What Is the Online Stopwatch?
The online stopwatch is a simple stopwatch that runs in your browser window. It measures elapsed time in hours, minutes, seconds, and milliseconds.
The tool lets you create laps (split times). You can also set an alarm to sound at specific intervals.
If you need to count down instead, use our online timer.
How Do I Use the Online Stopwatch?
- Click Start, Pause, and Continue or use the space bar to start and stop the watch.
- Click Lap to record split times in the table while the total duration keeps running.
- Click Reset when the stopwatch is paused to return to 00:00:00.
The Stopwatch Data shows lap times and the timestamp when each lap was recorded, based on your browser's time. The data is automatically saved to your browser. You can also click to download the data in CSV (spreadsheet) format.
Stopwatch settings
Click the gear icon in the top right to customize your stopwatch:
- Toggle dark mode on or off
- Show or hide milliseconds
- Show or hide the buttons in full-screen mode
- Set up recurring alerts with sounds
- Customize the stopwatch font size and the text and background colors
What Is the Online Stopwatch Used for?
Use the online stopwatch to
- Time your answers in an exam or quiz
- Track your personal bests when working out
- Time your presentation or speech
- Log time spent on a project
- ... or track time in any other situation
In full-screen mode, it becomes a stopwatch that everyone can see in a classroom or meeting.
Alternatively, use our full-screen online clock to show the time to everyone.