How Many Days Between Two Dates?
Enter a start date and an end date to see the exact difference in multiple units: total calendar days, weeks, months, business days (weekdays only), hours, and minutes. Useful for project timelines, contract durations, event planning, and more.
Understanding Date Differences
Calculating the gap between two dates seems simple, but edge cases abound. Leap years add an extra day every four years (with century exceptions). Months range from 28 to 31 days. Business-day counts exclude weekends but don't account for regional holidays — keep that in mind for project planning.
Common Use Cases
- Project management: Determine how many working days remain until a deadline.
- Contract durations: Calculate the exact length of a lease, subscription, or agreement.
- Event planning: Find out how many days until a wedding, graduation, or trip.
- Legal & financial: Compute interest periods, notice periods, or statute-of-limitations windows.
Frequently Asked Questions
Does the business-days count exclude holidays?
Business days exclude Saturdays and Sundays only. Public holidays vary by country and are not excluded. For precise business-day calculations, subtract your region's holidays manually.
Can I calculate the difference in the opposite direction?
The end date must be after the start date. To reverse the calculation, simply swap the two dates.
How are months calculated?
Months are counted as whole calendar months. For example, January 15 to March 15 is exactly 2 months, regardless of whether February has 28 or 29 days.