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Click to Start
Test your reaction speed
Last
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ms
Best
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ms
Average
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ms
Recent attempts
How the Reaction Time Test Works
Click the box to start. The area turns red while you wait, then switches to green at a random interval. Click as soon as you see green, and your reaction time is measured in milliseconds.
The test tracks your last five attempts so you can see your best and average scores. For timing other activities, try the stopwatch or timer.
자주 묻는 질문
What is a good reaction time?
The average human reaction time is about 200-250ms. Under 200ms is considered fast.
How is reaction time measured?
The timer measures the gap between the visual signal appearing and your click response.
Why did it say "too soon"?
You clicked before the green signal appeared. Wait for the screen to turn green.