Online Stopwatch

Supersimple online stopwatch to measure the amount of time that elapses between any activity. Our free online stopwatch is easy to use and milliseconds accurate.

00:00:00:000
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Reset

How to use the online stopwatch?

If you want to start the online stopwatch click on the ▶ (Start) button and the stopwatch immediately starts. If you want to pause or stop the watch click on the ▌▌ (Pause) button. If you want to start again the stopwatch without resetting the timer, click on the (Start) button again. If you want to start a new timer, then click on the RESET button then ▶ again. It’s so simple. The online stopwatch shows the current timer also in the browser’s title.

How accurate is the stopwatch?

Online stopwatch is milliseconds accurate. A millisecond is a thousandth of a second and 1000 milliseconds is one second. This means that if you are fast enough you can measure a housefly’s wing flap which takes only 3 milliseconds. In fact, this can not be measured because of the average human reaction time is 284 milliseconds.

 

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