Reaction Time Test
Free online reaction time test. How fast are your reflexes? Click when the screen turns green — 5 rounds, millisecond precision.
FAQ
The average visual reaction time for adults is about 250 milliseconds. Gamers and athletes often achieve 180-220ms, while times below 150ms may indicate anticipation rather than true reaction.
Yes. Reaction time peaks in the early 20s and gradually slows with age. However, regular practice, exercise, and good sleep can help maintain fast reaction times well into later years.
This test measures simple reaction time — the delay between a visual stimulus (screen turning green) and your motor response (clicking). It runs 5 trials and averages the results for accuracy.
About this test
Reaction time is the interval between a stimulus and your response. This test measures simple visual reaction time, one of the most fundamental measures of cognitive processing speed.
How It Works
Wait for the screen to turn green, then click as fast as you can. The test runs 5 trials and calculates your average reaction time in milliseconds. Early clicks are detected and do not count.
What Affects Reaction Time
Age, sleep, caffeine, attention, and practice all influence reaction time. Athletes, fighter pilots, and esports professionals train specifically to reduce their reaction times.
Benchmarks
- Under 200ms — Excellent (fast responder)
- 200-250ms — Above average
- 250-300ms — Average
- Over 300ms — Below average, may indicate fatigue