Simple controls
Start, pause and reset elapsed time.
The Clock84 stopwatch is a retro-styled online chronograph for timing workouts, experiments, presentations and everyday tasks.
Start, pause and reset elapsed time.
Create lap and split records while the stopwatch is running.
Export lap times as a CSV file.
Elapsed time is based on a monotonic browser clock while running; browser background throttling may affect redraw frequency.
About privacy and browser storage →A stopwatch measures how much time has passed; a countdown timer starts with a set duration and counts down to zero. For interval practice, presentations and everyday experiments, choose the tool that matches your goal.
Elapsed time is based on the browser's monotonic clock so the count can catch up when the page updates again. Screen updates themselves may slow down while a browser is backgrounded.