When to use online stopwatch
A stopwatch is useful for practice rounds, short experiments and repeated activities. Record a lap without stopping the main clock, then compare the intervals in the table. Display updates use elapsed timestamps, so the displayed result is not based on counting animation frames.
How it works
- Start the stopwatch.
- Record laps during the activity.
- Pause to review total and lap times, or reset to begin again.
Try this example
Lap timing
Before you export or rely on the result
Device clock behavior and background suspension can affect timing. This is a convenient browser tool, not certified sports or laboratory timing equipment.
Does this tool upload my input?
No. This tool processes input in your browser. Optional advertisements are separate third-party content and load only when you allow ads. See the privacy notice for hosting logs and advertising details.
Can I use the result without creating an account?
Yes. Online Stopwatch is free to use without an account. Review the result against the limits above and the requirements of the app or document where you plan to use it.