Reaction Time Test
Test your reaction speed with this visual stimulus test. Click when the screen turns green and measure your reflexes in milliseconds.
Reaction Time Test
Test your reaction speed. Click when the screen turns green.
How to play:
- Click the box or press Space/Enter to start
- Wait for the box to turn green
- Click as fast as you can when it turns green
- Don't click too early or it won't count!
How to Use
- 1Start the test — Click the box or press Space/Enter to begin.
- 2Wait for green — The box will turn red. Wait for it to turn green.
- 3Click immediately — As soon as you see green, click as fast as you can.
- 4View your results — See your reaction time in milliseconds and how you compare.
- 5Track your progress — Take multiple attempts to see your average and best times.
Frequently Asked Questions
What is a good reaction time?
The average human reaction time to visual stimulus is around 250ms. Under 200ms is considered excellent, and under 150ms is exceptional. Pro gamers often achieve 150-180ms consistently.
Can I improve my reaction time?
Yes! Regular practice can improve reaction time. Factors like sleep, caffeine, and focus also affect performance. However, there's a biological limit to how fast humans can react.
Why does my reaction time vary?
Reaction time is affected by many factors including fatigue, alertness, anticipation, and even the time of day. Some variation is completely normal.
Is this test accurate?
This test measures your reaction to a visual stimulus with millisecond precision. However, factors like display latency and input lag can add a few milliseconds to your measured time.
What's the difference between reaction time and reflexes?
Reaction time is the conscious response to a stimulus, while reflexes are automatic responses. This test measures reaction time, which involves visual processing and motor response.