When the red box turns green, click as quickly as you can. Click anywhere to start.
Reaction time is the interval between the presentation of a stimulus (like a color change) and the initiation of a response (like clicking a mouse). It reflects how fast your brain processes information.
The signal travels from the retina to the visual cortex, then to the motor cortex, and finally to the muscles in your hand. This complex pathway takes time, typically around 200-300 milliseconds for visual stimuli.
Your score is measured in milliseconds (ms). Lower is better. The test calculates the average of your attempts to provide a more stable estimate of your true reaction speed.
This online test includes the latency of your computer system and browser. While highly consistent for comparing your own performance, it may differ slightly from laboratory equipment results.
To measure and track your visual reflex speed. It is useful for gamers, athletes, and anyone interested in their cognitive performance.
The average human visual reaction time is around 250ms. Anything below 200ms is considered very fast. Professional gamers often achieve 150-180ms.
Practice, stay hydrated, get enough sleep, and ensure you are using a low-latency monitor and mouse. Caffeine can also temporarily boost alertness.
Yes. The latency of your monitor, mouse, and even browser can add 10-50ms or more to your result. Wired peripherals are generally faster than wireless ones.
It measures the total time from the signal to your click received by the browser. While it's good for comparison and tracking progress, it includes system latency.
Mobile devices often have higher input latency due to touchscreen processing. You might find your reaction time is slower on a phone compared to a desktop computer.
The random waiting period ensures you can't predict when the signal will appear. This tests your true reaction to the visual stimulus.
Generally, reaction time peaks in the early 20s and slowly declines with age. However, regular practice can help maintain speed.
Clicking before the green signal is a 'false start' and doesn't count. You'll have to try again.
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