Reaction Time Test
How fast are your reflexes? Click when the screen changes and find out.
Click to Start
Best
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Avg (0/5)
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Attempts
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About this tool
Measure the delay between a visual signal and your click. Start the test, wait while the screen remains in its waiting state, and click only after it turns green and says “Click NOW!” The tool records elapsed milliseconds, supports repeated attempts, and keeps session statistics so you can compare consistency rather than judging one lucky trial. A result of 250 ms means one quarter of a second passed between the signal and click. Five trials of 240, 260, 255, 245, and 250 ms average 250 ms. Try a baseline before a gaming session, compare mouse and touch input, use it as a playful group challenge, or observe how fatigue and distraction affect repeated attempts. Clicking early counts as a false start rather than a fast reaction. Device latency, display refresh rate, browser workload, touch processing, and input hardware all influence the number, so results from different devices are not perfectly comparable. This is not a medical, neurological, driving-fitness, or athletic diagnostic test. Sit comfortably, take several trials, and reset statistics when conditions change. Avoid endless repetition if hand strain develops.
How to use
Click the large area when it reads "Click to Start."
Don’t click during "Wait for green..."; react as soon as it turns green and says "Click NOW!"
Choose "Click to go again" for another attempt, or "Reset Stats" to clear Best, Avg, and Attempts.