Calendar Countdown Calculator

The calculator takes your start date and end date, then computes the difference in total days. It also breaks that span down into years, months, weeks, and leftover days, and separately counts how many of those days fall on weekdays versus weekends. Checking 'Include end date' adds one extra day to all counts.

By default, the calculator counts up to but not including the end date — so from Jan 1 to Jan 5 gives 4 days. Checking 'Include end date' adds 1 day to the total, making that same range 5 days. This is useful when the last day is fully counted, such as a project deadline or an event's final day.

The calculator iterates through every date in the selected range and checks whether each falls on Monday through Friday (weekday) or Saturday/Sunday (weekend day). The counts always add up to the total number of days in the range.

Absolutely. Set today's date as the start date and your birthday or event date as the end date. The total days result gives you your countdown number, and the weekday breakdown helps you plan around working days.

Calendar days include every day — weekdays and weekends alike. Working days (also called business days) count only Monday through Friday, excluding weekends. This calculator shows you both so you can use whichever is relevant to your situation.

Yes. The underlying date arithmetic uses the actual calendar, so February 29 in leap years is handled correctly. A range spanning a leap year will naturally include the extra day in the total count.

After dividing the total days into complete weeks, there are usually a few days left over that don't fill a full seven-day week. The 'Remaining Days' field shows that leftover amount so the breakdown of weeks + remaining days adds up precisely to the total.

The calculator will return zero for all results if the end date is earlier than the start date. Make sure your end date is set to a date after your start date to get a valid countdown.