What counts as a good reaction time?
Reaction time is measured from the moment a stimulus appears — in this test, the screen turning green — to the moment you respond by clicking. A typical healthy adult reacts to a visual stimulus in 200 to 300 milliseconds. That gap between seeing something and physically responding to it is made up of several steps: light hits your retina, a signal travels to your visual cortex, your brain processes it and sends a motor command, and your finger muscles contract. All of that happens in under a third of a second.
Elite athletes and competitive gamers often average below 200ms, but this is partly due to extensive practice, anticipation, and optimised hardware — not fundamentally different neurology. Anyone can improve their results with consistent practice.
| Result | Rating | Comparable to |
|---|---|---|
| Under 150ms | Superhuman | Top 0.1% — elite esports pros |
| 150–200ms | Excellent | Competitive gamers, trained athletes |
| 200–250ms | Good | Above average — faster than most people |
| 250–300ms | Average | Normal for healthy adults |
| 300–400ms | Below average | May indicate fatigue or distraction |
| 400ms+ | Slow | Likely fatigued, distracted, or just warming up |
What affects your reaction time?
Reaction time is not a fixed trait — it changes constantly based on your current physical and mental state. Understanding what slows you down is the first step to improving.
Fatigue is the single biggest factor. Even mild sleep deprivation adds 20–50ms to your average reaction time. After 17–19 hours without sleep, reaction time degrades to levels comparable to a blood alcohol level of 0.05%.
Caffeine has a measurable positive effect on reaction time at moderate doses — roughly 100–200mg (one to two cups of coffee). It increases alertness and reduces perceived fatigue without significantly affecting motor accuracy for most people.
Alcohol consistently slows reaction time, even at low blood alcohol concentrations. A BAC of 0.05% can add 30–50ms to reaction time, which at highway speeds translates to several extra metres of stopping distance.
Age plays a role too. Reaction time peaks in the early-to-mid twenties and gradually slows from there. The decline is modest until around age 50, after which it becomes more noticeable. However, experienced older adults often compensate with anticipation and pattern recognition.
Time of day matters more than most people expect. Most people are fastest in the late morning and early afternoon, when core body temperature and alertness are both elevated. Early morning and late evening tests tend to produce slower results.
Practice and familiarity with a specific task also improve measured reaction times. Your first attempt on this test is nearly always slower than your fifth, as your brain learns the exact type of stimulus to watch for.
How to get your best score on this test
Take at least five rounds and use your average — not your single best — as your benchmark. Single-attempt results are unreliable because they vary based on when you blink, shift attention, or anticipate the signal. Your average across five attempts reflects your actual baseline much more accurately.
For best results: test when you are alert and well-rested, use a mouse rather than a trackpad if possible (lower mechanical latency), make sure your screen is at a comfortable brightness, and sit in a comfortable position with your clicking hand relaxed. Tense muscles are marginally slower than relaxed ones.
Do not try to anticipate the green signal. The delay before "go" is randomised between 1.5 and 4.5 seconds specifically to prevent this. Clicking early registers as a "too soon" and doesn't count. Genuine reaction time — responding to the stimulus after it appears — is what this test measures.
Reaction time for gamers vs. average people
Competitive gamers — particularly in fast-paced genres like first-person shooters and fighting games — often cite reaction time as a key performance metric. Professional esports players typically average 150–180ms in controlled tests, compared to the general population average of 200–250ms.
However, in-game reaction time and isolated click-response tests are not the same thing. In games, players also benefit from anticipation, reading opponent patterns, and pre-aiming — meaning the actual neural reaction component is often a smaller part of what makes someone fast than raw millisecond scores suggest.
A score of 200–250ms on this test is entirely normal and would not prevent anyone from performing well in most games. The difference between 200ms and 150ms is real but represents a relatively small edge in most gaming scenarios outside the highest competitive levels.