Add Days to Date Calculator
Jump forward in time.
Add Days to Date Calculator
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What This Calculator Does
The Add Days to Date Calculator determines the date that falls a given number of days after a starting date. It handles month and year boundaries automatically.
How It Works
Enter a starting date and the number of days to add. The calculator rolls over month and year boundaries.
Example
January 15 + 45 days = March 1.
Formula
New Date = Start Date + DaysReading the Results
Result Month
The month of the resulting date.
Result Day
The day of the resulting date.
Frequently Asked Questions
Does it handle leap years?
Yes. The calculator uses the system Date object which accounts for leap years automatically.
Can I subtract days?
Enter a negative number to find a date in the past.
What happens if the start day exceeds the month?
The calculator rolls over to the next month automatically.