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Reaction Time Test

Wait for the signal, then click as fast as you can to measure your reaction time in milliseconds.

Input

Result

How to use

  1. Press Start.
  2. Wait for the "Click now!" signal.
  3. Click as quickly as possible.
  4. Try a few times and look at your best and average.

When to use it

  • Testing reflexes for gaming
  • Comparing scores with friends
  • Checking alertness when tired

Typical results

Most people react to a visual signal in about 200–300 ms. Your device, screen and mouse add a little delay, so compare results on the same device. Clicking before the signal resets the round.

Frequently asked questions

What is a good time?

Under 250 ms is quick for most people.

Why does the delay vary?

The signal appears after a random wait so you can't predict it.

Does my screen matter?

Yes, refresh rate and input lag add a few milliseconds.

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