Add or subtract days from a date, or find the number of days between two dates.
Frequently Asked Questions
How do I add days to a date?
Enter your start date, choose Add, enter the number of days, and the calculator returns the resulting date, including the day of the week.
How do I find the number of days between two dates?
Enter both dates in the "Days Between Dates" tab. The calculator subtracts the earlier date from the later one and shows the total days and weeks.
Does this calculator account for leap years?
Yes, all date math uses real calendar dates, so leap years are handled automatically.