Stopwatch
A precise stopwatch that runs right in your browser, with lap timing down to the centisecond. Start, pause, resume, and record laps with running splits. Nothing is sent to a server.
Precise timing
Tracks elapsed time down to the centisecond using your browser's high-resolution clock.
Lap tracking
Record laps while running to see both the cumulative time and the split since the previous lap.
Pause and resume
Pause at any point and resume later without losing your elapsed time.
Common Mistakes to Avoid
Closing the tab expecting the time to be saved
Solution:
The stopwatch runs only in your current browser tab — closing or refreshing resets it.
Confusing lap time with split time
Solution:
Each lap shows both the total elapsed time and the time since the previous lap — check which figure you need.
Frequently Asked Questions
It updates continuously using your browser's animation frame timer, accurate to the centisecond for practical use.
Yes — there is no limit on the number of laps you can record in a session.
Precise timing
Tracks elapsed time down to the centisecond using your browser's high-resolution clock.
Lap tracking
Record laps while running to see both the cumulative time and the split since the previous lap.
Pause and resume
Pause at any point and resume later without losing your elapsed time.