Reaction Time Test
How to Test Your Reaction Time
- Click the “Start Test” button to begin
- Wait for the screen to turn from blue to yellow to green
- Click as quickly as possible when the screen turns green
- Repeat the test 5 times to get your average reaction time
- Try to avoid clicking too early (before the green appears)
Note: The test measures how quickly you can respond to a visual stimulus. Average reaction times are typically between 200-250 milliseconds.
Click “Start Test” to begin
Current Reaction Time
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Average Reaction Time
— ms
Best Reaction Time
— ms
Tests Completed
0 / 5
Test History
About Reaction Time
Reaction time is the time it takes for you to respond to a stimulus. In this test, the stimulus is the screen turning green. Your reaction time is measured from when the screen turns green to when you click.
Factors that can affect reaction time include age, fatigue, distractions, and whether you’re anticipating the stimulus. Professional athletes often have reaction times under 200 ms.
This test is for entertainment purposes only and is not a medical diagnostic tool.