Stopwatch
Elapsed time with laps.
Loading tool
Start, pause, and mark laps. Useful for intervals or timing a process at your desk.
How to use this tool
- Set the dates or duration. Pick the clocks, dates, or timer length you need.
- Start or calculate. Run the timer or read the difference. Time zones use this browser.
- Copy the result. Copy timestamps or calendar values into your notes.
Precision
The display uses performance.now for elapsed time. Background throttling can skip frames but the next paint catches up.
Frequently asked
Can I copy laps as CSV?
Yes. Each lap has a split and a total.
Is this official race timing?
No. Use certified equipment for sanctioned events.
Does it survive a refresh?
No. Refreshing resets it.
Can I run two stopwatches?
Open a second tab.
Are laps stored?
Only until you reset or leave.