Online stopwatch with laps
Start, pause and record laps with one key. The digits are large enough to read across the room, and the stopwatch keeps exact time even if you switch to another tab.
Keyboard shortcuts
- Space starts and pauses the stopwatch.
- L records a lap, R resets.
- F toggles fullscreen.
- C, T and S switch between clock, timer and stopwatch.
Questions
How precise is it?
It shows hundredths of a second and measures time from the system clock, so it does not drift when the tab is in the background.
Are my laps saved?
Laps stay on screen until you press Reset. They are not sent anywhere.
Can I use it on my phone?
Yes, the page works on mobile browsers too.
Clock Tab
Open it on a projector, a second monitor or a classroom TV. Press F for fullscreen and the screen stays awake. Want it on every new tab? Add the free extension.
Add to Chrome, it's free Also works in Edge, Brave and Opera. No sign-up.