Find the exact number of days between two dates, or add/subtract any number of days, weeks, months, or years from a date.
Enter a start date and end date in the "Duration Between Dates" tab. The calculator instantly shows the total days, as well as the difference expressed in years, months, weeks, and days, business days, and weekend days.
Switch to the "Add / Subtract Days" tab. Enter your start date, choose whether to add or subtract, then enter the number of days, weeks, months, or years. The result date is shown instantly.
Business days are counted as Monday through Friday. This calculator excludes Saturdays and Sundays but does not account for public holidays, which vary by country and region.
The breakdown gives you the most natural reading of the duration — like "2 years, 3 months, 12 days." It calculates the full years first, then full remaining months, then remaining days, similar to how age is typically expressed.
Yes. Click "Today" next to Start Date to set today as the start, then enter your future date as the End Date. The result shows exactly how many days remain.