Gaming edge
Faster reflexes mean quicker responses in FPS and battle-royale games.
Reflex Speed
Free Open Source Reaction Time Test
Click the moment the box turns green. Measure your reflex speed in milliseconds — free and instant, no download needed.
Millisecond precision
Last 5 results
Browser based
ms
Precision
5
Saved results
Free
No signup
Real-time timing
Measures the exact moment you click after the signal appears.
Track your average
Last 5 attempts averaged so you can see improvement over runs.
Primary tool
Reaction Time Test
Click the box to start, then click again the instant it turns green.
Click to Start
Tap the box to begin a round
Millisecond accuracy
Timestamps captured with Date.now()
Early-click guard
Penalises clicking before the signal
Rolling average
Tracks your last 5 attempts
Browser based
No installs or signups needed
Reflex Measurement
Why Test Your Reaction Time?
Knowing your baseline reaction speed helps you track improvement for gaming, sport, or general health.
Benchmark yourself
Compare your result against average and pro-level reaction speed ranges.
Track improvement
Run multiple rounds and watch your average drop as you warm up.
Spot fatigue
A slow score after a long session is a useful signal to take a break.
Simple workflow
How to Use the Reaction Time Test
Three steps — click to start, wait for green, click as fast as you can.
01
Click to start
Tap the grey box to enter the waiting state.
02
Wait for green
After a random delay the box turns bright green — click immediately.
03
See your time
Your reaction time in milliseconds appears instantly.
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What Is a Good Reaction Time?
The average human reaction time to a visual stimulus is around 200–250 milliseconds. This is the baseline for most adults under normal, rested conditions. Trained gamers and athletes frequently score in the 150–200 ms range thanks to practice and heightened focus. Elite esports professionals can sometimes dip below 150 ms in ideal conditions. Keep in mind that browser-based measurements add a small amount of overhead compared to native hardware timing, so scores here may read 10–20 ms higher than a dedicated peripheral benchmark.
Factors that affect your score include time of day, caffeine intake, screen refresh rate, mouse and monitor latency, and general fatigue. Always do several warm-up rounds before comparing your average against the table below.
Reaction Time Ratings
| Time (ms) | Rating | Notes |
|---|---|---|
| Under 150 ms | Top-tier esports and professional athlete level | |
| 150–200 ms | Well above average — consistent competitive performance | |
| 200–250 ms | Normal range for a healthy, rested adult | |
| 250–300 ms | Below average — try warming up or reducing distractions | |
| 300 ms+ | Fatigue or distraction is likely affecting your score |