倒计时器
在线倒计时器，支持自定义时长，时间结束时发出提示音，界面简洁无干扰。
相关关键词
How to Use Countdown Timer
A countdown timer is one of the most practical productivity tools available. Whether you use the Pomodoro technique (25-minute focus sessions), need a kitchen timer while cooking, want to stay on schedule during a presentation, or just want to be reminded when a specific duration has elapsed, our Countdown Timer delivers a clean, distraction-free experience. Set any duration from seconds to hours, and watch the animated ring shrink as time passes. When the timer reaches zero, a beep plays through your browser's audio system to alert you even if you're looking at another tab. Use preset buttons (1 min, 5 min, 10 min, 25 min, 1 hour) for common durations, or pause and resume the timer mid-session.
- 1
Set the duration
Enter hours, minutes, and seconds in the input fields, or click one of the preset buttons (1 min, 5 min, 25 min, etc.).
- 2
Start the timer
Click the Start button. The circular progress ring begins counting down.
- 3
Pause or reset
Click Pause to halt the countdown and Resume to continue. Click Reset to start over with a new time.
Frequently Asked Questions
Does it make a sound when time is up?
Yes. When the countdown reaches zero, the timer plays a short beep tone using the Web Audio API. Make sure your device volume is not muted.
Does the timer continue if I switch to another tab?
Yes. The countdown uses JavaScript's setInterval in the background, so it keeps running even when you switch browser tabs.
Can I set a timer for more than an hour?
Yes. The hours field accepts values up to 99 hours, making it suitable for long tasks as well as short sprints.