Online Stopwatch
A clean, no-nonsense stopwatch that runs right in the browser tab — start, stop and reset with a click.
Runs locally — nothing you enter is sent
Utility
Free · no signup
00:00:00
How to use
- Click Start to begin timing.
- Click Stop to pause; Start resumes.
- Click Reset to return to zero.
Privacy
This tool runs entirely in your browser. Nothing you enter or open is sent anywhere. Privacy policy.
Limitations
- Background tabs may be throttled by the browser; for long measurements keep the tab visible or foregrounded.
FAQ
Does the stopwatch keep running if I switch tabs?
Yes in most desktop browsers, but aggressive mobile power saving can throttle background tabs. Keep the tab in the foreground for critical timing.