Reaction Time Test
Wait for the green — then click as fast as you can. How sharp are your reflexes?
Reaction Time Test
Click to start
About Reaction Time Test
Reaction time is the interval between the onset of a stimulus and the start of a muscular response. The average human visual reaction time is 200–250ms. Elite athletes and competitive gamers often train to achieve sub-200ms times. Factors like fatigue, caffeine, age, and device screen latency all influence your score.
Controls
- Click / Tap the box — Start the test, and click again as soon as the box turns green
- Space bar — Also triggers click when the box is focused
- If you click too early (before green), it counts as a false start — click again to retry
How to Play
- Click the colored box to start.
- The box turns blue — this is the waiting phase. Do NOT click yet.
- After a random delay (1.5–5 seconds), the box turns green.
- Click as fast as possible the moment it turns green.
- Your reaction time in milliseconds is displayed immediately.
- Previous attempts appear as pills below the box — your personal best is highlighted in green.
- Take multiple tests and watch your average improve with practice.
Reaction Time Scale
- Under 150ms — Superhuman (likely anticipated the signal)
- 150–200ms — Elite Athlete level
- 200–250ms — Above Average
- 250–350ms — Average
- 350ms+ — Below Average (try again when less tired)