Timers & Lighting

Countdown Timer

Use Countdown Timer to count down a chosen period for cooking, workouts, classes, presentations, or a short deadline. Set the time yourself or choose a quick duration, then keep the countdown handy as you work.

Countdown Timer

In your browser
00:00:00

Browser timer · no audio

Continues across hidden tabs and sleep using the device wall clock. Clock changes affect deadlines; reload resets this session. No sound or permission prompts.

Countdown/Pomodoro use wall-clock deadlines; device clock changes affect remaining time. Stopwatch uses monotonic time; sleep behavior varies. Reload resets the active session. Pomodoro stores validated duration preferences only. No automatic sound or notification permissions.

F: fullscreen · R: reset · Space: start/pause timers outside inputs. Escape exits fullscreen. Tap a native fullscreen scene or press Tab for dismissible exit controls.

Enable JavaScript to use these local controls.

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This Countdown Timer is useful when you want a clear, on-screen way to pace a task without setting up a separate device. Before starting, decide how long the activity should take and whether you can keep the timer visible; it runs without audio.

How to use Countdown Timer

  1. Set the duration using the Hours, Minutes, and Seconds controls, or choose one of the Quick duration options: 1 min, 5 min, 10 min, or 25 min.
  2. Select Start to begin. Use Start again, or press Space outside the time inputs, to start or pause the countdown.
  3. To restart the current session, select Reset or press R. If you want a larger display, select Fullscreen or press F.
  4. In fullscreen, use Escape to exit. You can also select Exit fullscreen or Exit when those controls are shown. Tap the fullscreen scene or press Tab to reveal dismissible exit controls.
  5. Select Hide controls if you want the timer display without the controls on screen. Return to the controls when you need to change the duration or use a button.

When to use it

  • Cooking: Count down a baking, steeping, or resting period while keeping the timer visible in the kitchen.
  • Workouts: Time a short exercise interval or recovery period, then check the display when it ends.
  • Study sessions: Use 25 min for a focused work block, or choose a shorter duration for a quick review.
  • Classes and presentations: Keep a visible countdown nearby to help pace a lesson, practice run, or talk.
  • Short work deadlines: Set a specific time limit for a task and use pause if you need to stop the countdown temporarily.
  • Breaks and everyday routines: Choose 1 min, 5 min, or 10 min for a brief pause, tidy-up, or other small task.
  • Checking a time-limited activity: Use the timer as a simple first step when you need to manage a short interval, without relying on an audible alert.

Tips for a smoother countdown

For everyday timing, the presets are a fast way to start; use Hours, Minutes, and Seconds when you need a different duration. The Countdown Timer follows your device wall clock, including when the tab is hidden or the device sleeps, so the countdown is based on the deadline rather than requiring you to keep the page active.

Fullscreen can make the remaining time easier to see from across a room. Hide controls when you want a less cluttered view, and keep the page somewhere you can check it because this timer does not play sound. If you use Space to pause or resume, first make sure focus is outside the time inputs.

Limits to keep in mind

This browser Countdown Timer has no audio alert, so it may not suit a task where you cannot watch the screen or need to be notified from another room. Use a timer with a sound or vibration alert for that kind of situation.

The countdown uses your device wall clock, and clock changes affect its deadlines. Reloading the page resets the current session, so avoid reloading if you need to preserve a running countdown. For critical timing where these limitations matter, use a dedicated timer you can monitor reliably.

Frequently asked questions

How do I set a Countdown Timer?

Enter a duration with Hours, Minutes, and Seconds, or choose 1 min, 5 min, 10 min, or 25 min under Quick duration. Select Start to begin.

Can I pause and resume the countdown?

Yes. Select Start to pause or resume, or press Space when focus is outside the time inputs.

Does it keep counting in a hidden tab or while my device sleeps?

Yes. It follows the device wall clock while the tab is hidden or the device sleeps.

Will it make a sound when the countdown ends?

No. The timer has no audio, so keep the display where you can check it or use a timer with an alert when sound is needed.

How do I make the countdown bigger?

Select Fullscreen or press F. Press Escape to exit fullscreen.

What happens if I reload the page or change my device clock?

Reloading resets the current session, and changes to the device wall clock affect the countdown deadline.