Countdown Timer

Live updates each second; shows time remaining or elapsed since the target.

Track time until an event, deadline, or launch. Pick a target datetime and watch the countdown update in real time.

Target date and time
Countdown

Choose a target date and time.

How it works

Each second the page compares the target instant to the current device time.

Past targets show elapsed time with the same day/hour/minute/second breakdown.

Accuracy

Based on your system clock, not a network time service.

Background tabs

Browsers may throttle timers when the tab is hidden; the display catches up when visible.

Common questions

Time zone?
The picker uses your browser’s local time zone.
After the target passes?
The label switches to elapsed time since the target.
Share a preset?
The target is stored in the URL query string for sharing.
Privacy?
Nothing leaves this page.