Time is Up!
Your countdown has finished.
Set Custom Time
About This Countdown Timer
This free online countdown timer lets you set any duration and alerts you when the time is up. Use the quick presets for common intervals or set a custom time with the hour, minute, and second steppers. Enter fullscreen mode to keep the timer visible from across the room. The timer runs entirely in your browser -- no downloads or sign-ups required.
Common Uses
Cooking
Time your eggs, pasta, or baking perfectly every time.
Workouts
Track rest periods and exercise intervals for HIIT or strength training.
Studying
Pomodoro-style focus sessions with timed work and break intervals.
Presentations
Keep talks on track with a visible countdown in fullscreen mode.
Privacy & Limitations
- All calculations run entirely in your browser -- nothing is sent to any server.
- Results are estimates and may vary based on actual conditions.
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Countdown Timer FAQ
Does the countdown timer work in fullscreen?
Yes. Click the fullscreen button to expand the timer to fill your entire screen. This is ideal for presentations, classrooms, or keeping the timer visible from across the room.
Will the timer alert me when it finishes?
Yes. When sound is enabled, a pleasant chime plays through your speakers or headphones when the countdown reaches zero. The timer also shows a visual completion animation.
Can I set a custom duration?
Absolutely. Use the hour, minute, and second steppers below the timer to set any duration up to 23:59:59. You can also use the quick presets for common intervals like 1, 5, 10, 15, 30, or 60 minutes.
Does the timer keep running if I switch tabs?
Yes. The timer uses a time-based calculation rather than simple interval counting, so it remains accurate even when the browser tab is in the background. The page title also updates so you can see the remaining time on the tab.
Is this timer accurate?
The timer is accurate to within one second. It recalculates remaining time on each tick using the system clock, preventing drift that can occur with setInterval alone.