Online Stopwatch & Timer
A precise stopwatch with laps and a countdown timer with alarm — full screen and keyboard friendly.
| Lap | Lap time | Total |
|---|
Space start / pause · L lap · R reset · F fullscreen
Runs entirely in your browser — nothing is uploaded.
How to use the Online Stopwatch & Timer
Choose stopwatch or timer
Switch any time.
Start
Space to start/pause, L for lap.
Get alerted
Alarm sound and notification.
Why use our Online Stopwatch & Timer?
Stopwatch
Hundredths of a second with laps.
Countdown
Hours, minutes, seconds with presets.
Alarm
Sound plus browser notification.
Full screen
Big digits for classrooms and workouts.
Shortcuts
Space, R, L, F.
Keeps running
Even when you change tabs.
Frequently asked questions
Everything you need to know about the Online Stopwatch & Timer.
Back to the toolDoes the timer work in the background?
Yes. It uses the real clock, so it stays accurate when you switch tabs.
Will I hear the alarm?
Yes, if your device volume is on. You can also allow notifications.
Can I record laps?
Yes — press Lap or L. Export laps as text.
What are the shortcuts?
Space = start/pause, R = reset, L = lap, F = full screen.
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