Reaction Time Test
Click the instant the screen turns green and see your reaction time in milliseconds.
Attempt
0
Best
0ms
Avg
0ms
5 attempts remaining.
How to use Reaction Time Test
- 01Click to arm the test, then wait — the delay before green is random.
- 02Click the moment the panel turns green. Clicking early is counted as a false start.
- 03Complete five attempts to see your best time and your average.
About Reaction Time Test
Simple visual reaction time for adults averages roughly 200 to 250 milliseconds on a mouse. That figure includes the time light takes to be processed by the retina, the signal to travel to the motor cortex and your finger to actually move, so there is a hard physiological floor well above zero.
Screen refresh rate and input lag add real milliseconds too — a 60Hz screen alone can add up to 16. Compare your results against your own previous runs on the same device rather than against numbers from someone else's setup.
Frequently asked questions
- What is a good reaction time?
- Around 200-250ms is typical, under 200ms is fast, and consistently under 180ms is exceptional.
- Why was my click a false start?
- You clicked before the panel turned green. The delay is randomized specifically so it cannot be anticipated.
- Does my screen affect the result?
- Yes. Refresh rate and input lag add a few milliseconds, so compare runs on the same device.
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