Date Calculation
Add/Subtract Days Calculator
Add or subtract days, weeks, and months from any date. Instantly calculate the resulting date.
Date inputs
Enter base date and duration
Real-time calculation
Select the starting date.
Number of days
Number of weeks
Number of months
How it works
Add or Subtract Dates Easily
This calculator helps you find dates by adding or subtracting time periods from any starting date.
- Add Days: Add specific number of days to a date.
- Add Weeks: Add weeks (automatically converted to days).
- Add Months: Add months while respecting calendar months.
- Subtract: Use subtract mode for negative calculations.
Common uses
Due Dates: Calculate project deadlines by adding days or weeks.
Warranties: Find warranty expiration dates.
Appointments: Schedule future appointments by adding months.
Historical Dates: Find dates before a given date by subtracting.