Stopwatch
Start, stop, and lap a stopwatch.
00:00.0
Worked example
Start begins the clock. Lap records the time so far without stopping it. Stop freezes the clock, and Reset returns it to zero and clears the laps.
FAQ
- What does a lap store?
- The total elapsed time at the moment you press Lap, not the gap since the previous lap.
- Does it keep running in the background?
- It keeps time while the tab is open. A browser may slow timers in a background tab.
- How precise is it?
- The display updates about 20 times a second, from the browser’s performance clock.