Days Between Dates Calculator
Calculate calendar days between two dates, with weeks, working days and weekend days.
Your date difference will appear here.
How it works
The calculator subtracts Gregorian calendar dates, including leap days. By default it counts the earlier date and excludes the later date. Reverse ranges return a positive difference, with a note explaining the order.
Example
September 26, 2026 to December 25, 2026, with the end date excluded.
90 days — 12 weeks and 6 days. Including both dates gives 91 days.
Common questions
Are the start and end dates included?
The earlier date is included and the later date is excluded. Select Include end date to count both.
Are public holidays counted as working days?
Yes, if they fall Monday through Friday. The working-day count excludes weekends only; it does not exclude public holidays or apply local work schedules.