Countdown Timer to Any Date
Pick a date and, if you like, a time and an event name to see the days, hours, minutes and seconds left, counting down live. Copy the share link and anyone who opens it counts down to the same moment, with the date shown in their own time zone. When the moment arrives the page says so, and afterwards it shows how long ago it was.
Updated Runs in your browser: nothing you enter is uploadedHow this tool works
Countdown to your event
Pick a date below to start.
A shared countdown shows each viewer their own time zone.
Share this countdown
The link holds the exact moment (in UTC) and the name, nothing else. Whoever opens it sees the time left and the date in their own time zone.
How to make a countdown to a date
- Pick the date. Choose the day of your event. Without a time, the countdown runs to midnight at the start of that day.
- Add a time and a name. Optionally set the time (in your own time zone) and a name of up to 80 characters, then press Start countdown.
- Share it. Press Copy link and send it. The link carries the exact moment, so a friend in another country sees the same time left and the date in their local time.
- Show it big. Full screen (or F) shows just the countdown, for a screen at a party, a classroom or a launch.
Frequently asked questions
- Can I share a countdown?
- Yes. After you press Start countdown, the page address becomes the share link; Copy link copies it. It contains only the moment (as a UTC time, such as to=2026-12-31T23:00:00Z) and the event name, so nothing is stored on a server and the link keeps working as long as the page exists.
- Which time zone does the countdown use?
- You enter the date and time in your own time zone, and the link stores that moment in UTC. Everyone who opens it counts down to the same instant: someone in New York and someone in Tokyo see the same days, hours and minutes left, and each sees the date and time converted to their own zone.
- What happens when the countdown reaches zero?
- The numbers stop at zero, the page says it’s time (screen readers hear it too) and the tab title changes. After that it shows how long ago the event was. There is no alarm sound here; for a countdown that rings, use the online timer.
- Does it account for daylight saving time?
- Yes. The countdown is the real time between now and the moment, so a clock change in between is already counted. That also means that across a change, “days” in the countdown are 24-hour days: a countdown to midnight can read 2 days and 23 hours rather than 3 days.
- Is my countdown saved?
- Only in the link. The page keeps no record of your event; bookmark or share the address to come back to it. Without a link the page counts down to next New Year.
How it works
The target is stored as one absolute instant (milliseconds since 1970 in UTC). The time left is that instant minus the current time on your device, split into 24-hour days, hours, minutes and seconds, with seconds rounded up so zero appears exactly at the moment. The numbers are refreshed when a second changes, and immediately when you come back to the tab. The date you type is read in your browser’s time zone, and dates are shown in the viewer’s zone with the Intl date formatter. Accuracy depends on your device clock, which phones and computers keep in sync automatically. To add or subtract days and hours from a date, a date and time calculator is the better tool.
Sources
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