Online Stopwatch

A precise online stopwatch with lap times.

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About the Online Stopwatch

Online Stopwatch measures elapsed time to the hundredth of a second with start, pause, lap and reset controls. Lap times show both the total and the time since the previous lap.

How to use the Online Stopwatch

Click "Start" or press the space bar.
Click "Lap" to record split times.
Pause or reset when you are done.

Frequently asked questions

Does it keep running in the background?

Yes. Timing is based on the system clock, so it stays accurate when you switch tabs.

Is there a time limit?

No practical limit.