?
Read the fix guideFAQ
What sensitivity threshold should I use for this test?
Start with the default 50ms — it's well above the fastest any human can physically release and press a button again, so anything flagged at that threshold is almost certainly a real misfire. Lower it to 30ms only if you want to be extra conservative about false positives, or raise it to 80-120ms if you have unusually fast, deliberate clicks and want to rule those out first.
Can software fix a mouse that's double-clicking?
Sometimes, temporarily. Some manufacturer software and third-party debounce utilities can filter out a second click that arrives within a set time window, which papers over a worn switch without fixing it. It's a reasonable stopgap, but the underlying switch typically keeps degrading and will eventually need a hardware fix.
How long do mouse switches usually last before this happens?
Most mechanical mouse switches are rated for somewhere around 10-50 million clicks depending on quality, which for typical daily use works out to roughly 1-5 years before chatter starts appearing. Heavy gaming use or a naturally lower-rated switch can bring that timeline forward considerably.