Tests & Benchmarks
Reaction Time Test
Measure your visual reaction time in milliseconds with a simple click test.
Visual reaction time is the time between seeing a stimulus and making a motor response. The average human reaction time is 200-300ms. Athletes and gamers often train to sub-200ms responses. This test measures the simple reaction time paradigm.
Reflex Test
Average of 5 attempts
Average
-- ms
Start Test
Click when the screen turns GREEN
Formula and method
Reaction Time = Click Timestamp - Stimulus Display Timestamp
A random-delay green screen appears after 1-5 seconds of waiting. The browser timestamps both the stimulus onset and the click event. The difference is reaction time in milliseconds. Tests are averaged across 5 attempts to reduce noise.
Worked examples
Esports player baseline
Start the test above to record your own result. Device and browser timing affect the measurement.
Age effect test
Start the test above to record your own result. Device and browser timing affect the measurement.
Assumptions and limits
- Monitor refresh rate 60Hz+
- Standard browser event loop (no significant background load)
- Simple visual reaction paradigm (not choice reaction)
This tool provides an educational estimate. Rules, rates and personal circumstances can change the answer. Review the assumptions before relying on a result. Report a correction.
Common mistakes to avoid
- Anticipating the stimulus rather than reacting to it — random delays prevent this but anxious guessing still occurs.
- Testing with high browser CPU load — background tabs and processes add latency to event handling.
- Comparing results across devices — mobile touchscreens have 50-100ms additional latency vs desktop mice.
Frequently asked questions
What is a good reaction time?
Under 150ms: Exceptional (elite athlete/gamer). 150-200ms: Excellent. 200-250ms: Good (above average). 250-300ms: Average. 300-400ms: Below average. The average person is 200-250ms on this test.
Can reaction time be improved?
Yes, though there is a genetic ceiling. Regular gaming, sport-specific training, and adequate sleep improve reaction time. Caffeine can reduce it by 10-30ms. Sleep deprivation significantly slows reaction time.
Is reaction time related to intelligence?
There is a small positive correlation (r ≈ 0.2-0.3) between reaction time and IQ in research studies, but the relationship is weak. Reaction time primarily reflects neural processing speed and motor control rather than cognitive ability.