Reaction Time Test: How Fast Are You?
When the red box turns green, click as fast as you can. Five rounds, then your average, best time, and how you compare to everyone else.
What Your Reaction Time Means
Simple visual reaction time — see a stimulus, respond — takes the median person about 270–280 milliseconds in online tests. Roughly 190–200ms of that is biology (retina → visual cortex → decision → motor command → muscle), and the rest is your hardware: monitors, browsers, and mice each add measurable lag. That's why elite esports players obsess over 240Hz monitors, and why you should compare scores only on the same device.
Reaction speed is cognitively meaningful: processing speed is one of the four index scores in professional IQ testing, and simple reaction time correlates modestly (r ≈ 0.2–0.3) with full-scale IQ. It's also one of the most trainable cognitive metrics — sleep, exercise, and practice all move it. For the broader picture of what speed does and doesn't say about ability, see our guide to what IQ actually measures.
Reaction Time Benchmarks
- Under 200ms — elite: pro gamers, sprinters off the blocks
- 200–230ms — excellent, top ~10%
- 230–255ms — above average
- 255–285ms — average (the online median sits here)
- 285–330ms — below average, still normal
- Over 330ms — tired, distracted, or high-latency device
Frequently Asked Questions
MyIQScores Editorial Team
Researchers in cognitive psychology, psychometrics & educational science
Last updated
May 10, 2026
All content on MyIQScores is reviewed for scientific accuracy against peer-reviewed research in cognitive psychology and psychometrics. Our editorial team cross-references each article with published literature before publication and updates pages whenever new research warrants a revision.