Reaction Time Test

The average human visual reaction time is about 200–250 ms. Under 200 ms is considered fast, and competitive gamers and athletes often reach around 150 ms.

Fatigue, lack of sleep, age, screen or mouse/touch lag, and distractions all slow you down. Resting, a low-latency display and repeated practice usually help.

We measure the time between the box turning green and your click, in milliseconds, and average it over 5 rounds. Clicking before green counts as too soon.

Yes — simple reaction time is fastest around your early-to-mid twenties and slows gradually afterwards. Regular exercise, good sleep and practice on the specific task can offset a large part of the age difference.

Sleep well, stay physically active, and practice the exact task — repeated attempts on the same test reliably shave off milliseconds. Caffeine gives a small temporary boost. Huge jumps are unrealistic, but going from 280 ms to 220 ms with practice is common.

Touchscreens add input latency, and a 60 Hz display refreshes about every 17 ms, so the green signal itself appears later than on a fast gaming monitor. Compare scores only against attempts on the same device.

On average, yes — top esports and fighting-game players often test in the 150–180 ms range, compared with roughly 200–270 ms for most adults. But their real edge is anticipation: reading the game so well that they start moving before the stimulus even appears.

Strongly. Sleep deprivation slows reactions measurably — pulling an all-nighter can impair you about as much as being over the drink-drive limit. A moderate dose of caffeine speeds simple reaction time slightly for a few hours. If your score suddenly drops, tiredness is the first suspect.