How the test works
Choose how long you want to click for, then click anywhere inside the grey box. The clock starts on your first click, not before, so there is no reaction-time penalty. When time runs out the box shows your result in clicks per second, and your best score for that duration is remembered in your browser.
Different durations measure different things. One and five second tests measure burst speed, which is mostly technique. Thirty seconds and above measure stamina, and almost everybody drops off noticeably as the muscles in the forearm tire.
Typical results
- Under 3 CPS — relaxed, ordinary clicking.
- 3 to 5 CPS — average for most people making a real effort.
- 5 to 7 CPS — fast, and about the limit of comfortable normal clicking.
- 7 to 10 CPS — very fast, usually with a deliberate technique.
- Above 10 CPS — jitter or butterfly clicking, or a mouse that is registering extra clicks by itself.
Using this to diagnose a failing mouse
The click counter is a useful hardware test in its own right. Click once, slowly and deliberately, and watch the number. If it goes up by two, the switch inside your mouse is bouncing — the metal contact no longer makes a clean connection, and the computer sees two presses instead of one.
This is the classic double-click fault, and it gets worse over time. It shows up first as files opening when you meant to select them, or as dragging that drops halfway. Many mice can be repaired by replacing the switch, which is a cheap part, though it needs soldering on most models.
A word about your hands
Jitter clicking works by holding the arm under sustained tension, and it is a genuinely effective way to develop tendon pain if you do it often. If you feel any discomfort in the forearm or wrist, stop. No score on a browser test is worth an injury that takes months to settle.