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在线测量你的视觉反应时间，多次测试取平均值，了解你的反应速度处于什么水平。
Tip: The average human reaction time is around 200–300 milliseconds. Your results can be influenced by your device, network, screen refresh rate, and attention. For more reliable scores, it's recommended to perform multiple tests and use the average.
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The average human visual reaction time is around 200 to 250 milliseconds, while F1 drivers can push this number under 150 milliseconds. Reaction time refers to the total time it takes from when your eyes see a signal, your brain processes it, to when your fingers execute an action. What this testing tool does is very simple: there is a large color block on the page. The timer starts the exact moment it turns from red to green and stops the moment you click your mouse (or tap your screen). The elapsed milliseconds represent your reaction time.
This measures your "simple reaction time"—you only need to perform a fixed action in response to a single signal, without any complex decision-making. You use this ability in daily life when hitting the brakes while driving, catching a falling object, or spotting an enemy firing in a game. It is not an IQ test or a clicking speed competition, but rather a comprehensive reflection of your nervous system's conduction speed combined with your muscle response speed.
After opening the test page, you will see a large test area in the center of the screen and a "Start Test" button. The entire process consists of four steps:
Step 1: Click the "Start Test" button. The test area will turn red and display "Waiting." This means the test has
