See how much time is left until a date and time you choose, updated continuously.
Example
A target two days, 3 hours, 4 minutes and 5 seconds away appears as 2 days and 03:04:05, while something 36 hours away shows 1 day and 12:00:00.
Calculation method
The target is interpreted in the time zone set on your device, and the remaining time is calculated from real timestamps rather than by counting ticks, so a daylight saving change during the countdown does not add or remove an hour by mistake.
Important notes
This tool displays the time remaining and does not sound an alert at zero. For an audible signal use the Online Timer or the Alarm Clock, keeping the tab open. Accuracy depends on the device clock, so leave automatic time setting enabled.
Counting down to a moment
Choose a target date and time and the display shows the whole days remaining plus the rest as hours, minutes and seconds. Two days, 3 hours, 4 minutes and 5 seconds away appears as 2 days and 03:04:05; 36 hours away is 1 day and 12:00:00. The countdown updates continuously, which makes it useful for launches, exams, holidays, sales that end at midnight or the time left before a meeting. When the target passes, the clock stops at 00:00:00 and shows that it has been reached.
Your device’s time zone
The target is interpreted in the time zone set on your device, and the remaining time is calculated from real timestamps, so a daylight saving change during the countdown does not add or remove an hour by mistake. If you share a countdown with people in other countries, the same page will count to the local time on each person’s device, not to one worldwide moment. For an event scheduled in another city, convert its local time first with the Time Zone Converter.
Accuracy and background tabs
Because the remaining time is recomputed from the device clock each time the display updates, a background tab may refresh less often but shows the correct value again as soon as you look at it. The accuracy depends on the device clock; enable automatic time setting to keep it synchronised. This tool displays time remaining and does not sound an alert at zero; for an audible alert use the Online Timer or the Alarm Clock, keeping the tab open.
Worked examples| Input | Result |
|---|
2 days 3 h 4 min 5 s left | 2 d · 03:04:05 |
36 hours left | 1 d · 12:00:00 |
59 seconds left | 0 d · 00:00:59 |
target already passed | 00:00:00 · reached |
Frequently asked questions
What happens when the target passes?
The clock stops at 00:00:00 and shows that the moment has been reached, so the page never counts into negative time. Something 59 seconds away first shows 0 days and 00:00:59, then finishes on the same screen without you having to reload.
Will everyone see the same numbers?
Not necessarily. The countdown runs to the target time on each viewer’s own device, not to one worldwide instant, so people in other countries see a different remaining time. For an event scheduled in another city, convert its local time first with the Time Zone Converter.
Is it accurate in a background tab?
Yes. Because the remaining time is recomputed from the device clock each time the display refreshes, a hidden tab may update less often but shows the correct value as soon as you look at it. It is well suited to launches, exams, holidays and sales that end at midnight.