Reaction Time
Click as soon as the screen turns green. Measures raw visual reaction time in milliseconds.
About the reaction time test
The reaction time test measures how fast your brain and body respond to a visual signal. It's a simple but powerful benchmark used by athletes, gamers, and researchers to gauge alertness and reflex speed. Take five attempts to get a reliable average.
How it works
- 1Click Start and wait — the screen begins red.
- 2As soon as it turns green, click (or tap) as fast as you can.
- 3Your reaction time is shown in milliseconds. Lower is better.
- 4Repeat 5+ times for a reliable score. Personal best saves automatically.
Score benchmarks
How your score stacks up. Values are indicative averages, not clinical thresholds.
| Tier | Score |
|---|---|
| Elite | < 180 ms |
| Excellent | 180–220 ms |
| Average | 220–280 ms |
| Slow | 280 ms + |
Tips to improve
- Use a wired mouse or trackpad — Bluetooth adds 10–30 ms of latency.
- Turn off browser extensions and background tabs.
- Rest your finger lightly on the button — don't press until you see green.
- Take the test when well-rested; fatigue slows reflexes by 20%+.
Frequently asked questions
What is a good reaction time?
For a visual click test, 200–250 ms is average for adults. Anything under 180 ms is elite territory, typically only seen in professional gamers and athletes.
Why is my reaction time slower than 250 ms?
Common causes are wireless input latency, a high-refresh delay in your display, tiredness, or distraction. Retake the test on a wired setup after a short break.
Does age affect reaction time?
Yes — reaction time peaks in the early 20s and slowly declines with age, but consistent practice, sleep, and exercise keep it competitive well into later decades.
Is this test accurate?
It uses the browser's high-resolution performance timer, so timing is accurate to the sub-millisecond. Your display refresh rate adds up to 16 ms of variability on a 60 Hz screen.