Countdown Calculator
A live countdown to any date and time, ticking down to the second.
Counting down to…
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days
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Pick a date below, or tap one of the presets.
What are you counting down to?
Quick picks
This counts down to a future date, giving days, hours and minutes remaining.
It also explains why two countdowns to the same event can disagree by a day.
How countdowns are counted
A countdown is the gap between now and a target date. The arithmetic is simple; the disagreements come from two things nobody states explicitly.
The first is inclusive counting. Does "5 days until Friday" include today, or Friday, or both? Counting from Monday to Friday gives 4 days apart and 5 days inclusive. Two correct countdowns can differ by one for exactly this reason.
The second is time zones. A countdown to midnight on New Year's Eve reaches zero at different moments around the world. If a countdown is anchored to a specific place, it will not match your local clock.
Both are correct answers to different questions. Deadlines and contracts should say which they mean, and often do not.
What to enter
- Target date
- The date being counted down to. Adding a time makes the result more precise.
- Target time
- Optional. Without it, midnight at the start of the target date is the usual assumption.
- Time zone
- For events tied to a location. A launch or a broadcast happens at one instant, which is different local times.
Things countdowns get wrong
- Inclusive vs exclusive
- Whether today and the target day count. A one-day difference, and the most common cause of disagreement.
- Time zones
- Midnight arrives at different instants. A countdown must be anchored somewhere.
- Daylight saving
- A range spanning a transition is an hour shorter or longer than the day count implies.
- Leap years
- Any range spanning 29 February gains a day. 2026 is not a leap year; 2028 is.
- Business days
- A very different count from calendar days, and it excludes holidays that vary by country.
What this assumes
Without a specified time, the count runs to midnight at the start of the target date.
Counts are in your local time zone unless a specific one is set.
How to calculate a countdown to a date
Subtract, then decide what the endpoints mean.
- exclusive
- The gap between the two dates
- inclusive
- Counting both the start and the target day
Fix the target precisely. A date, and a time if it matters. Midnight at the start of a day and midnight at its end are 24 hours apart.
Subtract from now. That gives the exclusive count: the gap between the two points.
Add one if you want it inclusive. "Days including today" is one more than "days from today". Say which you mean.
Check the time zone for anchored events. A launch, a broadcast or a ticket release happens at one instant worldwide, at different local clock times.
See a worked example: counting to Christmas
- From
- 1 January 2026
- To
- 25 December 2026
Exclusive: 358 days.
Inclusive of both endpoints: 359.
2026 is not a leap year, so there is no extra day. A count spanning 29 February 2028 would gain one.
As business days it is roughly 256, before subtracting whatever public holidays apply where you are.
358 days, or 359 counted inclusively
Frequently asked questions
Usually inclusive versus exclusive counting. Monday to Friday is 4 days apart or 5 days inclusive of both endpoints.
The other cause is the target time. A countdown to midnight at the start of a day and one to midnight at its end differ by a full day.
An event happens at a single instant, which is a different clock time everywhere. New Year arrives in Sydney many hours before it arrives in New York.
A countdown to a fixed local midnight will therefore not match one anchored to a specific place. For product launches and broadcasts, always check which zone is being used.
For anything spanning a transition, yes. The spring-forward day is 23 hours long and the autumn day is 25.
It does not change the number of calendar days, but a countdown shown in hours and minutes will be an hour out if it ignores the transition.
Count weekdays and exclude Saturdays and Sundays. A full year has about 260 weekdays before holidays.
Public holidays have to be subtracted separately, because they differ by country and often by state. Most tools cannot assume them for you.
It depends on your starting point and whether you count today. From 1 January 2026 it is 358 days exclusive, or 359 inclusive.
Christmas is always 25 December, so the count from any given date is fixed once you settle the inclusive question.
A year with 29 February, occurring when the year is divisible by 4, except centuries, unless those are divisible by 400.
It matters for any count spanning that date. 2024 and 2028 are leap years; 2026 is not, and 2100 will not be despite being divisible by 4.
Problems people actually run into
Not saying whether today counts
"Five days until the deadline" is ambiguous, and the ambiguity is a full day. It matters for filings, notice periods and anything with a legal consequence.
State the actual date rather than a count. "Due on Friday 12th" cannot be misread; "in five days" can.
Ignoring the time zone on an anchored event
A ticket release at "10am" is 10am somewhere. Counting down to 10am your time can put you hours late.
For anything scheduled in one place and watched from another, convert to your own time zone before setting a countdown or an alarm.
Results are estimates for general information only and are not professional financial, medical, or legal advice. Read our full disclaimer.
Last updated: September 4, 2026