Countdown Calculator
Find out exactly how many days, hours, and minutes remain until any future date. Perfect for events, deadlines, and birthdays.
Days Remaining
—
Weeks Remaining —
Hours Remaining —
Status —
How to Use This Calculator
- Enter the target year, month, and day.
- Click Calculate to see days, weeks, and hours remaining.
- A negative number means the date has already passed.
Formula
Remaining = Target Date − Today (in milliseconds ÷ 86,400,000)
Weeks = floor(Days ÷ 7)
Example
Example: Today is March 18, 2026. Target: December 25, 2026 → 281 days remaining (40 weeks, 6,744 hours).
Frequently Asked Questions
- Enter the target year, month, and day. The calculator subtracts today's date and shows days, weeks, and hours remaining.
- If the target date is in the past, the calculator shows a negative countdown, telling you how long ago it was.
- The hour count is based on full 24-hour days from the current moment — it does not factor in a specific time on the target day.
- Yes — enter the birth date of the upcoming birthday and the calculator shows exactly how many days remain.
- The result is calculated when you click Calculate. Refresh the page or click again to get the most current countdown.