Speed & Reflexes
Reaction Time Test
Wait for the red panel to turn green, then click as fast as you can. You get five rounds and your score is the average — one number that sums up your visual reflexes.
When the red panel turns green, click as fast as you can. 5 rounds — false starts don't count. Average reaction time for adults is about 273 ms. Score guide is below.
What this measures
The reaction time test measures simple visual reaction time: the delay between seeing a stimulus and producing a motor response. That chain runs from your retina through the visual cortex to the motor cortex and down to your hand, and for most adults it takes about a quarter of a second. Reaction time is one of the most-studied measures in cognitive psychology because it tracks alertness, age, fatigue, and even caffeine intake with surprising sensitivity.
Where this shows up in real life
Drivers, athletes, and anyone who works with machinery rely on the same visual-to-motor chain this test measures. A slower day often tracks fatigue, poor sleep, or distraction — useful as a personal alertness check, not a medical diagnosis.
Score guide
| Rating | Score |
|---|---|
| Exceptional | under 200 ms |
| Excellent | 200–240 ms |
| Above average | 240–270 ms |
| Average | 270–320 ms |
| Below average | over 320 ms |
How to improve
- Rest your finger on the mouse button or screen — travel distance adds real milliseconds.
- Look at the centre of the panel rather than scanning; peripheral detection is slower.
- Test when alert. Sleep deprivation reliably adds 20–60 ms to reaction times.
- Don't guess. A false start restarts the round, and anticipating adds variance rather than speed.
- A wired mouse and a high-refresh monitor can shave 10–20 ms of hardware latency off your score.
Frequently asked questions
What is a good reaction time?
The average adult scores around 273 milliseconds on a click-based test. Anything under 240 ms is above average, and under 200 ms is exceptional — typical of competitive gamers and athletes in their teens and twenties.
Why is my reaction time worse than the averages I see quoted for athletes?
Laboratory tests measure from stimulus to muscle activation with specialised hardware. A browser test includes your monitor's refresh delay, your input device latency, and the click itself, which together add roughly 30–80 ms for everyone. Compare yourself against browser-test averages, not lab numbers.
Can I actually improve my reaction time?
Raw neural speed is largely fixed in adults, but practical reaction time improves with practice, alertness, and familiarity with the task. Most people shave 10–30 ms off their first-attempt score within a few sessions simply by reducing hesitation.
Does age affect reaction time?
Yes — simple reaction time is fastest in the late teens to mid twenties and slows gradually afterwards, roughly 2–6 ms per decade. Staying physically active measurably slows that decline.