Browser stopwatch with laps
A simple stopwatch with lap timing, running entirely in this tab.
Runs entirely in your browser. Nothing you do here is sent to a server.
Fullscreen
00:00:00.00
Running entirely in this tab. Nothing is sent anywhere.
01
Press Start
The timer begins counting up immediately.
02
Pause and resume as needed
Pausing doesn't lose your progress. Resuming continues from where you left off.
03
Record laps
Each lap shows both its total elapsed time and the delta since the previous lap.
Frequently asked
Does the stopwatch keep running if I switch tabs?
Yes. The elapsed time is measured from real timestamps, not by counting ticks, so switching tabs or the browser throttling background timers doesn't cause it to lose time.
What does Reset do?
Reset stops the stopwatch and clears both the elapsed time and the lap list back to zero.
How precise is the display?
The display updates roughly every 50 milliseconds and shows time down to hundredths of a second (HH:MM:SS.cc).