Start, pause and reset a precise stopwatch right in your browser, and record lap times to track splits along the way.
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This stopwatch runs entirely in your browser using your device's clock, so timing stays accurate even if the page redraws slowly. Press Start to begin timing, Pause to freeze the count without losing it, and Resume to continue from where you left off.
Use Lap while the stopwatch is running to record a split time. Each lap shows both the time since the previous lap and the total elapsed time at that moment, useful for tracking intervals during a workout, a presentation rehearsal, or any timed activity.
Starting the stopwatch and pressing Lap at 1:15, 2:40, and 3:50 records three laps: the first shows a 1:15 split (1:15 total), the second shows a 1:25 split (2:40 total), and the third shows a 1:10 split (3:50 total), letting you compare how each interval performed against the others at a glance.
Closing the browser tab expecting the stopwatch to keep running in the background, once the tab is closed, the timing session ends, this only stays accurate while the page remains open, even in a background tab.
Confusing the per-lap split time with the cumulative total time, both are shown for each lap, mixing them up when comparing interval performance can make a fast lap look slow or vice versa.
Forgetting that Reset clears recorded laps permanently, if you need to preserve a set of lap times, note them down before resetting, since there's no way to recover them afterward.
Yes, the timer is based on the actual start time rather than a simple counter, so it stays accurate even if you switch tabs or the browser throttles background timers.
Yes, press Lap as many times as you like while the stopwatch is running. Each lap is added to the list along with its split and cumulative time.
Yes, Reset clears the elapsed time back to zero and removes all recorded laps.
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