Start Test
Click Tests
CPS Test Click Speed Test Jitter Click Test Butterfly Click Test Drag Click Test Kohi Click Test Right Click Test Minecraft CPS Test Click Counter
Timed CPS Tests
1 Second CPS Test 2 Second CPS Test 5 Second CPS Test 10 Second CPS Test 15 Second CPS Test 30 Second CPS Test 60 Second CPS Test 100 Second CPS Test
Mouse Tools
Mouse Test Mouse Button Test Double Click Test Scroll Test Mouse Polling Rate Test Mouse DPI Test eDPI Calculator Mouse Sensitivity Converter
Keyboard & Reflex
Typing Speed Test Keyboard Test Spacebar Clicker Spacebar Counter APM Test Reaction Time Test F1 Reaction Time Test Aim Test Target Click Test
Leaderboard Daily Challenge Blog FAQ Start CPS Test

F1 Reaction Time Test

Five red lights come on one by one. When they all go out, react as fast as you can — just like the start of a Formula 1 race.

—
Last
—
Personal Best
0
Attempts

Click to start. When all five lights go out, click as fast as you can.

An informal, entertaining browser test. Your display, mouse and browser add a few milliseconds of delay, so results are not comparable to real racing driver data.

How to use the F1 Reaction Time Test

  1. Click the start area. Five red lights switch on, one after another.
  2. Wait. After a short, random pause, all the lights go out together.
  3. Click the moment they go out. Your reaction time appears in milliseconds.
  4. Click too early and it is a false start — wait for the lights to go out and try again.

Understanding your results

Your reaction time is the gap between the lights going out and your click, measured with the browser's high-resolution timer. The random hold stops you guessing the moment. Typical visual reaction times fall between roughly 200 and 300 milliseconds, but screen refresh rate, mouse latency and alertness all change the number.

How an F1 race start works

At the start of a Formula 1 race, a row of five red lights comes on one by one at about one-second intervals. When all five are lit, there is a short, variable pause, and then the lights go out — that is the signal to go. The unpredictable pause is deliberate: it forces drivers to react to the lights going out rather than count down to it. This test copies that structure so that you can practise the same kind of reflex.

What reaction time is good?

Reaction timeRough level
Under 200 msExcellent (often needs a fast display and mouse)
200 – 250 msGreat
250 – 300 msGood / average
300 ms+Slower than average — often fatigue or distraction

For a plain colour-change version of this test, try the reaction time test.

Tips for a faster start

  • Keep your finger resting on the button, ready to press.
  • Look at the centre of the lights rather than at one bulb.
  • Do not anticipate. A false start costs more than a slightly slower reaction.
  • Use a high refresh-rate monitor and a wired mouse if you can.

Tips to improve

  • Take several attempts and look at your average, not just your best.
  • Avoid caffeine overload and distractions — alertness matters.
  • Play in a quiet space and focus on the lights.

Frequently asked questions

Clicking while the lights are still on, before they all go out.

So you cannot predict the moment. It tests real reaction rather than timing a rhythm.

Yes. A higher refresh rate shows the change sooner, which can shave off a few milliseconds.