Add or subtract dates

Find a date by adding or subtracting years, months, weeks, and days.

Your inputs

Choose your dates and the calculation convention. Results update as you edit.

Calculations run in your browser. Inputs are not saved or sent to analytics.

Complete the inputs to see your result.

Resulting date = Start date + Years to add or subtract → Months to add or subtract → (7 × Weeks to add or subtract + Days to add or subtract)

Apply years, then months, then weeks/days. If the destination month lacks the original day, use its last day.