Add or Subtract Days from a Date
Add or subtract days from a date to find a new date.
Add or Subtract Days
Calculate a new date by adding or subtracting days from a start date. This is useful for deadlines, reminders, and date-based planning.
How to use the Add or Subtract Days tool
- Select the start date.
- Enter the number of days to add or subtract.
- Click Calculate to see the result.
Common use cases
- Finding deadlines from a start date.
- Calculating review or renewal dates.
- Planning time-off windows.
- Shifting schedules by a fixed offset.
Tips & notes
- Use negative values for subtraction.
- Use ISO dates for clarity in shared workflows.
- For business-day shifts, use a working-days calculator.
Related time tools
- Date Difference Calculator
- Days Between Two Dates
- Business Days Calculator
FAQ
Can I subtract days?
Yes. Use a negative number.
Does it handle leap years?
Yes. The calendar rules are applied automatically.
Can I add weeks instead?
Use a multiple of 7 days or the Date Range tools.