What Is the Average Human Reaction Time?
The average human reaction time to a visual stimulus is about 250 milliseconds (a quarter of a second). Reactions to sound are a little faster (~170 ms) and to touch faster still, because those signals reach the brain more quickly.
What counts as fast?
- Under 200 ms — excellent; typical of trained gamers and athletes.
- 200–250 ms — above average.
- 250–300 ms — average range for most adults.
- Over 300 ms — slower; often just tiredness or distraction on the day.
Test your reaction time
Try our reaction time test: wait for the box to turn green, then click as fast as you can. It measures your time in milliseconds with a high-resolution timer and averages your last few attempts — the fairest way to see your true number.
What affects your reaction time?
- Sleep and fatigue — being tired slows you down more than almost anything else.
- Age — reaction time is fastest in your late teens to late twenties, then gradually rises.
- Caffeine and focus — moderate caffeine and full attention both help.
- Hardware — monitor refresh rate and input lag add real milliseconds, so gaming gear genuinely matters.
How to improve it
You can shave off some time with practice, good sleep, and reducing input lag (a higher-refresh monitor, wired mouse). Warm up first, and test several times — a single try is noisy. For a different challenge, measure your click speed with the CPS test.
FAQ
Why did the test say I clicked too soon?
Clicking before the box turns green is a false start — it means you anticipated rather than reacted, so the test resets to keep your score honest.
What is a pro gamer's reaction time?
Top competitive players often land in the 150–200 ms range, helped by practice and low-latency setups.
Is reaction time the same as reflexes?
Closely related — a true reflex is involuntary, while reaction time includes the tiny decision to act.