About
About F1 Start Timer
F1 Start Timer is a free browser reaction test built around the pressure of waiting for start lights to go out. It gives you three attempts, records your best valid reaction time, and lets you compare clean starts with friends.
What the tool measures
The timer measures the delay between lights out and your click, tap, or Space key press. It is designed for practice and entertainment, not professional timing. Your device, browser, input hardware, and screen refresh rate can all affect the number you see.
Editorial approach
Guides on this site focus on practical interpretation: what a reaction-time range means, why false starts happen, and how hardware latency changes browser results. Pages are kept short so the game stays first and the explanation is easy to scan.
Unofficial project
F1 Start Timer is an independent fan-made project. It is not affiliated with, endorsed by, or connected to Formula 1, the FIA, or any racing team.