Reaction Time Test
Test your reaction speed online for free. Click when the screen turns green. Compare your average with world rankings. No install needed.
Click to Start
How to Use
Start
Click the colored area to begin. The screen will show 'Wait...' in blue.
Wait
Wait for the screen to turn green. The delay is random (1.5–5 seconds) to prevent cheating.
Click!
As soon as the screen turns green, click it as fast as you can.
Check your result
Your reaction time in milliseconds is shown. Under 200ms is excellent. Average human reaction time is around 250ms.
FAQ
The average human reaction time is around 200–250ms. Under 200ms is excellent; under 150ms is exceptional. Top gamers typically average 150–180ms.
Clicking before the green screen appears registers as 'Too Early'. This test detects and rejects early clicks to ensure accurate measurement.
Yes. Your best reaction time is saved in your browser's local storage and persists between sessions.
Factors include caffeine intake, fatigue, age, and practice. Reaction times tend to be fastest when alert and worsen with fatigue.
Take at least 5 attempts and use the average for a reliable measurement. A single result can vary significantly due to random factors.