⚡ Live
Reaction Time Test
Test your reflexes with a simple click-when-it-turns-green reaction time test, and track your recent results.
How to use it
- Click the box to start.
- Wait for it to turn green — don't click too early.
- Click the instant it turns green.
- Your time in milliseconds appears, and your recent scores are tracked below.
FAQ
What's a good reaction time?
Average human reaction time is around 200–250ms; under 200ms is considered fast.
What happens if I click too early?
The test resets and asks you to try again — clicking before green doesn't count.
Is this scientifically accurate?
It's a fun approximation using your browser's timing — good for casual comparison, not clinical measurement.
Related tools
⏱️
Stopwatch
Start, lap, and stop with precision.
🍅
Pomodoro Timer
Focus sprints with built-in breaks.
🎲
Random Time Generator
Spin up a random time or date.