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2xKit

Reaction Time Test

Click the instant the screen turns green — measure your reaction time in milliseconds.

Runs in your browser

How to use this

  1. 1Click "Start" and wait for the screen to turn from red to green.
  2. 2Click as fast as you can the instant it turns green.
  3. 3Clicking too early resets the round, since it means you reacted to nothing.
  4. 4Your reaction time in milliseconds is shown after each click, try to beat your best.

Frequently asked questions

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