Stopwatch
A stopwatch with laps
Start, stop, lap, reset. Millisecond resolution, lap splits with the difference from the previous one, and the whole list copyable as text.
Questions people ask
The things that come up about stopwatchs, answered plainly.
How accurate is it?
It reads the browser's monotonic clock, so it is not affected by the system clock changing under it. Display resolution is 10 ms; the underlying measurement is finer, though browsers deliberately coarsen sub-millisecond timing as a security measure.
What is a lap versus a split?
A lap is the time since the previous lap; a split is the total elapsed at that point. Both are shown for every row, since which one you want depends entirely on what you are timing.
Related tools
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