Click Speed Test: 1 Seconds
One second is the shortest click window there is, and the strangest to score. Your click count and your clicks per second are the same number, so a single extra click moves the result a whole point.
The timer starts on your first click, not on page load, so nothing is lost while you get ready.
What a one-second window measures
Burst, and almost nothing else. There is no pacing to get right and no stamina to run out of. What decides the score is how fast you get going, because the fraction of a second you spend starting is a large fraction of the whole test.
Reading the score
At one second the two numbers on screen are identical: seven clicks is 7.0 CPS, eight clicks is 8.0. There is no half point available. That coarse resolution is the whole reason one-second results jump around between attempts, and why the same person can post two scores a full point apart without getting any faster.
What a typical score looks like
On tests like this most people land somewhere around five to eight clicks in the second. That is a description of what these tests tend to show, not a measurement of anything. The number includes your hardware. The mouse switch, its debounce delay, the polling rate, the browser and the screen all sit between your finger and the counter, so two people on the same finger speed can post different scores.
Longer windows
One second is too short to compare fairly. The 2 second click test halves the jumpiness and the 5 second click test is the window most results are quoted at. All windows are on the click speed test hub.