Online stopwatch and countdown timer
The stopwatch counts up to hundredths of a second with lap times — for sports practice, cooking, speed tests and lab experiments. The countdown timer counts down from any minutes and seconds and beeps when time is up; use the 25-minute preset for Pomodoro study sessions, or 1 hour for mock tests (the exam timer has a full-screen mode).
Notes
- Timing continues while the tab is in the background; phones may pause it if the screen locks for long.
- Laps show both the split (since the last lap) and the total elapsed time.
- Nothing is uploaded — it all runs in your browser.