Countdown Timer

Thinkforu.org Countdown Timer

Thinkforu.org Countdown Timer

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Quick Presets

User Guide

How to Use

  1. Enter your desired time using the input fields (Hours, Minutes, Seconds)
  2. Click "Start" to begin the countdown
  3. Use "Pause" to temporarily stop the timer
  4. Click "Reset" to clear the timer
  5. Use preset buttons for quick timer settings
  6. Click "Fullscreen" to view timer in fullscreen mode

Features

  • Mobile responsive design
  • Local storage saves your last used times
  • Share functionality to send timer links
  • Visual and audio notifications when timer completes
  • Customizable presets
  • Fullscreen mode for better visibility

Time Conversion Formula

Total Seconds = (Hours × 3600) + (Minutes × 60) + Seconds

Example: 1 hour 30 minutes = (1 × 3600) + (30 × 60) = 5400 seconds