Lights out, go!
F1 Reaction Test
An F1 reaction test times how fast you press after the start lights go out. This page uses F1-style start lights and is not affiliated with Formula 1.
Not affiliated with, endorsed by or connected to Formula 1, the FIA or any team.
A browser game for fun, not a medical, driving or safety test. Your results stay on your device unless you submit a score to the Hall of Fame.
Best 198 ms
Moderate · our bandWorst 254 ms · spread 56 ms
Your attempts varied a lot; try again with the same hand and device.
What 231 ms means
Your median is the middle of your five attempts; your best is the fastest one. Both are you plus your screen, input and browser. Compare them with your own runs on the same setup.
Hall of Fame
F1 reaction test, practice · median of 5 attempts, lower is better
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Best scores on this site, from browsers. Each run is checked against our rules for a human run; scores still depend on the device. How the Hall of Fame works · See all leaderboards
F1 reaction time: what your result means
This F1 test gives you two numbers from five attempts: your median and your best. The F1 starting lights are our own drawing: five lamps that come on one at a time, then go out together.
These bands are ours, chosen to make a number readable. They are not a percentile and not a published norm.
| Median | Band |
|---|---|
| under 150 ms | Very fast · your median |
| 150–199 ms | Fast · your median |
| 200–249 ms | Moderate · your median |
| 250–299 ms | Slower · your median |
| 300–399 ms | Slow · your median |
| 400 ms and up | Very slow · your median |
The headline is your median of five attempts, so one lucky or slow press does not decide it. Your best is shown beside it because it is the number people tend to share, but it is one attempt. Jump starts are counted and shown, and they do not change your median: a jump start only voids that attempt.
The same rules and the same bands apply on the reaction time test, so you can compare the two. Published figures, with their sources, are on the average reaction time page.
Why your F1 reaction test shows a jump start or a slow time
- Pressing on the last lamp. The lamps stay on for a random time after the fifth one. Wait for the F1 lights to go out, not for the fifth lamp.
- Key repeat. Holding Space repeats the key. The page ignores repeats, but release the key between attempts so each press is a new one.
- Bluetooth or wireless mouse. A wireless link can add delay that a cable does not. Try a wired mouse.
- 60 Hz display. The lamps can only go out on a screen refresh: up to 16.7 ms of waiting at 60 Hz, 6.9 ms at 144 Hz.
- Laptop trackpad. Tapping to click can behave differently from pressing the button. Use the same one every time.
- Hidden tab. If the tab is hidden during an attempt, the attempt is canceled and the lights start again when you return. Keep this tab in front.
F1 start lights: how the F1 reaction test works
A press starts an attempt. The five lamps come on one by one, a second apart. After the last lamp, the page holds for a random time from 200 to 3000 ms (our own choice), then turns all five off in the same screen frame. That frame is the signal, so you cannot learn the moment from the first four lamps.
The F1 reaction timer runs from F1 lights out, the frame where the lamps go off together, to your press, using the time stamp the browser put on your input. A press at any point before that is a jump start and the attempt repeats. Under 100 ms is treated as a guess, and no press within 3 seconds is a miss; three misses end the run. A hidden tab cancels the attempt. Nothing is subtracted for your screen, mouse or browser.
Daily start. The mode switch under the stage offers a daily start. Its five waits after the last lamp are worked out from the UTC date, so everyone gets the same sequence on the same day and a new one tomorrow. Your best of the day stays on this device unless you submit a score, and each day has its own Hall of Fame board. Practice stays the default, and daily runs are not added to your practice history.
A real race start is a reaction to the lights going out too, but it also involves a car, a clutch and race rules. This page measures the press only, and we do not compare you with any driver.
Read how this test measures for the sources of error and the rules behind each round.
F1 reaction test FAQ
What is a good F1 reaction time?
It depends on the setup, so no single number answers it. On this page our bands call a median under 150 ms very fast and 200 to 249 ms moderate. Those cut-offs are ours, not a published norm, and we do not compare you with any driver. For how published figures are chosen and why they differ, see average reaction time.
What counts as a jump start on this F1 reaction time test?
Any press after the first lamp comes on and before the lights go out, including a press stamped before the frame where they went out. That attempt is void, the jump start is counted, and you press again to repeat it. A press less than 100 ms after lights out is treated as a guess and also repeats; that cut-off is ours.
How does the F1 reaction test work?
Five lamps come on one at a time, one second apart. After the fifth lamp the page waits a random time between 0.2 and 3 seconds, then all five go out in the same screen frame. We time from that frame to your press, for five attempts, and show your median and your best.
Is this connected to Formula 1?
No. This page is not affiliated with, endorsed by or connected to Formula 1, the FIA or any team. "F1-style" describes the start lights, which are our own drawing. A real race start differs: it involves a car, a clutch and rules that a browser game does not have.
Can I use my phone?
Yes. Tap the panel to start and tap again when the lights go out. Touch screens can add delay of their own, so the page keeps phone runs apart from mouse runs in your history. Compare phone runs with phone runs.
What is the average F1 driver reaction time?
This page does not say. We found no driver figure from a source we could verify, so we state none and make no comparison between you and any driver. A real race start involves a car, a clutch and race rules, so a driver's figure and yours would not measure the same thing.
Is this an F1 reflex test?
Some people call it that. It times a button press after a change you can see, which makes it a game about reaction, not a nerve reflex exam. It is a browser game for fun, not a medical, driving or safety test.
F1 driver reaction time: what this page cannot tell you
People often search for F1 driver reaction time or Formula 1 reaction time. This page has no driver figures: we found none from a source we could verify, so it states none and does not compare you with any driver.
Your result is your own time on this setup: the gap between the lights going out and your press, with your screen, input device and browser in the chain. A real race start also involves a car, a clutch and race rules. If you searched for Formula 1 start lights or a formula 1 reaction test, this is a browser version of that idea. It is not connected to Formula 1.
Method v1.0 · Updated Nov 8, 2026