Reaction Time Test
Test your reflexes — click the moment the screen changes and measure your reaction in milliseconds.
Round 1 of 5
Test how fast you can react. Five rounds, lower is better.
How to play
- Click the big area to start a round, then wait.
- The panel turns red — do not click yet.
- The instant it turns green, click (or tap, or press Space) as fast as you can.
- Click too early and the round resets — patience pays off.
- After five rounds you get your average and a rating.
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About Reaction Time Test
The Reaction Time Test measures how fast you respond to a visual signal, in milliseconds. Over five rounds, the panel turns red while you wait, then flips to green at a random moment — click the instant it changes. Your average across the rounds becomes your score, with a rating from Slow to Lightning.
Reaction speed matters in driving, sports and competitive gaming, and testing it is genuinely revealing: the randomized delay prevents anticipation, and clicking early resets the round. This reaction speed test runs entirely in your browser for free, keeps your personal best on your device, and accepts clicks, taps or the spacebar.
How to use Reaction Time Test
- Click the big area to start a round, then wait while the panel is red.
- Do not click during the red phase — the green switch comes after a random delay.
- The instant the panel turns green, click, tap or press Space as fast as you can.
- If you click too early, the round resets — patience pays off.
- Complete five rounds to see your average reaction time in milliseconds and your rating.