How to use this calculator
- Name your event.
- Choose the target date and time (in your local time zone).
- Use Share to copy a link that opens this countdown for anyone.
Formula
The remaining time is the target moment minus the current time, recomputed every second and split into whole days, hours, minutes and seconds.
Remaining = target − now
days = ⌊s / 86,400⌋, hours = ⌊(s mod 86,400) / 3,600⌋, …
Frequently asked questions
Which time zone does the countdown use?
Your device's local time zone. Someone opening a shared link in another time zone sees the countdown to the same wall-clock time in their zone.
What happens when the date passes?
The timer switches to showing how long ago the event was.
Does the countdown keep running if I close the page?
The page doesn't need to stay open. Reopen it or the shared link at any time to see the current remaining time.