Reaction Time Test
Measure your reflexes in milliseconds. When the screen turns green, click as fast as you can. Free, no signup, works on mobile.
Measure your reflexes in milliseconds. When the screen turns green, click as fast as you can. Free, no signup, works on mobile.
A reaction time test measures how fast your brain processes a visual stimulus and triggers a motor response. The average human reaction time to a sudden color change is 250–300 milliseconds. Elite athletes and pro gamers consistently score 180–220ms. This benchmark is widely used to track cognitive performance, sleep quality and the effect of caffeine, age or gaming hardware on reflexes.
The average human reaction time to a visual stimulus is around 250–300 milliseconds. Under 200ms is excellent. Elite athletes and pro gamers regularly score 180–220ms.
The screen starts grey. When it suddenly changes color, click as fast as you can. The test measures the time between the color change and your click in milliseconds. We take the best of 5 attempts.
Reaction time depends on sleep, caffeine, age, and whether you use a mouse or touchscreen. Touchscreens add ~40ms of latency vs a gaming mouse. Tiredness can slow reactions by 50–100ms.
Yes. Regular practice, good sleep, and reducing device latency (high-refresh-rate monitor, wired mouse) all help. Most people improve by 20–40ms after a few weeks of daily practice.
A lot. A 240Hz gaming monitor gives you ~30ms advantage over a 60Hz laptop. Wireless peripherals and Bluetooth add 10–50ms. Use a wired setup for the best results.
Reliable human reactions under 100ms are extremely rare and usually indicate a false start. The fastest confirmed reaction times are in the 120–150ms range.