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Countdown Timer

Set a timer with an audible alarm — one-click presets for the durations you actually use, or any duration you like.

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How it works

A compact workflow from input to download.

1

Pick a duration

Use a preset — 5, 10 or 25 minutes — or enter any custom number of minutes.

2

Start

The countdown runs with a progress bar showing how much is left.

3

Hear the alarm

An audible alarm sounds when the timer reaches zero.

Frequently asked questions

Will the alarm sound if I switch tabs?
The countdown itself stays accurate regardless, because it is anchored to the system clock. Whether the sound plays depends on your browser's autoplay policy — interacting with the page first, which you do by starting the timer, generally satisfies it.
Why 25 minutes?
It is the standard Pomodoro interval — twenty-five minutes of focused work followed by a five-minute break. The technique is popular because the commitment is small enough to overcome procrastination and long enough to get properly into a task.
Can I use it as a kitchen timer?
Yes, and it is one of the most common uses. Just be aware that it lives in a browser tab, so closing the tab ends the timer — which is a genuine hazard if you are cooking and cleaning up your browser at the same time.
Does anything leave my browser?
No. Everything runs locally in your own browser tab — nothing is uploaded, logged or stored on any server, and closing the page discards it entirely.

Why a timer changes how you work

A countdown does something that a to-do list cannot: it converts an open-ended, intimidating task into a bounded, survivable commitment. 'Write the report' is a task with no floor and no ceiling, and the mind quite reasonably flinches from starting it. 'Work on the report for twenty-five minutes' is a promise you can obviously keep, and starting is the entire battle — once you are in, momentum usually carries you past the bell. The timer also creates a mild, useful pressure that suppresses the drift towards email and browser tabs, because the clock is visibly running. And it enforces the breaks that sustained concentration actually requires, which is the part most people skip and then wonder why their afternoons are useless.

The Pomodoro technique, briefly

Francesco Cirillo named the method after the tomato-shaped kitchen timer he used as a university student in the late 1980s. The mechanics are trivial: choose a task, set the timer for twenty-five minutes, work on that one task with no interruptions, then take a five-minute break, and after four such intervals take a longer break of fifteen to thirty minutes. The rules that matter are the strict ones — if you are interrupted, the interval is void, and if you finish early you use the remaining time to review rather than starting something new. The specific numbers are not sacred and plenty of people prefer longer intervals for deep work. What survives across all the variations is the underlying insight: bounded, single-task intervals with enforced rest beat unbounded, multitasking marathons, and it is not close.