Reaction Time Test When the red box turns green, click as quickly as you can. Click anywhere to start. Statistics About the test This is a simple tool to measure your reaction time. The average (median) …

Jul 14, 2026 · The meaning of REACTION is the act or process or an instance of reacting. How to use reaction in a sentence.

Online reaction time test. Click as soon as the field turns green. Average and best time, attempts, CSV export, and built‑in self‑tests.

May 25, 2026 · A chemical reaction is a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical …

How fast are your reflexes? Take the reaction time test and find out your speed in milliseconds. Compare your score to averages by age, gender, and gamer rank.

REACTION definition: a reverse movement or tendency; an action in a reverse direction or manner. See examples of reaction used in a sentence.

Reaction Look up in Wiktionary, the free dictionary. Reaction may refer to a process or to a response to an action, event, or exposure.

3 days ago · Synonyms for REACTION: response, answer, take, reply, backlash, reflex, revulsion, recoil; Antonyms of REACTION: action, effect, behavior, cause

Improve your reaction time with our reaction time test. Measure your response speed and compare it with others. Take the test now on our website.

Have you ever wondered how quick your brain can respond to new visual information? The average human reaction time is around 250ms and the world record is 120ms. Take the test to find out your …