Find the date 30 days later
Choose Add, enter 30, and select the starting date.
Days From Date Calculator
Add or subtract calendar days from today or any starting date.
Days from date examples
Find the date 90 days earlier
Choose Subtract, enter 90, and select the reference date.
Use inclusive date counting
Turn on Count starting date as day 1 when the first date belongs in the count.
How adding and subtracting days works
Calendar-day calculations count every date, including weekends and public holidays. Use the Business Days Calculator when only working days should count.
By default, the starting date is day zero. Inclusive counting makes it day one, so a positive amount reaches a date one day sooner.
Frequently asked questions
- Does the calculator include the starting date?
- Not by default. Turn on Count starting date as day 1 to use inclusive counting.
- Are weekends and holidays included?
- Yes. This calculator uses calendar days, so every day is included.
- Can I subtract days from a date?
- Yes. Select Subtract and enter the number of calendar days.
- What happens when I enter zero days?
- The result is the starting date in both standard and inclusive modes.
- Does Calctiva store the dates I enter?
- No. The calculation runs in your browser, and the dates you enter are not sent to Calctiva or included in analytics.