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Reaction Time
When the red box turns green, click as quickly as you can.
Press Space or click anywhere
Click anywhere to start
About This Test
The reaction time test measures how fast you respond to a visual stimulus. Your score is the average reaction time across 5 rounds, measured with sub-millisecond precision using performance.now().
Average Scores
- < 150ms — Exceptional (top 1%)
- 150-200ms — Excellent
- 200-300ms — Average
- > 300ms — Below average
Tips to Improve
Focus on the screen, stay relaxed, and avoid anticipating the green. Sleep quality, caffeine intake, and regular practice can improve reaction times significantly.