Instant ms results
Precise timing using high-resolution browser clocks.
100% Free · Private · No sign-up
Reaction Time Test
100% free — classic reaction time test. Wait for the screen to turn green, then click as fast as you can. Get your score in milliseconds and share it with friends.
—Last result
—Avg (last 5)
~250msHuman average
Click Start or tap the box to begin
Recent attempts
Three simple steps
How to test your reaction time online
Measure reflex speed in milliseconds — the same test used in gaming circles worldwide.
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1
Wait for green
Click Start. The box turns red — wait. When it flips green, click immediately.
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2
Get your score
Your reaction time appears in milliseconds. Faster is better.
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3
Share and compare
Copy your score and challenge friends to beat it.
Everything you need
Why use this reaction time test
Simple, accurate, and built for sharing — no app install required.
Running average
Track your last five attempts and spot improvement.
Gamer-friendly
The same red-to-green format used in esports reflex drills.
Private
Everything runs locally — no account, no uploads.
What is a good reaction time?
Human reaction time to a visual stimulus averages around 250 milliseconds (ms), though trained gamers and athletes often score between 180–220ms. Anything under 200ms is considered excellent.
This test uses the classic wait-for-green format: a random delay prevents anticipation, then the screen changes color and your click is timed. Clicking too early — before green — registers as a fault, just like professional reflex tests.
Reaction speed varies with fatigue, caffeine, monitor refresh rate, and input lag. For the fairest comparison, use the same device and test when you're alert. Share your score with friends — it's free marketing for bragging rights.
Common questions
FAQ
How does the reaction time test work?
Click Start and wait while the box stays red. After a random delay (1–5 seconds), it turns green. Click as fast as possible — your time in milliseconds is measured from green to click.
What is the average human reaction time?
Most people score around 200–300ms on visual reaction tests. The often-cited average is roughly 250ms, but gamers and athletes frequently beat that with practice.
Why did I get "too soon"?
You clicked before the screen turned green. Anticipating the change doesn't count — wait for the color change, then react.
Is this reaction time test free?
Yes. 100% free, no sign-up, and all timing runs in your browser. Your scores are never uploaded.