Add or subtract from a date
Add or subtract days, weeks, months, or years from a base date.
As-of date
Year
Month
Day
Add or subtract
Amount
Results
As-of date
30 August 2026
Operation
+30days
Resulting date
29 September 2026
Months and years
Month and year offsets follow the calendar. A non-existent day (e.g. 31 January + 1 month) may land on the last day of the month.
Frequently asked questions
Can I count business days?
Not yet — calendar days only. Excluding holidays is a possible later addition.