How Many Days Until…? (Countdown Calculator + Popular 2025 Dates) Updated 2025
Enter any date and get the exact number of days until (or days since) that date. Use quick buttons for popular 2025 dates like New Year’s Day, Independence Day, Halloween, Thanksgiving, and Christmas.
Takeaway: Decide if you want to include today—different planners prefer different methods.
Popular 2025 Dates (Quick Buttons)
Click a date to auto-fill the calculator above.
Helpful Links
- Check if a year is leap: Leap Year Explained
- Month lengths: Days in Each Month
- Convert to weeks/hours/minutes/seconds: Simple conversions
- Balance time off: Weekends in a Year
Takeaway: Use “Include both dates” when your event runs full days on both ends.
Frequently Asked Questions
How do I count inclusively vs. exclusively?
Inclusive counts both the start and end dates. Exclusive starts counting from the day after the start date. This page lets you pick either way.
Why can results be off by one day?
Time-of-day, time zones, and inclusive/exclusive choices can shift results. Our counters normalize to midnight local time to avoid DST issues.
Does this count business days?
No—this page counts calendar days. For workday planning, see How Many Working Days Are in a Year?