Date Calculator
Add/subtract days from a date, or calculate the difference between two dates.
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What is this tool?
Date calculator adds or subtracts days, weeks, months, or years from a given date. It can also calculate the difference between two dates. Useful for project planning, deadline calculation, due dates, counting down events, and any scenario requiring date arithmetic.
How to use
- 1
Select operation
Choose to add/subtract dates or find the difference between two dates.
- 2
Enter date and values
Input the start date and the amount to add or subtract.
- 3
View result
See the calculated date or date difference.
Frequently Asked Questions
How do I add months to a date?
Add the month value to the current month, handling overflow. For example, adding 3 months to January 31 gives April 30 (since April has only 30 days). Most date calculators adjust to the last valid day of the target month.
Can I calculate business days?
This tool counts calendar days.
Can I calculate business days (excluding weekends)?
This date calculator counts all calendar days. To calculate business days, you would need to manually exclude Saturdays and Sundays, or use a dedicated business days calculator that accounts for holidays.