Reaction Speed Test
A fast-paced sprint of 10 signals in a row with short, unpredictable gaps. There's no pause between attempts (the next signal starts automatically), so this reaction speed test rewards both quickness and staying sharp.
- Precise timingMeasured locally
- 10 attempts~45 sec
- AnonymousNo sign-up
Your attempts
0 / 10
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False starts
0
Status
Ready
Your results
Complete 10 attempts to see your full results.
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Best
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Average
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Median
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Percentile
How the reaction speed test works
- 1
Start the sprint
Click, tap or press Space once to begin.
- 2
React to each signal
When the box turns green, respond instantly. Gaps are only 0.8 to 2.5 seconds.
- 3
Keep going
The next signal arms automatically. Early responses don't count.
- 4
Review
See your average, best, median and consistency across all 10 signals.
About this test
Most reaction tests give you a breather between attempts. Real situations don't. This test compresses ten trials into well under a minute with short random foreperiods, which makes it a good measure of sustained reaction speed rather than a single best effort.
Pay attention to your standard deviation in the results: a low value means you stayed consistent as the sprint went on, while a high value suggests lapses or anticipation.
How it differs from the classic test
- 10 signals instead of 5, with automatic flow and shorter delays.
- Shorter foreperiods make anticipation more tempting, and false starts more likely.
- Results are stored separately so the statistics stay comparable.
Results are measured in your browser and include some device latency. Read the methodology and disclaimer.
Try other reaction tests
Frequently asked questions
What is a reaction speed test?
Why are my later attempts slower?
Can I use the keyboard?
How do I get a faster reaction speed?
Related guides
All guides- Reaction Time vs Response Time: What's the Difference?Reaction time is how long it takes to start responding to a signal. Response time is the whole thing: reaction time plus the movement that follows. Here's the difference, with examples from tests, driving and gaming.
- What Is the Fastest Human Reaction Time?There's no official world record for reaction time, but research and sprint starts show where the human limit is. Sprinters can sometimes react to the gun in under 100 ms, while most people average around 200 ms or more.
- F1 Driver Reaction Time: How Fast Do Drivers React at the Start?Formula 1 drivers launch their cars about 0.2 seconds after the start lights go out, on average. Here's what that number includes, how drivers train for the start, and how your own time compares.
- How to Improve Your Aim: A Practical Guide for FPS PlayersBetter aim comes from consistent settings, good crosshair placement, short focused practice and enough sleep. Here's a practical routine for FPS games like PUBG, and how to measure your progress honestly.
Take the classic reaction time test
The original click-when-green test. Five attempts, instant results.