Measure your reflex speed online. Click as fast as you can when the box turns green.
This reaction time test measures how quickly you respond after a visual change. When you start, the box will turn red first. After a random delay, it turns green. Click as soon as you see the green color.
Your score is shown in milliseconds. Lower is faster. You can retry as many times as you want to compare attempts and track your best score.
What is a good reaction time?
A common reaction time for simple visual tests is often around 200 to 300 milliseconds, though results vary depending on device, attention, and clicking speed.
Does device type affect the score?
Yes. Mobile devices, trackpads, mice, browser performance, and screen refresh rate can all affect timing slightly.
Can I improve my score?
Usually, yes. Repeating the test can help you get more comfortable with the timing and reduce hesitation.