Improve your hand–eye coordination with this simple and accurate reaction time test. Click the box the moment it turns green, and we'll measure your response in milliseconds. Track your history, compare your average, and see how your reflexes improve over time.
When the box turns green, click as quickly as you can to measure your reaction time.
A reaction time test is a quick and effective way to measure how fast your brain and body respond to visual changes. This tool is designed to give you a reliable reaction time score using a simple green-light trigger. When the screen turns green, click as fast as you can—your response time is instantly calculated in milliseconds.
Your reaction speed is influenced by several factors: alertness, focus, fatigue, device latency, and even the type of mouse or keyboard you use. That's why this reaction test displays not only your latest result but also your average score and test history. Over multiple attempts, you get a clearer understanding of your real reaction time.
Most people fall between 200–300 ms, which is considered the normal reaction range for healthy adults. Competitive gamers, athletes, and people who practice frequently may reach under 200 ms. Scores below 150 ms are extremely rare and usually happen only under optimal conditions.
This online reaction timer is built to be lightweight, distraction-free, and instantly responsive. Unlike many reaction tests that show ads or unnecessary animations, this one focuses entirely on speed and accuracy. You can restart instantly, log multiple attempts, and see whether you're improving over time.
Use this tool to test your reflexes, train your response speed, or simply have fun competing with friends. It also works well as a warm-up before gaming sessions or aim-training practice. For the most accurate results, close unused apps, avoid multitasking, and use a wired mouse or keyboard if possible.
Most adults have a reaction time between 200–300 ms. Anything faster than 200 ms is above average.
When the screen turns green, you click as quickly as possible. The tool measures the delay between the green signal and your click.
Practice, fewer distractions, proper sleep, and using a low-latency device can noticeably improve your results.
Yes. Faster reaction times help in FPS games, racing games, and competitive scenarios where quick decisions matter.
If you click before the screen turns green, the test resets—this prevents false scores and keeps results accurate.