⏱️ Utilities

Stopwatch

Online stopwatch with hundredths precision, laps and history. Works in the browser with no installation.

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How to use the stopwatch?

To kick off the count, click Start. The Lap button records split times without halting the stopwatch, which fits training sessions and races nicely. And Pause suspends the count; just click again to pick up where you left off.

It all runs in your browser, accurate to the hundredth of a second.

Online stopwatch with laps

Timing a workout, a presentation or any task gets a lot more practical with a stopwatch at hand, without you having to dig for the phone app. This one runs right in the browser, accurate to hundredths of a second, and starts counting the instant you click.

Beyond start, pause and reset, it records laps. Each mark saves a split time without stopping the count, which helps a lot when you want to compare exercise sets, rounds or stages of a process. The history stays visible so you can review every split at the end.

Since everything happens locally, you just leave the tab open. There's no install and no sign-up, and the stopwatch keeps counting as long as the page is loaded.

Frequently asked questions

Does the stopwatch lose time if I switch tabs or minimise the window?

No. Elapsed time comes from the difference against the system clock on every refresh, not from adding up screen updates. Browsers slow the refresh rate of background tabs, so the number may look frozen or jump when you come back, yet the value on screen stays correct. Closing or reloading the page is what wipes it.

Does a lap show the split since the last mark or the running total?

Both. Each line carries the split since the previous lap and, beside it, the total since the start, with the newest mark at the top of the list. The lap button only works while the clock is running, and reset clears the whole list. Nothing is saved, so write the splits down or screenshot them before resetting or reloading.

Are the hundredths precise enough for official race timing?

Not really. The time base is the system clock, accurate to the millisecond, but the person pressing the button adds two to three tenths of a second of reaction delay, far more than the precision shown on screen. For training, talks, cooking or study that gap is irrelevant; competition needs gear with an electronic start.

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