What is reaction time?
Reaction time is the delay between seeing a signal and responding to it. In games, faster reaction can help you respond to enemies, timing windows, or sudden movement, but decision-making and accuracy are just as important.
Reaction Time Test
Check how quickly you respond to a visual signal. This tool is useful for gamers, aim training, focus practice, and understanding how display latency, attention, and sleep affect your reaction speed.
Click when the box turns green
Click to start
Your reaction—
What affects reaction time?
Sleep, focus, stress, caffeine, display refresh rate, mouse latency, browser performance, and internet distractions can all affect your score. Run multiple attempts and compare the average instead of judging one result.
Quick comparison guide
| Result | What it usually means |
|---|---|
| Low or unstable numbers | Check power mode, browser settings, drivers, background apps, and device temperature. |
| Different result in another browser | Browser engines, extensions, and hardware acceleration settings can change test behavior. |
| Good result but bad gaming feel | Game settings, ping, input lag, in-game FPS, or frame pacing may be the real issue. |
Frequently Asked Questions
What is a good reaction time?
Under 200 ms is very fast, 200–250 ms is strong, 250–300 ms is common, and above 300 ms may improve with rest and practice.
Why was my first score bad?
The first attempt often includes surprise and setup delay. Try several rounds for a fair average.
Does a 144Hz monitor improve reaction time?
It can reduce visual delay compared with 60Hz, but your personal response speed still matters.
Can I train reaction time?
You can improve focus, anticipation, and consistency with practice, but natural limits and fatigue still play a role.
Does ping affect this test?
No. This browser test is local, so internet ping is not part of the measurement.
Why did it say too early?
You clicked before the green signal. Wait until the color changes before clicking.
Is mouse or touchscreen better?
A mouse is usually more consistent. Touchscreens can add device-specific delay.
How many attempts should I take?
Take 5 to 10 attempts and look at your average score.