calculator
Date Difference Calculator
Use the date difference calculator to count deadlines, trip lengths, and date ranges.
Result
Add values and run the tool to see a clear result here.
How it works
Exclusive mode counts the boundary difference. Inclusive mode adds one day to include both endpoints.
Examples
Exclusive range
Input: Jan 1 to Jan 2
Output: 1 day
Inclusive range
Input: Jan 1 to Jan 2
Output: 2 days
FAQ
Can the end date be before the start date?
No. The tool returns a validation error.
What does exclusive mean?
It counts the difference between date boundaries.
What does inclusive mean?
It includes both the start date and end date.