Đếm Ngược Thời Gian

What is Countdown Timer?

Countdown Timer is a tool that helps you track time in seconds with precision. Perfect for cooking, workouts, study sessions, or any timed activity. It displays the countdown in hours, minutes, and seconds with real-time updates.

How to use Countdown Timer

Enter a timer name and the number of seconds, or click a quick preset (10s, 30s, 1 min, etc.). Click 'Add Timer' to start. Your timers are automatically saved and will persist even after you close the browser. Delete timers you no longer need.

Key Features

• Multiple simultaneous timers
• Real-time countdown updates every second
• Persistent storage with localStorage
• Hours, minutes, seconds display with zero-padding
• Quick presets (10s, 30s, 1min, 5min, etc.)
• Audio notification when timer expires
• Easy add/delete functionality
• Clean and intuitive interface
• Dark mode support

Use Cases

• Cooking and baking timers
• Workout and exercise intervals (HIIT, Tabata)
• Study sessions and Pomodoro technique
• Meditation and breathing exercises
• Presentation and speech practice
• Game timers and turn limits
• Task time tracking and productivity
• Tea and coffee brewing