Countdown Timer Online

A clear online countdown timer with hours, minutes and seconds, quick presets, a progress display, a finish alarm and a flashing tab title.

00:00
Presets:

A big, readable countdown makes any timed task easier to manage. Set hours, minutes and seconds — or tap a preset like 1, 5, 10, 25 or 60 minutes — and start. The remaining time shows in large digits with a progress indicator draining as time passes. When the countdown finishes, an alarm sounds using your device's audio and the browser tab title flashes, so the finish gets noticed even if you have switched to another tab or app.

Built for Focus Sessions and Everyday Timing

The 25-minute preset suits Pomodoro-style study and work sprints, with shorter presets for breaks. In the kitchen it minds cooking times; in the classroom it keeps activities on schedule; presenters use it to hold their slot. Pause and resume handle interruptions, and reset returns to the last duration so a repeated interval takes one click. The timer runs entirely in the page, so it works on any phone, tablet or computer without installing an app.

How to Set the Timer

  1. Enter hours, minutes and seconds, or choose a preset.
  2. Press start and watch the countdown and progress bar.
  3. Pause if you need to, resume when ready, or reset to begin again.
  4. Listen for the alarm at zero and check the flashing title.

Practical Notes

Keep the tab open — browsers may throttle timers in fully closed pages. If your device is muted or the browser blocks audio until you interact, start the timer with a tap (which you do anyway) and the alarm will be allowed. For very long countdowns, a plugged-in device avoids battery-saver interference.

Frequently Asked Questions

Does the timer keep running if I switch tabs?

Yes. The tab title shows and flashes the status, and the alarm still sounds when the countdown completes.

Can I run several timers at once?

Open the page in additional tabs, one timer per tab, and each runs independently.

Why did the alarm not play?

Check the device volume and whether the browser tab was muted. The flashing title is the silent backup signal.

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