What date will it be a number of days from today?
Choose today as the starting date, select Add, enter the number of days and calculate. The result includes the full date and weekday.
Calendar math
Date calculator
Choose a starting date, amount and calendar unit to get a dependable resulting date.
Add or subtract dates
Result
Details
- Accuracy note
Days and weeks are exact 24-hour calendar steps. Month and year calculations clamp to the last valid day when the target month is shorter, such as January 31 plus one month becoming February 28 or 29.
How to add or subtract time from a date
- Choose a starting date.
- Select Add or Subtract and enter an amount.
- Choose days, weeks, months or years to get the resulting date and weekday.
Date-offset uses
- Find the date after a notice period, visa window or project interval.
- Calculate dates such as 30, 60 or 90 days from a starting date.
Common questions
What happens when adding one month to January 31?
Month and year calculations clamp to the final valid day of a shorter target month. January 31 plus one month therefore becomes February 28 or 29.
Are weeks treated as seven days?
Yes. A week is calculated as exactly seven calendar days. Months and years use calendar boundaries instead of a fixed number of days.