Days Until Calculator
A live countdown to any date — days, hours, minutes, and seconds.
Quick answer
To find how many days are left until a date, subtract today from that date. Pick a date below (or a preset) and the calculator counts down live, including the hours, minutes, and seconds of the current day. The link updates so you can share a specific countdown.
How the countdown is calculated
The countdown measures the time from right now to midnight at the start of your target date. Whole days are the largest unit; the remaining hours, minutes, and seconds count down the partial day.
Recurring events (like Christmas) use the next occurrence: if the date has already passed this year, the countdown rolls to next year automatically.
For longer spans in other units, see hours in a year and the time unit converter.
Frequently asked questions
How do I calculate how many days until a date?
Subtract today's date from the target date. The result is the number of whole days remaining; the hours, minutes, and seconds count down the partial day. This tool does it live.
How many days until Christmas?
It depends on today's date. Use the Christmas preset above and the calculator counts down to December 25 of the current year (or next year if it has already passed).
Can I share a countdown to a specific date?
Yes. Pick a date and the page link updates with that date (for example, ?date=2026-12-25), so you can bookmark or share that exact countdown.
Does the countdown update in real time?
Yes. The hours, minutes, and seconds tick down live in your browser while the page is open.