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Countdown Timer

time

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1. How to Use

  1. Enter hours, minutes, and seconds manually or click a preset button (5 min, 10 min, 15 min, 30 min, 1 hour).
  2. Click the green play button to start the countdown. Click again to pause.
  3. When the timer reaches zero, you'll see a modal, hear a sound (if enabled), and receive a browser notification.
  4. Use the sound button to toggle audio alerts on or off.

2. How It Works

The timer computes endTime = Date.now() + duration. Every 100ms it checks remaining = endTime - Date.now() and updates the display.

Progress is shown as a circular ring and a bar. Color shifts to amber at 75% and red at 90% remaining.

On completion, a modal opens, an audio file plays (if enabled), and the Notification API is used for browser alerts.

3. About Countdown Timer

Free online countdown timer with preset options and notification alerts. Ideal for cooking, workouts, Pomodoro sessions, and time management.

4. Advantages

  • Preset times: Quick 5–60 minute options.
  • Visual progress: Circular and bar progress indicators.
  • Multiple alerts: Modal, sound, and browser notifications.
  • Pause and resume: Full control during the countdown.

5. Real-World Use Cases

  • Cooking: Time recipe steps and baking.
  • Pomodoro: 25-minute focus with 5-minute breaks.
  • Workouts: Interval and rest period timing.
  • Meetings: Keep discussions on schedule.