Countdown Timer
Set a duration and count down to zero, with start, pause and reset controls.
How to use it
- Set the time Enter hours, minutes and seconds.
- Start the countdown Press Start; pause or resume any time.
- Reset when done Reset to set a new duration.
Examples
| Cooking | 5:00 |
|---|---|
| Short break | 15:00 |
About this tool
A countdown timer is handy for cooking, workouts, study sessions, presentations and any time you want a clear, visible count down to zero.
This timer tracks the actual end time rather than just ticking, so it stays accurate even if your device is busy or the tab is in the background. Set the duration, start, and pause or reset whenever you like. It runs entirely in your browser.
Frequently asked questions
Does the timer keep running if I switch tabs?
Yes. It tracks the real end time, so it stays accurate even if the tab is in the background.
Will it notify me when time is up?
The display changes to show that time is up. For sound or system notifications, keep the tab visible.
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Updated June 12, 2026