Online timer
Set a countdown in one tap, get an alarm when it ends, and keep the time in your browser tab.
05:00
How to use the online timer
- Tap a preset or enter hours, minutes and seconds.
- Press Start. Pause and resume at any time.
- Use full screen to show the countdown to a room.
About this tool
A timer for cooking, workouts, study sessions, meetings or the classroom. Tap a preset or enter any duration, and the remaining time also shows in the browser tab so you can switch to other work.
When the time is up, a short alarm plays and the screen flashes. The timer keeps accurate time even if your device throttles background tabs, because it counts against the real clock rather than adding up ticks.
Frequently asked questions
Will the alarm sound if the tab is in the background?
Yes, as long as the tab stays open and your device is not muted. Some phones pause web pages when the screen locks; keep the screen on for critical timings.
Can I set a timer longer than an hour?
Yes. Enter any number of hours, minutes and seconds.
Does the timer work offline?
Once the page has loaded it runs entirely in your browser, so it keeps working without a connection.
Is there a stopwatch too?
Yes, the stopwatch counts up with lap times. It is linked below.