How many days until a date
Count the days remaining (or elapsed) between today and the date you choose.
Calculator inputs
Results
Enter your values and press “Calculate” to see the result.
In short
- What it calculates
- Count the days remaining (or elapsed) between today and the date you choose.
- Formula used
Days = |target date − today|- Example
- Today is 2026-08-21 and the target date is 2026-12-25
Days until a date
Enter a date and see how many days separate it from today, whether it lies ahead or has already passed.
It is the fast way to check deadlines, holidays or anniversaries.
How it works
Today's calendar date is taken and the difference in whole days is counted. The day of the week of the target date is also shown, which helps when planning.
Formula
Days = |target date − today|
Weeks = days ÷ 7
Approximate months = days ÷ 30.44
Worked example
Today is 2026-08-21 and the target date is 2026-12-25
126 days remaining
That is 18 weeks
It falls on a Friday
Explanation
Why a precise countdown matters
A tax deadline, a passport expiry, the end of a probation period or the window to appeal a fine all depend on an exact number of days. Rounding to 'about a month' is where the trouble starts: months run from 28 to 31 days, and that difference decides whether you make it.
Documents that expire sooner than you think
Many countries require a passport to be valid for at least six months beyond the date of entry. A passport expiring in five months no longer works for those destinations, even though it is technically still valid. Count the real days before booking a ticket.
Deadlines counted from notification
In administrative matters, the period usually starts not on the day of the event but the day after notification, and ends at a specific time on the final day. If the last day falls on a public holiday, it almost always moves to the next working day.
Dates that matter
The same count works for everyday things: how long until a holiday, an exam, a wedding or a delivery date. Seeing the exact number helps you plan better than an estimate in weeks.
Frequently asked questions
Does today count?
No. Only whole remaining days are counted, so a date tomorrow returns one day.
Does it work with distant dates?
Yes, both backwards and forwards, always respecting leap years.
Will my passport still be valid for my trip?
Many destinations require six months of validity beyond entry. Count the days from your travel date to expiry and confirm with the consulate.
Do administrative deadlines start today?
They usually start the day after notification, and if they fall due on a public holiday they move to the next working day. Check the applicable rule.
Need to calculate something else?
These tools are often used alongside this calculator.
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