Countdown Timer - Count Down to Any Date & Time Online
Live days, hours, minutes, and seconds countdown to any future date and time
Other
Tool
Select a future date and time to start the countdown.
How to Use
1Click the date/time input field and select your target date and time
2The countdown starts automatically and ticks every second
3Each unit (days, hours, minutes, seconds) is shown in its own box
4When the target time is reached, the display changes to "Countdown complete!"
5To reset, simply pick a new date and time
Frequently Asked Questions
The timer updates every second using JavaScript's setInterval and calculates the remaining time based on your device's local clock. Accuracy depends on your system time; for critical deadlines always cross-check with an authoritative time source.
Yes. The countdown keeps running in the background even when the tab is not visible, because it recalculates the remaining time from the target date on each tick rather than decrementing a stored value.
The datetime-local input uses your browser's local timezone. If you need to count down to an event in a specific timezone, convert the target time to your local timezone before entering it.
Yes — just change the target date and time field and the countdown will restart immediately. You can bookmark the page and update the target whenever you need a new countdown.