Reflex tests
Measure how fast you react to what you see and compare runs by mouse, keyboard and touch screen. Free, and results stay on your device.
The reaction time test measures how fast you respond to something you see. Wait until the box shows Now!, then click, tap or press Space as fast as you can. Five rounds give your average, best and median in milliseconds.
The result includes the delay of your screen, your mouse or touch screen and the browser, so every device gives slightly different numbers. Compare runs on the same device; a wired mouse and your screen’s game mode can reduce the delay. Your results stay on your device.