Stopwatch and Lap Timer
Measure elapsed time and keep a list of lap splits on this device.
Bookmark this page
Keep this page handy for next time.
- On a computer
- Press Ctrl + D, or Command + D on a Mac.
- On a phone or tablet
- Open your browser's menu or Share menu and look for Add Bookmark, Bookmark or Add to favourites.
A bookmark saves the page link. Save any tool results separately.
Ready
Up to 500 laps. Reset or reload clears this session.
How to use this tool
- Start the stopwatch, record laps and pause when finished.
- Reset clears the in-memory lap list.
Things to know
- Uses the browser monotonic clock. Results are not a calibrated timing instrument and are lost on reload.
- At most 500 laps. One 32 ms UI interval while running, with cleanup on pause/reset/unmount. Reset drops the current lap array.
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