F1 Reaction Test

How to play: click, tap or press SPACE to start. Five red lights come on one by one. When they all go out, react as fast as you can. Reacting while the lights are still on is a jump start.

This free F1 reaction test recreates a Formula 1 race start in your browser. Five pairs of red lights come on one after another, then after a short random pause they all go out. Your job is to react the moment they go out, just like a driver launching off the grid. Your time appears in milliseconds, and your best time and your average over the last five starts are kept on this device.

How the F1 reaction test works

  1. Click, tap or press SPACE to begin.
  2. The lights come on one column at a time, one per second.
  3. When all five are lit, the test waits a random short time before they go out.
  4. As soon as the lights go out, click, tap or press SPACE.
  5. Your reaction time appears straight away. Press again to race again.

The random pause is there on purpose. In a real race start the lights also go out after a short unpredictable delay, so drivers cannot simply count to five and guess.

What is a jump start?

If you react while any light is still on, the test shows Jump start! and the attempt does not count. Just start again. Guessing never improves your time.

What is a good F1 reaction time?

Most people score somewhere between about 200 and 300 milliseconds on a visual test like this. Under 200 ms is quick, and very fast and consistent results are around 170 ms or below. Scores above 300 ms usually mean you were distracted, guessing or using a slower screen or input device.

Real Formula 1 starts are not directly comparable. Drivers react with their hands on a clutch paddle, with years of practice, and their start systems measure things differently. Use your own results to track improvement rather than to compare with drivers.

Your time also includes the delay of your screen, mouse or keyboard and browser, which can add a few to several tens of milliseconds. Compare your scores on the same device.

How to improve your reaction time

  • Watch the lights, not the button. Keep your eyes on the gantry and your finger resting on the mouse button or SPACE.
  • Do not anticipate. Wait for the lights to actually go out. Jump starts do not count, and guessing builds bad habits.
  • Warm up. The first few starts are often slower. Do a couple of practice runs first.
  • Use a fast screen if you can. A higher refresh rate shows the change sooner.
  • Rest well. Tiredness has a clear effect on reaction speed.

For a simpler reaction test with five timed tries, try our Reaction Time Test. You can also test your speed with the Aim Trainer or your clicking with the CPS test.

Frequently asked questions

How long do the lights stay on?

The lights come on one per second, then the test waits a random short time before they all go out, so you cannot predict the exact moment.

Can I use the keyboard?

Yes. Press SPACE or Enter to start and to react. Clicking or tapping also works.

Why is my time slower on my phone?

Touchscreens and mobile browsers often add a little input delay compared with a wired mouse and a desktop monitor.

Is my best time saved?

Your best time is saved in your browser on this device. Nothing is uploaded.