Date & Time Calculator
Countdown Calculator
Calculate how many days are left until a future date.
⚠️ Please select a target date.
Countdown
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Calculator guide
How this calculator works
How to use this calculator
Select a target date, then click Calculate Countdown. The calculator shows how many days are left until that date, or how many days have passed if the date is in the past.
Formula used
The calculator compares today’s date with the selected target date and divides the difference by one calendar day.
Example calculation
If today is January 1, 2026 and the target date is January 31, 2026, the countdown is 30 days.
What the result means
The result shows the number of full calendar days between today and the target date.
Frequently asked questions
Does this update live?
It calculates based on the date when you click the button. Refresh or recalculate on a new day.
Can I select a past date?
Yes. The calculator will show how many days ago the date occurred.
Does this include hours and minutes?
No. This version focuses on calendar days.