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Countdown Timer

Set any duration. Audible cue when it hits zero.

Press F for fullscreen
05:00
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About Countdown Timer

A configurable countdown timer with oversized digits. Set any duration from one second to 99 hours, start, pause, and reset with keyboard shortcuts. An audible chime sounds when the timer hits zero. Designed for projection — the numbers are large enough to read from the back of a gym or classroom.

Countdown Timer for Any Duration

Set any countdown from seconds to over 99 hours using the input field or keyboard shortcuts. The display fills the screen with high-contrast digits readable from any distance. Use it for cooking, presentations, game shows, gym circuits, or any scenario where a visible countdown matters. Press F for fullscreen and the timer occupies the entire display with no browser chrome. The audible alert at zero ensures the room knows time is up even if they are not looking at the screen.

Events, Competitions, and Game Nights

Event organizers project the countdown timer during quiz bowls, debate rounds, cooking competitions, and board game turns. The large-format digits eliminate disputes about remaining time. Party hosts use it for timed challenges like charades, Pictionary rounds, or trivia contests. The reset button lets you run back-to-back rounds without re-entering the duration. Streamers use it for timed giveaways and subscriber milestone countdowns.

Pro Tip: Keyboard-First Operation

Start, pause, and reset entirely from the keyboard — no mouse needed. This is critical when the laptop is connected to a projector across the room. Arrow keys adjust the duration in preset increments, and Space toggles start/pause. The timer state persists if you accidentally refresh the page.

How to use it

  1. 01

    Set the duration

    Type any time or use the up/down arrows to adjust. Default is 5 minutes.

  2. 02

    Go fullscreen and start

    Press F for fullscreen, then Space to begin the countdown.

  3. 03

    Reset for the next round

    Press R to reset to the same duration. The timer is ready for another run.

Frequently asked

The shortest path between you and the answer.

Is this tool free?

Yes. Every ScreenTools.co tool is free, with no account, no paywall, and no install.

Does it work on mobile?

Yes. Layouts adapt to phone and tablet screens. Mobile Safari restricts true fullscreen, but the page fills the viewport and you can add the page to your Home Screen for an app-like experience.

Does it work offline?

Once a tool's page has loaded once, the runtime is local. A few tools that fetch fonts or icons need the first hit online; after that, refresh works offline.

Does this collect my data?

No personal data leaves your browser. The site has lightweight, privacy-respecting analytics for aggregate counts (which tool was opened) and nothing else.

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