Time Until Calculator
Find out exactly how many days, hours, minutes, and seconds until any future date or event.
Frequently Asked Questions
About this calculator
Time Until counts down, to the second, to a future date and time. Give the event a name, choose the date and time, and the page shows the days, hours, minutes and seconds remaining and keeps ticking.
Use it for flights, exams, launches, weddings and match days, or to see exactly how long you have to finish something. The time zone is your device's, so make sure your clock is right.
How to use it
- Enter an Event Name, if you like.
- Choose the Target Date and Time.
- Press Calculate Time Until.
- Watch the countdown in days, hours, minutes and seconds.
Calculation
Remaining = Target − Now. Days = floor(Remaining ÷ 86,400); hours, minutes and seconds are the remainders. If the target is in the past, the tool says the event has already happened.
Worked example
A flight at 06:00 on 25 December 2026, counted from 8 November 2026 at noon
| Time remaining | 46 days, 18 hours |
| In hours | 1,122 |
The countdown is live, so the numbers on your screen will be lower than any example here.
Tips and common mistakes
- Set the time as well as the date. A 6 am flight is a different countdown from a 6 pm one.
- Time zones matter. A target in another city needs conversion first.
- Leave the tab open to watch the countdown, or press the button again to refresh.
- For recurring events, create a new countdown each time.
- Use Days Until if you only need whole days.
Frequently asked questions
How do I count down to a date?
Enter the date and time of the event and press Calculate.
Is the countdown to the second?
Yes.
Which time zone does it use?
Your device's local time zone.
What if the date has passed?
The tool tells you the event has already happened.
Can I count down to a recurring event?
Enter the next occurrence.
Is anything stored?
No.