Online Stopwatch
Time anything to the hundredth of a second, record laps and export them as CSV.
Space start / stop · L lap · R reset
Laps
Press Lap while the stopwatch runs to record a split.
How to use the stopwatch
Press Start to begin timing and Stop to pause. Lap records a split without stopping the clock. The table lists each lap time next to the running total, with the fastest lap in green and the slowest in red. Reset clears the time and the laps.
Keyboard shortcuts
The Space bar starts and stops the stopwatch, L records a lap and R resets. The shortcuts work anywhere on the page outside a text field, and full screen mode keeps them active.
Accuracy and saved state
The stopwatch measures time against the system clock instead of counting screen updates, so a slow device or a background tab leaves the result unchanged. The display shows hundredths of a second. The start time and the laps are saved in the browser, and after a reload or a reopened tab the stopwatch continues from the same start time.
Export laps
Copy CSV puts the lap list on the clipboard, ready to paste into a spreadsheet. Download CSV saves the same data as a file. Each row holds the lap number, the lap time and the total time.