Reaction Time Tester

Test your reaction speed by clicking as fast as you can when the screen turns green.

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Reaction Time Test

Click anywhere on this box when the color changes to green.

Rating Scale

<150ms — Lightning Fast

<200ms — Excellent

<250ms — Great

<300ms — Good

<400ms — Average

400ms+ — Keep Practicing

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Frequently Asked Questions

Average human reaction time is 200-250ms. Under 200ms is excellent, 200-300ms is good, 300-400ms is average, and over 400ms is slow.

The test uses high-precision browser timing (performance.now) to measure your reaction in milliseconds. Results may vary slightly based on device and browser.

You clicked before the screen turned green. This means you were anticipating the change rather than reacting to it. Wait for the green screen!

Practice regularly, get enough sleep, stay focused, minimize distractions, and keep your hand relaxed on the mouse or screen.

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