Add or subtract days from a date calculator

Add or subtract days, months and years from a date to find the resulting date.

Resulting date

July 20, 2026

Day of weekMonday

Months and years respect the calendar (e.g. Jan 31 + 1 month lands at end of February).

How the calculation works

We apply years, then months, then days to the start date, respecting each month's length and leap years.

What day is 90 days from now?

Leave the start date as today, choose "Add" and enter 90 in days.

Count how many days, weeks and months are between two dates.

Find your exact age in years, months and days from your date of birth.

Updated on June 18, 2026 · by Rafael Rossi · Methodology & sources