Reaction Time Test
Measure your reflex speed in 5 quick rounds.
Click when the screen turns green. Get your average reaction time, best score, and see how you compare.
What is reaction time?
Reaction time is the interval between a stimulus appearing — like a screen turning green — and your response to it. It's a measure of how quickly your brain and nervous system can process information and send a signal to your muscles.
The average human reaction time is around 200–250ms. Elite athletes and professional gamers often clock in below 180ms through training and practice.
Average reaction time by group
| Group | Average |
|---|---|
| Professional gamerElite | 150–180ms |
| Trained athleteFast | 180–200ms |
| Average person | 220–250ms |
| Slower than average | 300ms+ |
What affects your reaction time?
- Fatigue — Tiredness significantly slows both perception and response. Sleep deprivation can add 50–100ms.
- Age — Reaction time peaks in your early 20s and gradually slows with age.
- Caffeine — Moderate caffeine intake has been shown to improve reaction speed by 10–30ms.
- Screen lag — Display latency adds to your measured time. A high-refresh-rate monitor removes this variable.
- Practice — Regular reaction training can meaningfully improve your baseline over weeks of consistent effort.
Frequently asked questions
What is a good reaction time?
Anything under 200ms is considered fast. The average person scores between 220–250ms. Under 150ms is exceptional and typically seen only in trained athletes and pro gamers.
Is 200ms reaction time fast?
Yes — 200ms puts you in the top 20% of people. Most untrained individuals score between 220ms and 280ms on a click-based test like this one.
Does gaming improve reaction time?
Research suggests that action video games can improve visual processing speed and attention, which translates to faster reaction times — often by 10–30ms compared to non-gamers.
What is the average human reaction time?
The average simple visual reaction time for healthy adults is approximately 220–250ms. This test measures click reaction time, which includes the time to move your finger and click, so results may be slightly higher than lab-measured values.