Reaction Time Test

Most adults score around 200-300ms for a visual reaction test. Frequent FPS or rhythm game players often score under 200ms. Your result screen also shows a grade — Elite, Fast, Average, or Slow.

You'll see a "too soon" message and that round won't be counted. Click retry to run the same round again.

It's fixed at 5 rounds for now. Press Restart to run a fresh set of 5 rounds from the beginning.

Your fastest single-round time is saved in this browser and compared against every new attempt. It isn't shared across other devices or browsers.

It shows how evenly your reaction times were spread across the 5 rounds. A lower number means your speed was steadier round to round.

It plots each of your 5 rounds as a bar, with your fastest round highlighted in green so you can spot your best round at a glance.

A bright red full-screen flash can strain your eyes, so the waiting state uses a dark color and only the click signal uses an easier-on-the-eyes green.

No. All measurement and storage, including your all-time best, happen entirely in your browser and are never sent to a server.