Days Until Calculator

Count down the days, weeks and months until any date, such as Christmas, a birthday, a holiday or a deadline.

The event or deadline you are counting down to.
Defaults to today.
Days until the date
78 days
In weeks
11 weeks, 1 day to go
In months
2 months, 17 days to go
In hours
1,872 h

Estimate generated with SortedSums: https://sortedsums.com/days-until-calculator/. For informational purposes only; verify before relying on it.

How it’s calculated

Both dates are placed on the Gregorian calendar and the number of midnights between them is counted. The target day itself is not counted, so the day before an event shows "1 day".

days = target date − start date weeks = days ÷ 7 (remainder in days) months = whole calendar months, then leftover days

Example: from 5 October 2026 to Christmas (25 December 2026): 26 days left in October + 30 in November + 25 in December = 81 days, which is 11 weeks and 4 days, or 2 months (to 5 December) and 20 days.

If the target is in the past, the calculator shows how long ago it was.

Frequently asked questions

Is today counted?

No. The count is the number of days you must wait: on 24 December there is 1 day until Christmas.

How are months counted?

Whole calendar months from the start date, then the remaining days. If the start day does not exist in a month (e.g. the 31st), the last day of that month is used.

Does it use my time zone?

The "today" default uses your device’s local date. The count itself is in whole calendar days.

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Sources

Formulas are taken from the free public references above. Results are provided “as is” for informational and educational purposes only. See our disclaimer.

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