Countdown Timer and Stopwatch: With Alarm Sound (Free Tool)

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Countdown Timer and Stopwatch: With Alarm Sound (Free Tool)

Pomodoro sessions, cooking, presentations, workouts: sometimes you just need a countdown with an alarm, without installing anything or creating an account.

Updated August 12, 2026, after a fresh review, with updated visuals and links.

This one lives in your browser tab: countdown mode with a three-beep alarm, plus a stopwatch mode for the opposite direction. It keeps running while you work in other tabs.

Focused work with a timer
Photo by Markus Spiske on Pexels
Countdown
Stopwatch
10:00
Ready.
An alarm sounds when the countdown finishes. Keep the tab open.

Getting the most from it

The Pomodoro default: 25 minutes of focus, 5 minutes of rest, repeating. Set 25:00, work, hear the beep, set 5:00, rest, repeat four rounds.

Stopwatch mode is the opposite muscle: lap-free, simple elapsed time for workouts, practice sessions and speedruns.

The alarm uses your browser's audio: it plays three clean beeps even if you're in another app, as long as this tab stays open.

Worth remembering

  • Meeting hack: keep presentations honest by setting 50 minutes when the slot says an hour: the last ten are then guaranteed for questions.
  • Pin the tab (right-click the tab, Pin) so the timer survives window reorganizations and stays one glance away.

Frequently asked

Will the alarm sound if I switch tabs?

Yes: the timer and its alarm keep running as long as this browser tab remains open, even in the background.

Does it work offline?

Once the page is loaded, yes: everything runs locally in the tab.

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