＋UTILITIES
Date Add & Subtract Calculator
Add or subtract days, weeks, months and years from a date to find the resulting date.
Enter your values
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Privacy-friendly: your inputs are processed locally in your browser.
Formula
The calculator applies years and months using calendar-aware date arithmetic, then applies weeks and days as exact day shifts.
The calculator applies years and months using calendar-aware date arithmetic, then applies weeks and days as exact day shifts.
How it works
1
Choose the starting date.
2
Select Add or Subtract and enter the time amounts.
3
Review the resulting date and weekday.
Important notes
Month lengths vary. When a target month does not contain the original day, the calculator uses the last valid day of that month.