ReflexLab

F1 Start Test

Best—Avg—Rank—

F1 Reaction Time Test

Test your reaction time on a race start. Five red lights, a random hold, then lights out. F1 drivers react in 0.2 to 0.3 seconds. See how close you get.

Starts per session
Input Method

Five red lights come on one at a time. When they all go out, click as fast as you can.

Click to start

Best Start

—ms

Your fastest session average

Complete a session to set your best start.

Average Start

—ms

Across 0 sessions

Complete a session to see your average.

Milestones

  • ✗
    Under 400 msClean start
  • ✗
    Under 300 msQuick off the line
  • ✗
    Under 250 msSharp
  • ✗
    Under 200 msDriver territory
  • ✗
    Under 150 msAlmost nobody

Trend

Complete a session to see your trend graph

History

Complete a session to see your history

What is an F1 reaction time test?

An F1 reaction time test copies the start of a Grand Prix. Five red lights come on one second apart. They hold. They go out. The moment they go dark you click, and ReflexLab reports the gap in milliseconds.

The sequence follows the FIA sporting regulations: one second between each light, then lights out at the starter’s discretion. F1.com puts the hold at a random 0.2 to 3 seconds, and that is the window this test uses.

This is an independent practice tool with no official standing. It copies the sequence because the sequence is the point: the fixed four-second ramp invites you to guess, and the random hold punishes the guess. If you want the plain version with no ramp, take the reaction time test.

How this F1 reaction time test works

  1. Choose your settings

    Pick how many starts make a session (1, 3, 5, or 10) and whether you react with a mouse click or the spacebar. Your choices save automatically.

  2. Start the sequence

    Click the test area or press Space. The first light comes on at once, then one more every second until all five are lit.

  3. Hold

    After the fifth light, nothing happens for somewhere between 0.2 and 3 seconds. Keep still. Any input while a light is lit is a jump start.

  4. Lights out

    All five go dark at once. Click or hit Space as fast as you can. The timer runs from the lights going out to your input.

  5. Review your session

    After the last start you see every time, your session average, and whether you set a new best. Milestones and your trend graph update below the test.

Jump starts: moving before the lights go out voids that start and you run it again. The session summary counts how many you made. There is no other penalty, which is more lenient than the stewards.

What is a good F1 reaction time?

Nobody has measured a big group of people on a lights-out test like this one, so we won’t invent an average. We can still give you a scale.

In the lab, people react to a light coming on in about 231 milliseconds (Woods et al., 2015). A light going out is a slower cue: the one study that checked found a gap of roughly 30 to 70 milliseconds (Sokolova et al., 2013). Your screen and mouse then add a few milliseconds of their own.

Put that together and your number here will sit above your score on the plain reaction time test, which is normal.

The milestones below are built on those figures, from a clean start under 400 milliseconds to driver territory and beyond. Each one takes real improvement to clear. They measure your progress rather than ranking you against everyone else.

Almost nobody< 150 msThree standard deviations under the lab average, on a slower task, through a browser.
Driver territory< 200 msThe figure quoted for race starts, measured a different way. See the next section.
Sharp< 250 msAround the lab average for a light coming on, before the lights-out penalty.
Quick off the line< 300 msA clean reaction on ordinary hardware, lights-out penalty included.
Clean start< 400 msYou waited for the lights and reacted to them. Hesitation lands above this.

How fast are F1 drivers off the line?

F1.com says drivers launch about 0.2 seconds after the lights go out. Jon Malvern, a performance coach at McLaren, puts a typical start reaction between 0.2 and 0.3 seconds. The fastest widely reported start is Valtteri Bottas at the 2017 Austrian Grand Prix: 0.201 seconds from lights out to the car moving, a figure the FIA measured after rivals suspected a jump start (Motor Sport Magazine).

Those numbers measure something different from a click. The reaction time shown on race broadcasts runs from lights out to the driver dropping the clutch paddle to its bite point, according to Rob Smedley, who led the system’s development for F1. The 2017 figure ran to the car moving. Both include a physical action in a car, with the driver’s hands already loaded on the paddle. A 230 on this page and a 0.23 on the broadcast are two different clocks. Treat the driver figures as a reference point, not a scoreboard.

Jump starts, here and on the grid

Here, any click or key press while a light is lit is a jump start. The attempt is voided, the counter ticks up, and you go again. Guessing the hold is the usual cause: with a window anywhere from 0.2 to 3 seconds, a guess lands early more often than it lands fast.

On the grid the regulations are stricter. A car has to stay stationary from the third light until the lights go out, and a transponder on the car detects movement over a small, undisclosed distance. The stewards can hand out a five or ten second penalty, a drive-through, or a stop-and-go. The tolerance stays secret so teams cannot tune their launches to sit just inside it.

Track your F1 start times

ReflexLab saves your best start, session history, trend graph, and milestones. Your browser keeps all of it; we never see your results.

Best Start

Your fastest session average, shown beside every new result. Beat it and the number updates on the spot.

Trend Graph

Your average across your last 20 sessions, plotted. One fast session is luck. A line that slopes down is practice.

Session History

Each session’s average and when you ran it, so you can see whether late-night sessions or a new mouse moved the number.

Milestones

Five checkpoints from under 400 ms down to under 150 ms. Once you clear one it stays cleared until you reset your data.

Privacy note: All your data is stored locally in your browser using localStorage. We don’t collect, transmit, or store any of your results on external servers. Use the Reset button in the toolbar to clear all saved data if needed.

How to get a faster start

Watch the lights

The lights going dark are the signal. Fix your eyes on the gantry, not on the text below it, and keep your finger resting on the button.

Don’t guess the hold

The hold is random inside a 0.2 to 3 second window. A guess that lands early costs you the whole start. Wait for the lights and take the honest number.

Cut hardware lag

A 60 Hz screen can add up to 16 ms before you see the lights go out, and a wireless mouse in power-saving mode adds more. Faster hardware does not make you quicker. It stops your equipment padding the number.

Get enough sleep

Poor sleep slows reaction time more than any setting on this page can make up for. Test when you’re rested so your sessions compare fairly.

F1 reaction time test FAQ

What is the average F1 driver reaction time at a race start?

F1.com says drivers launch about 0.2 seconds after the lights go out, and a McLaren performance coach puts a typical start reaction between 0.2 and 0.3 seconds. Both figures time the lights going out to a physical action in the car, either the clutch paddle reaching its bite point or the car moving, so they are not the same measurement as a mouse click on this page.

Why is my time slower here than on the regular reaction time test?

Two reasons. Reacting to a light going out is slower than reacting to a light coming on; one study measured the gap at 32 to 71 milliseconds. And the hold after the fifth light is short and unpredictable, which gives you less time to prepare than a plain test does. Compare your F1 scores with your other F1 scores.

Why did I get a jump start?

You clicked or pressed Space while at least one light was still lit. The attempt is voided, the session counts the jump start, and you go again. If it happens on a light coming on, you are guessing the hold rather than reacting to lights out.

How long do the lights stay on?

One second between each light, so the fifth comes on four seconds after the first. The hold after that is random, anywhere from 0.2 to 3 seconds. F1.com describes that window for real race starts; the FIA regulations only say the hold is at the starter’s discretion.

Does the F1 reaction time test work on mobile?

Yes. Tap the test area to start, then tap when the lights go out. Touch screens add latency compared with a desktop mouse, so compare phone scores with phone scores.

How is my data stored?

Your browser stores everything (best start, session history, trend, milestones, and settings) locally using localStorage. Nothing reaches any server, so your results stay private on your device and will not sync across browsers.

Disclaimer: ReflexLab is an independent site and is not associated in any way with the Formula 1 companies, the FIA, or any team or driver. F1, FORMULA ONE, FORMULA 1, FIA FORMULA ONE WORLD CHAMPIONSHIP, GRAND PRIX and related marks are trade marks of Formula One Licensing B.V. This test is for entertainment and personal tracking. Results depend on your hardware, browser, and display; for scientific or medical assessment, use calibrated laboratory equipment.

Reaction Time TestMeasure your visual reaction speed in milliseconds.Clicks Per Second TestMeasure how fast you can click, in clicks per second.Kohi Click TestThe classic fixed 10-second click test. Get your CPS and rank.Right Click CPS TestMeasure how fast you can right click, in clicks per second.Spacebar Speed TestMeasure how fast you can press the spacebar, in presses per second.Visual Memory TestMemorise the pattern and recall it. How many tiles can you hold?Aim TrainerHit 30 targets fast and clean. One score for speed and accuracy.