Reaction Time Test is an online tool designed to measure how quickly you can respond to a visual change on the screen. When the display switches color, you must click immediately, and your reaction speed is shown in milliseconds. It offers a fun, fast, and simple way to test your reflexes and improve focus. The tool is easy to use, works on any device, and provides instant results. Whether you're aiming to boost your hand-eye coordination or just curious about your reaction speed, this test is a great way to challenge yourself and track your progress over time.