⚡ Reaction Time Tester
The screen turns green at a random moment — click as fast as you can the instant it does, and your reaction time is measured in milliseconds. Try a few rounds to track your best time and average.
How to use
- Click the area to start.
- Wait while the screen is red — don't click yet.
- Click as fast as possible the instant it turns green to see your reaction time.
FAQ
What happens if I click too early?
If you click before the screen turns green, it shows "too soon" and that attempt isn't counted. Wait for green, then click again.
What's an average human reaction time?
Simple visual reaction time is typically around 200-300 milliseconds on average, though your measured result also depends on display response time and input device latency.
Can I reset my recorded results?
Currently, only the most recent 10 attempts are kept automatically. Reloading the page resets your history.