Reaction Time

About the Reaction Time Test

This is a simple test of your visual reaction time — how quickly you can respond to something you see. When you start, the pad turns red; after a random delay it flips to green, and your job is to click as fast as possible. Your time is measured in milliseconds from the color change to your click. The average human reaction time to a visual stimulus is around 200–250 ms, so anything under 200 ms is excellent.

How to play

• Click the pad to begin — it turns red.
• Wait for it to turn green, then click immediately.
• Click too early (while red) and the attempt resets — no cheating!
• Your best and rolling average of the last 5 tries are tracked.