A click speed test is a simple tool that measures how fast you can click your mouse or keyboard buttons. It works by having you repeatedly press the left mouse button for a specified period of time. The results are calculated based on your CPS rate, which is a measurement of the number of clicks per second you make. If you are not utilizing your mouse, you can check it with your keyboard or trackball for the test.

Source: https://opautoclick.com/click-speed-test/