Stopwatch
Track time with an online stopwatch. Features include start, stop, lap, and reset.
Stopwatch
Laps
No laps yet.
How to use the online stopwatch
A precise, browser-based stopwatch with start, stop, lap, and reset — nothing to install, nothing sent anywhere.
Features
- Start / Resume and Stop to control timing.
- Lap to record a split without stopping the clock.
- Reset to clear the time and lap list.
Accuracy
The stopwatch measures real elapsed wall-clock time on every tick rather than simply counting fixed intervals, so it stays accurate even if the browser tab is briefly throttled in the background. Once the elapsed time passes an hour, an hours segment appears automatically instead of the display wrapping back to zero.
Limitations
Timing only runs while this page stays open. Closing the tab or reloading resets it — there is no server-side timer to fall back to, by design, since nothing about your session is sent anywhere.
Privacy
Runs locally in your browser. No data is sent to the server.
FAQ
Does it keep running if I switch tabs?
Yes. It tracks real elapsed time rather than counting ticks, so switching tabs or briefly minimizing the window doesn't throw off the reading.
Can it track more than an hour?
Yes, an hours segment (HH:MM:SS) appears automatically once the elapsed time passes 60 minutes, and it keeps counting beyond 24 hours if needed.
Is my timing data saved anywhere?
No. Everything lives only in this page's memory and disappears when you close or reload the tab.