Online Stopwatch — free, no install
You need to time something and the clock on the wall just won't do. Maybe it's a workout, a kettle, a quick study sprint, or a kid asking how long they can hold their breath. We added a free tool that handles it — Online Stopwatch — right in your browser.
What it does
It counts up in hours, minutes, seconds and even centiseconds, so you catch the fast moments too. Press start, and you can pause and pick up again, reset to zero whenever you like, and tap lap to mark each round without stopping the clock.
Nothing leaves your device
The stopwatch runs entirely in your browser. There's nothing to install, no account, and nothing is uploaded or saved anywhere. When you close the tab, it's gone — it's just a clock that lives on the page.
How to use it
- Open Online Stopwatch and press start.
- Use pause to take a break, lap to mark a round, and reset to go back to zero.
- Read your time, and note your laps when you're done.
It's free with no limit. There are more small tools on the Apps page.