Frequently Asked Questions
How does adding or subtracting days work?
Select a starting date and enter the number of days to add or subtract. The calculator accounts for leap years and varying month lengths to give you the exact result date.
Can I subtract days to find a past date?
Yes, you can either use the subtract mode or enter a negative number to calculate a date in the past from your starting date.
Does this calculator skip weekends and holidays?
This calculator counts calendar days. If you need to calculate business days excluding weekends and holidays, please use the Business Days Calculator.
2026 calendar data