Humans need ~250ms to react. Kaizen Fast Clicker fires the instant you tell it to — exact intervals, hotkeys, perfect consistency — for testing, grinding and repetitive tasks. Free to try on Windows.
Need full mouse & keyboard automation instead? Try Kaizen Auto Mouse Click.
A reaction time test measures the delay between a visual signal and your response. Here, the box turns red while you wait, then green after a random 1.5–4 second delay — the moment it flips, click. Your time is measured in milliseconds with performance.now() precision, and five rounds are averaged so one lucky click doesn't flatter you.
| Average (ms) | Rating |
|---|---|
| < 180 | Esports-grade |
| 180–220 | Exceptional |
| 220–280 | Human average |
| 280–350 | Relaxed |
| 350+ | Tired — sleep on it |
Note your monitor and input add 10–40ms of hidden latency, so scores across different setups aren't perfectly comparable — compare against yourself over time.
Pair reflexes with raw speed: take the click speed test or the 10-second Kohi test next.
Testing time-sensitive UIs or grinding reaction-based mechanics? Kaizen Fast Clicker triggers clicks with machine timing, and Kaizen Auto Mouse Click chains clicks, cursor moves and keys into full automated sequences — both tiny, offline Windows apps.
The average human visual reaction time is about 250–280 milliseconds. Under 200ms is exceptional, 200–250ms is fast, and esports professionals often average 150–180ms.
Click to start, wait while the box is red, and click the instant it turns green. The delay before green is random (1.5–4 seconds) so you can't anticipate it. Five rounds are averaged for your score.
Clicking while the box is still red counts as a false start — the round restarts with a new random delay and doesn't affect your average.
Somewhat. Sleep, hydration, caffeine timing and regular practice each shave milliseconds, and gamers benchmark 10–20ms faster than average. Genetics and age set the floor — past your 20s it slowly rises.