Stopwatch and Lap Timer
00:00.000
About this tool
Measure elapsed time and record individual lap times.
Privacy
Your input is processed locally in your browser and is not uploaded.
Frequently asked questions
Is my input uploaded?
No. The tool works locally in your browser.
Does it work on mobile?
Yes. It is designed for phones, tablets, and desktop browsers.
Are the results exact?
The calculations follow the displayed inputs and standard formulas; real-world tolerances and local rules can differ.