Test how fast your reflexes are (in ms)
Built & maintained by Pappu Venkata Subbi Reddy, founder of Clacify
Clacify's Reaction Time Test measures how quickly you can respond to a visual stimulus — a colour change on screen — by clicking or tapping. Your response time is shown in milliseconds (ms). The average human reaction time to a visual stimulus is approximately 250ms; trained athletes can react in 150–200ms. Take multiple attempts and see your average. Reaction time is affected by fatigue, caffeine, age, and practice.
The average visual reaction time for adults is approximately 250 milliseconds (0.25 seconds). Athletes and gamers often have reaction times of 150–200ms. Reaction time naturally slows with age, beginning around age 25, and improves temporarily with caffeine or stimulants.
Regular practice, adequate sleep, good hydration, and physical fitness all improve reaction time. Playing fast-paced video games, racket sports, and martial arts are known to develop faster reflexes. Caffeine can temporarily reduce reaction time by 10–30ms.