Online Stopwatch & Timer
Lap stopwatch and countdown alarm.
- 100% free
- No sign-up
- Runs in your browser
Time anything, right in your browser
Use the stopwatch to time runs, speeches or experiments, with lap splits. Switch to the countdown for cooking, exams, workouts or a 25-minute Pomodoro.
Times are measured with your browser's high-resolution clock, so they stay accurate even if the tab is busy.
- 1
Pick a mode
Stopwatch or timer.
- 2
Start
Or choose a preset.
- 3
Lap, pause or reset
Hear a beep when time's up.
Frequently asked questions
Does the timer keep running in another tab?
Yes. It's based on the real clock, so switching tabs doesn't make it drift.
Why didn't the alarm make a sound?
Some browsers block sound until you interact with the page — pressing Start counts.
Is my data uploaded anywhere?
No. Everything runs in your browser with JavaScript — nothing you type or open is sent to our servers.