online stopwatch
start, stop and record laps with centisecond precision. press space to start or stop and l to lap.
runs on your device · free · no sign-up
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frequently asked questions
how accurate is it?
it measures real elapsed time from the browser clock, so it stays accurate even if the tab is in the background.
how do laps work?
each lap shows the split since the previous lap and the total time. the fastest and slowest laps are highlighted.
is my data stored?
the running time is kept only on this device so a refresh does not lose it. nothing is uploaded.