An interactive reaction time test online helps users measure how fast they respond to visual or sound cues. It works directly in the browser, making it simple for students, gamers, and curious minds. With clear prompts and instant results, the activity feels engaging rather than technical. Many people enjoy comparing scores over time to notice improvement. Placed in the middle of the experience, a reaction time test adds excitement and focus. Regular practice can boost attention, coordination, and quick thinking in everyday digital tasks.