Online stopwatch
Measure elapsed time precisely and record laps while the stopwatch keeps running.
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How the stopwatch works
The stopwatch counts the time elapsed since you press 'Start'. You can pause it at any point and resume from where you left off.
The 'Lap' button records the accumulated time at that instant without stopping the stopwatch — handy for splitting a run or counting exercise reps.
Worked example
If you start the stopwatch and press 'Lap' at 0:45 and again at 1:30, both marks appear in the lap list while the total time keeps running.
Frequently asked questions
- Does the stopwatch keep running if I switch tabs?
- Yes. Time is calculated from the system clock, so it stays accurate even if the tab is in the background.
- Can I save the laps when I finish?
- Laps stay visible on screen until you reset the stopwatch; exporting them to a file isn't supported yet.
- How many laps can I record?
- There's no practical limit — press 'Lap' as many times as you need.
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