Countdown Timer
Set minutes and seconds, start the countdown, and get a clear alert sound when it hits zero — works even in a background tab.
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A Timer That Actually Alerts You
Type or dial in hours, minutes and seconds, press start, and watch the countdown run — the browser tab title updates too, so you can see the remaining time even while working in another tab. When it reaches zero, an audible chime plays (generated locally, no audio file to load) and the page flashes so you notice.
Use it for cooking, workout intervals, timed tests, Pomodoro-style focus sessions or reminding yourself to stand up. Pause and resume anytime; reset to set a new duration.
Frequently Asked Questions
Will I hear the alarm if I am in another tab?
Yes — the alert sound plays from this tab regardless of which tab is focused, as long as the browser tab itself stays open (not closed).
Does the countdown pause if my laptop sleeps?
It pauses along with the system, like any browser timer — when you wake the device, if time has already passed the target it will show zero and alert immediately.
Can I set hours, not just minutes?
Yes — hours, minutes and seconds are all available, so it works for anything from a 10-second buzzer to a multi-hour countdown.
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Countdown Timer