Date calculator: add or subtract
The date a number of days, weeks, months or working days from any date.
Result
Loading today's date…
- Result
- —
- ISO date
- —
- Calendar days between
- —
What this calculation assumes
- Years and months are applied before weeks and days. Adding one month to January 31 gives the last day of February.
- Working days skip Saturdays and Sundays. Public holidays are not skipped. Starting on a weekend, the first working day counted is the following Monday.
Adding months and years
Years and months move the calendar month and keep the day of the month. If that day does not exist, the result is the last day of the month: January 31 plus one month is February 28, or February 29 in a leap year. Weeks and days are added after that, one day at a time.
Working days
Switch Count to Working days to move forward or back by Monday-to-Friday days only, for deadlines, delivery times and notice periods. Public holidays are not skipped.
Questions people ask
What date is 90 days from today?
Leave the start date as today, set Days to 90 and the result appears at once.
Is adding 1 month the same as adding 30 days?
No. One month moves to the same day next month, which is 28 to 31 days away.