Test your reaction speed with our free online tool. Click when you see the color change and get instant results in milliseconds.
When the red box turns green, click as quickly as you can.
Click anywhere to start.
A Reaction Time Test measures how quickly you can respond to a visual signal. The test shows a screen that changes from red to green at random intervals when you see green, click as fast as you can. Your response time is measured in milliseconds (ms), showing how long it took from the color change to your click.
The test provides multiple attempts and calculates your average reaction time along with your fastest response. A reaction time between 150-300ms is considered good, while professional gamers and athletes often achieve times closer to 150ms. These measurements help determine the speed of visual processing and physical response time.
Track your response time with millisecond accuracy, ensuring exact measurements of your reaction speed.
Experience truly random color changes that prevent pattern prediction, giving you accurate reaction time results
Take multiple tests to see your average reaction time and track your fastest responses.
View your reaction time results immediately after each attempt, including your current speed and best score.
Start the Test
Click the 'Start' button to begin. The screen will show a neutral color.
Wait for the Signal
Stay focused and watch for the screen to change from red to green. This happens at random intervals to ensure accurate testing.
Click When Color Changes
As soon as you see the color change, click your mouse or tap your screen as quickly as possible
Check Your Results
View your reaction time in milliseconds. Take multiple tests to see your average speed and fastest response.
Testing your reaction time helps you understand how quickly you respond to visual signals. This is useful for:
Know your baseline reaction speed and track improvements for competitive gaming.
Compare your reaction times to average scores and measure your own progress.
Regular testing helps you work on maintaining consistent reaction speeds.
Get instant feedback about your current reaction time in milliseconds.
Begin with the Beginner level and shorter durations. Move to harder difficulties and longer tests as your skills improve.
Watch the text as you type rather than your hands. The color-coded feedback will help you catch and correct mistakes instantly.
Reaction times are typically fastest between ages 18-35.
Good physical and mental health leads to better response times.
Being well-rested helps maintain quick reactions.
A quiet, well-lit environment improves test accuracy.
Regular testing can help improve your reaction speed.
Yes due to how the human brain processes visual signals, reaction times below 100ms are physically impossible and likely indicate anticipation rather than true reaction.
Anticipation is when you click before seeing the color change. These results are typically under 100ms and don't count as valid reaction times.
No, our test is designed specifically for mouse clicks to ensure consistent and accurate measurements.
While different mice may have slight variations in response time, the difference is typically minimal (1-2ms) and won't significantly impact your results.
We recommend taking at least 5 attempts to get a reliable average reaction time measurement.
Some variation is normal. Focus on your average time rather than individual results, and try to maintain consistent testing conditions.
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