Online Stopwatch
A precise stopwatch with milliseconds, laps and a fullscreen view. Nothing is uploaded — it all runs on your device.
StopwatchReady
00:00:00.00
Using the stopwatch
Use laps to split a run into segments — training intervals, cooking stages, lab measurements or timed practice questions. Each lap keeps the total elapsed time as well as the split from the previous lap.
For a countdown rather than a count up, use the online timer; for structured work sessions, use the Pomodoro timer.
Frequently asked questions
- How accurate is this online stopwatch?
- Elapsed time is measured from the system clock rather than counted up, so the reading stays accurate to the millisecond even if the display refresh is delayed.
- How do lap times work?
- Press LAP while the stopwatch runs to record the current reading. Each lap is added to the list below with the split from the previous lap.
- Can I copy my results?
- Yes. Press Copy results to put the total time and every lap on your clipboard as plain text.
- Does it keep running if I switch tabs?
- Yes. The elapsed time is recalculated from real timestamps when you return, so nothing is lost.