MMouseTestHQ

Click Latency & Reaction Time Test

Wait for the green screen, then click as fast as possible. Clicking before green counts as a false start.

Important: This measures perceptual + input latency combined — i.e., how fast you see a stimulus and click in response. It is NOT a measure of pure hardware click latency (that requires specialized equipment like a $500+ test rig).
Rounds:
Click to start — round 1 / 10
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Best (ms)
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Average (ms)
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Median (ms)
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Worst (ms)
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Std Dev
0 / 10
Progress

About This Test

This is a reaction-time test adapted for mouse input. The browser shows a colored box; the time between the box turning green and your click is measured to the nearest millisecond using performance.now(). We run multiple rounds to give you a stable average and visualize the distribution as a histogram.

What Your Score Means

  • < 200 ms: Excellent — pro gamer tier. This includes display lag (~5–15 ms) plus your reaction time.
  • 200–250 ms: Good — typical for dedicated FPS players.
  • 250–320 ms: Average — most adults fall here.
  • 320+ ms: Above average — fatigue, distraction, or hardware latency may be factors.

What's Included in Your Score

  1. Display input lag: the time your monitor takes to show the green color (~5–15 ms on modern displays, more on TVs).
  2. Visual processing: your eyes detect the change, your brain recognizes it (~150–250 ms).
  3. Motor response: your brain signals your finger to click (~30–50 ms).
  4. Mouse click latency: the time between switch activation and the click event being sent to the OS (1–10 ms on a healthy mouse, more on worn switches).
  5. OS / browser latency: usually <1 ms in modern browsers.

How to Get Your Best Score

  • Use a high refresh-rate monitor (144Hz+) — lower display latency helps.
  • Use a wired, low-latency mouse. Wireless adds 1–4 ms typically.
  • Close background tabs and applications — distractions affect reaction time more than people think.
  • Stay hydrated and take breaks — fatigue measurably degrades reaction times.
  • Click with a light, snappy switch — heavy click force slows you down.

Limitations

This test cannot isolate pure mouse click latency (e.g., the time between the switch physically closing and the click event reaching the browser). For that, you need a dedicated device like the Mouse Tester by measuredmechanicalkeyboards.com or a high-speed camera setup. But for most users, this gives a useful end-to-end latency picture.