Want to test your reflexes online? Our free reflex test measures how fast you can respond to a visual signal — the same reaction-time test used in cognitive psychology, gaming benchmarks, and sports performance labs. No signup, works on phone or desktop, results in under a minute. ▶ Take the Reflex Test
A reaction time test measures the delay between a stimulus (a color change, a beep, or a shape) and your motor response (a click or tap). It captures how fast your visual system, brain, and hand can coordinate a decision. Reflex tests measure the same thing casually; reaction time tests measure it precisely.
Teens (13–19): 200–230 ms
Adults (20–39): 210–250 ms
Adults (40–59): 230–280 ms
Seniors (60+): 250–310 ms
These are visual simple reaction times. Choice reactions (picking one option out of many) are always slower — usually 100–200 ms slower — because they add decision time.
Reaction Time: The core benchmark. Repeat 5+ trials for a stable average.
Simple Click: Even more minimal — just click when the signal changes.
Go/No-Go: React only when the correct signal appears. Adds impulse control.
Audio Tone: Reaction to sound instead of sight — usually 30–50 ms faster.
Multiple Stimuli: Choice reaction — respond to the correct one of many.
Stroop Test: Trains attention control under conflict, which shows up in reaction times.
Do at least 5 trials — one number tells you nothing.
Throw out the fastest and slowest, average the rest.
Use the same device every time. Screen refresh rate matters.
Test at the same time of day, before caffeine, before meals.
Retest weekly, not daily — the noise from mood and sleep is huge.
Practice matters, but not the way most people think. Read our deeper guides:
Processing speed training — how to get faster at taking in and acting on information.
Reaction time test online explained — how the test works, what it measures.
Open the Reaction Time test on a computer with a wired mouse if you can; phones and wireless devices add delay.
Rest your finger on the button. Do not hover or press early.
Wait for the screen to change colour, then click as fast as you can. Clicking early counts as a false start.
Do five attempts and look at the average, not the best single result.
Repeat on another day at the same time to see your normal range.
Several everyday factors move reaction times more than practice does.
Sleep. Restricting sleep to six hours a night for two weeks slowed reaction times about as much as two nights without sleep, and people barely noticed (Van Dongen et al., Sleep, 2003).
Physical activity. Fitter people tend to respond faster, and a single bout of exercise can temporarily sharpen alertness.
Caffeine. A normal dose of caffeine usually speeds simple reactions for a few hours, especially when you are tired.
Equipment. A high refresh-rate monitor, a wired mouse and closing other programs can each shave milliseconds off measured times. Compare scores only on the same device.
Age. Reaction times are fastest in early adulthood and slow gradually after that (Der and Deary, Psychology and Aging, 2006).
Decision speed matters as well as raw reflexes. In games and sport you usually choose between responses, so practise choice tasks like Go/No-Go and Lightning Choice as well as the simple test.
Average (about 250–300 ms)
Fix the basics: sleep, a wired mouse and a quiet room usually help more than practice.
Quick (about 200–250 ms)
Train choice reactions with Reflex Test and Quick Tap; they transfer better to games than simple clicks.
Very quick (under 200 ms)
Focus on consistency: try to narrow the gap between your best and worst of five.
Add tracking tasks such as Moving Target or the Aim Trainer.
Our Reaction Time game shows you a signal, you click as fast as you can, and it averages your response across multiple trials — the same protocol used in cognitive labs.
The typical adult visual reaction time is 200–270 ms. Under 200 ms is fast; under 180 ms is elite. Auditory reactions are ~40 ms faster than visual.
Yes. Regular reaction-time practice reliably shaves 10–30 ms off your average within 2–3 weeks. The bigger gains come from reducing variability, not raw speed.
Massively. Sleep loss can slow reaction time by 50+ ms. Caffeine (200 mg) typically speeds it up 5–15 ms. Test at the same time of day for meaningful comparisons.
Somewhat. Simple reaction time improves a little with practice and a lot with good sleep and alertness. Choice reaction time, deciding which response to make, improves more with practice.
Test your reflexes with five attempts and use the average. Sleep, alertness and equipment move the number more than anything else, and choice-reaction games are the best practice for faster decisions in games and sport. The reaction time test guide explains what the milliseconds mean, the aim trainer guide applies them to mouse accuracy, and processing speed training covers the thinking side of speed.