How It Works
A large red circle appears. Stay focused and keep your finger ready — but don't click yet.
The circle turns green at a random moment. Click or tap as fast as you can!
Your reaction time in milliseconds is displayed. Complete 5 rounds to get your average.
Human Reaction Time Facts
How Fast Are You?
Improve Your Reaction Time
Focus on the center of the circle and relax your hand — tension slows you down.
Use your dominant hand and position your finger directly over the click area.
Try to anticipate the timing without clicking early. Feel the rhythm.
Avoid distractions — close other tabs and silence notifications.
Warm up with a few practice rounds before going for your best time.
Frequently Asked Questions
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