F1 Start Timer recreates the lights-out cue in a free browser reaction test, helping racing fans compare attempts and track a more useful multi-run average.
External tool opens in a new tab.
What is this tool?
Test your reaction time with an F1-style five-light start sequence, instant timing, false-start detection, and repeatable browser practice.
Best for
Racing fans and casual players who want a quick visual reaction test on desktop or mobile.
Pricing note
The reaction test is free and requires no account. Results vary with display refresh rate, input device, browser, and attention.
Key features
Use cases
Warm up visual reactions before a racing game session.
Compare mouse, keyboard, and touch response times on different devices.
Run several attempts and use the average instead of judging one lucky result.
Pros
Cons
How to use
Open the F1 Start Timer official site from this detail page.
Start a round and wait while the five red lights illuminate.
Click, tap, or press only after all lights go out.
Repeat several rounds and compare your average reaction time.
FAQ
Is F1 Start Timer free?
Yes. The browser reaction test is free and does not require an account.
What counts as a good reaction time?
Around 200-250 ms is a strong casual browser result, while device latency can make direct comparisons unreliable.
Why was my attempt marked as a false start?
You reacted before the lights-out signal. Wait until every red light disappears before clicking or tapping.
Does it work on mobile?
Yes. Touch input works on mobile, although screen and touch latency may differ from a desktop setup.
Is this official Formula 1 timing?
No. It is a fan-made reaction game, not an official live timing or telemetry service.
