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tools / ● Numbers / countdown-timer

Countdown Timer.

Count down to any future date and time. See the exact days, hours, minutes, and seconds remaining.

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Pick any future date and time and watch the live countdown tick down to zero in days, hours, minutes, and seconds. The display updates every second. Useful for countdowns to events, deadlines, product launches, travel dates, or any milestone you're looking forward to.

How to use

Use the date and time picker to set your target. The countdown starts immediately and updates every second. When the target time is reached, the display shows a 'Time's up!' message.

Examples

New Year 2027 Days, hours, minutes, seconds until Jan 1 2027
Project deadline Exact time remaining shown live, updating per second
Event in 30 days 29 days, 23 hrs, 59 min, 59 sec → 0 days, 0:00:00

FAQ

Does the countdown keep running if I switch tabs?

Yes. The countdown is based on wall-clock time (Date.now()), not an interval counter, so it stays accurate even when the tab is in the background.

Can I set a countdown in the past?

The date picker limits selection to future dates only. If the target time passes while the countdown is active, a 'Time's up!' message is shown.

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Privacy and data handling

This tool runs entirely in your browser. Nothing you type or paste is sent to any server — all processing happens locally on your device.

You can also pass a date to this tool using the date URL parameter (e.g., ?date=YYYY-MM-DD). Use time to specify a time (e.g. ?date=YYYY-MM-DD&time=HH:MM). If you choose to save your date, it is stored in a local cookie and never leaves your device.