Online stopwatch
Start timing instantly — accurate to a hundredth of a second, with lap times.
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About this stopwatch
This stopwatch runs entirely in your browser, so it starts the moment you press the button with nothing to install and no account to create.
Press Start to begin and Stop to pause; Resume picks up where you left off rather than starting over. Lap records a split without interrupting the running clock, which is what you want for timing repeated intervals like laps, sets or rounds. Reset clears both the clock and the recorded laps.
Timing is measured against your device’s clock rather than counted up frame by frame, so the elapsed time stays accurate even if you switch to another tab and the browser slows the page down in the background.