Countdown Timer

How to Use

1. Set your time using the inputs for hours, minutes, and seconds — or click a preset button.
2. Click Start to begin the countdown.
3. The progress bar depletes as time passes. The display shows the remaining time.
4. When the timer reaches zero, an alarm plays and a completion message appears.

What Is It?

A countdown timer counts down from a set duration to zero. It is used for cooking, workouts, study sessions (Pomodoro technique), presentations, and any timed activity. Our free countdown timer supports hours, minutes, and seconds, plays an alarm using the Web Audio API, and includes quick preset buttons for common intervals.

Why Use Our Tool?

• ✓Supports hours, minutes, and seconds — up to 99 hours.
• ✓Web Audio API alarm plays when the timer reaches zero.
• ✓Quick preset buttons: 1, 3, 5, 10, 15, 25 (Pomodoro) min, and 1 hour.
• ✓Accurate even when browser tab is hidden.

Frequently Asked Questions

• Does it play a sound when it finishes?
  Yes. The timer plays a simple beep sound using the Web Audio API when it reaches zero. You can also see a visual alert on screen.
• What is the Pomodoro preset?
  The 25-minute Pomodoro preset is based on the Pomodoro Technique — a time management method where you work for 25 minutes then take a 5-minute break.
• Can I set hours?
  Yes. The timer supports hours, minutes, and seconds — up to 99 hours.
• Does it keep running if I switch tabs?
  Yes. The countdown uses a timestamp-based approach so it stays accurate even if the browser throttles the tab.
• Is it free?
  Yes, completely free.

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