Online Stopwatch with Lap Times

How to use the online stopwatch

Start kicks off the count. Use Lap to mark a split while the clock keeps running. Stop pauses; Reset clears.

Common questions

Does it keep counting if I switch tabs?

Yes. The elapsed time is calculated from the moment you pressed Start, so an inactive tab does not slow the count down.

Will I lose my laps if I refresh the page?

No. The elapsed time and lap list save in this browser; they reload with the page.

What's the smallest unit it tracks?

Tenths of a second (0.1 s). Smaller intervals are hard to read live, and the timing of your finger press dwarfs the difference anyway.

Can I copy the lap list as text?

Highlight the table and copy. The values land in your clipboard in the same order you saw them.

Tips

Three or more laps, and the fastest goes green and the slowest red. The space bar starts and pauses if you're on a keyboard, handy when one hand is busy.

When to use a stopwatch over a timer

A stopwatch counts up. You decide when to stop. It's the right tool when you want to know how long something took: a run, a pour-over recipe where the right time depends on how the pour looks, a speech you're reading aloud to check it fits, or each turn in a board game. Reach for a timer instead when you have a deadline to hit.