Reaction time is the time between a visual signal and your response, measured in milliseconds. Click when it turns green to see your percentile, typical averages, and trend.
This reaction time test measures how quickly you respond when a visual signal appears. When the area below turns green, tap/click as fast as possible. Your score is shown in milliseconds, plus an estimated percentile and a 10-shot average you can track over time.
Tap/click the area above. When it turns green — tap/click immediately.
Upgrade to Reaction Test — Level 2 (go/no-go, more control) to test inhibition and response selection.
Try Stroop Test to measure interference control (reaction speed + decision conflict).
Reaction time is the delay between a stimulus appearing and your first response. This page uses a simple visual reaction time paradigm (a single color change), inspired by classic experimental psychology tasks. If you want the breakdown (eyes → brain → movement), see how reaction time works.
Even a “simple click” is a chain: noticing the signal, processing it, and executing a movement. Your score includes perception + processing + motor execution. That’s why results vary with focus, stress, sleep, and device input lag.
This is not an IQ test and not a medical diagnostic tool. It does not measure complex decision-making, clinical reflex pathways, or neurological health. It measures a basic response to a single visual cue.
Many healthy adults in a simple visual reaction task often fall around 200–250 ms, but “average” depends on age, fatigue, and device. For deeper benchmarks, see average reaction time by age.
| Age group | Typical simple visual reaction time | Notes |
|---|---|---|
| Teens (13–19) | ~180–240 ms | Often faster processing + motor speed |
| Adults (20–39) | ~190–260 ms | Common baseline range for simple tasks |
| Adults (40–59) | ~210–290 ms | Small slowing is typical |
| Seniors (60+) | ~240–340 ms | More variability; consistency matters |
| Any age | +0–60 ms | Possible extra device/touch latency (phone vs mouse) |
Screen refresh rate, pixel response time, touch processing, and browser scheduling can all add latency. That’s why percentiles and comparisons are most useful when you keep the same setup.
Most people improve by getting more consistent and cutting slow outliers. Short practice sessions, better sleep, and reduced stress help. Practical ideas: how to improve reaction time.
This test is based on a classic simple reaction time paradigm used in experimental cognitive psychology. If you want to explore the research landscape, see PubMed searches for simple reaction time and visual reaction time tasks.
Sleep, stress, caffeine timing, and attention can shift results. A few slow outliers can raise the average noticeably, so your 10-shot average is the better baseline.
Not exactly. Reflexes are automatic responses, while this test includes perception and the decision to act (see green → click).
Touchscreens and mobile browsers add latency (display refresh and touch processing). Comparing phone vs desktop is rarely fair.
It can. Faster displays and lower input lag can reduce measured time slightly. Track progress on the same device and setup.
Randomized timing and false-start resets are designed to reduce timing tricks. Your average across many attempts is still the most meaningful number.