Stopwatch & timer
Start a stopwatch with laps, or set a countdown timer with an alarm. Times stay accurate even if you switch tabs. Press Space to start and stop.
| Lap | Lap time | Total |
|---|
Runs entirely in your browser. Nothing you enter is sent to a server.
Keyboard shortcuts
- Space — start / pause
- L — lap (stopwatch)
- R — reset
Accuracy
Times are measured from your device’s high-resolution clock rather than by counting ticks, so they stay accurate even if the browser slows down a background tab. The display updates when you come back. Keep the tab open (not just the screen) for the timer alarm to sound.
Studying or working in blocks? Try the Pomodoro focus timer. Counting down to a date rather than minutes? Use the countdown.
Frequently asked questions
Will the timer ring if I switch tabs?
Yes, as long as the tab stays open. Some phones pause web pages when the screen locks, so keep the screen on for important timers.
How long can the stopwatch run?
As long as the page is open — it shows hours once you pass 60 minutes.
Is there an alarm sound?
Yes. The timer beeps six times and vibrates on phones that support it.