Online Timer With Alarm
Pick a duration in one click or set it down to the second, start it, and an alarm alerts you at the end. The time left also shows in the tab, even while you're working on something else.
- Sound alarm
- Presets
- Full screen
- No installation
100% private — Everything is processed directly in your browser: your files, voice, and image are never sent to Chatzam's servers.
How to use the timer?
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Choose the duration
Click a preset (1, 3, 5, 10, 15, 20, 30, 45, or 60 minutes) or enter a custom duration in hours, minutes, and seconds.
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Start the countdown
Start, pause, resume, or add a minute if needed. Full screen makes the display readable from across the room.
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Get notified
At zero, the alarm sounds with the chosen sound and volume. Also turn on notifications to be alerted even from another window.
A timer you won't forget about
Adjustable alarm
Several alarm sounds to choose from and an adjustable volume, so you can hear it from the next room.
Works in the background
Switch tabs or apps: the countdown keeps running and the time left stays visible in the tab's title.
+1 minute
Cake not quite done? Add a minute without starting over.
Nothing to install
No app or account: open the page on a computer, tablet, or phone and it's ready.
A kitchen timer always within reach
Soft-boiled eggs in 3 minutes, pasta in 10, a roast in 45: start the matching preset and keep cooking, the alarm will sound at the end. On a tablet propped up in the kitchen, full-screen mode shows a countdown in very large digits, readable from across the counter. And if the dish needs a bit more time, the +1 min button extends the timer without resetting it.
25-minute Pomodoro timer for focused work
The Pomodoro technique alternates 25 minutes of uninterrupted work with 5-minute breaks. Enter 25 minutes, start it, and keep an eye on the tab's title, which shows the time left while you work in another window. Turn on notifications to be alerted at the end of each session, then follow up with a 5-minute break. The timer is also useful for capping a task, a meeting, or screen time.
Sport, naps, class: a timer for everything
Time a plank or a stretching session, set a 20-minute nap, or project the timer full screen in class to show the time left for an exercise: everyone can see the countdown. To measure a duration that counts up instead of down, use our “Online Stopwatch”; to count the days until a specific date, our “Countdown Timer”.
Frequently Asked Questions
Does the timer sound if I switch tabs?
Yes. The countdown keeps running in the background and the alarm sounds at the end, as long as the tab stays open. The time left shows in the tab's title.
How do I set a 25-minute timer?
Type 25 into the minutes field of the custom duration, then start the timer. That's the classic length of a Pomodoro session.
Can I use the timer on my phone?
Yes, it works in your smartphone's or tablet's browser, with nothing to install. Keep the screen on and the sound turned on to hear the alarm.
Can I change the alarm sound?
Yes, several sounds are available and the volume is adjustable. You can also turn on a notification in addition to the alarm.
Is the timer free?
Yes, free, with no account and no usage limit. Once the page has loaded, it keeps running even if the connection drops.