Date & time tool
Date Difference Calculator
Calculate the number of days between two dates and see the elapsed calendar period.
Result
Your result will appear here.
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About the Date Difference Calculator
Find the difference between two calendar dates in days and approximate weeks, with an optional inclusive count.
How to use this tool
Choose a start date and end date, decide whether to count both endpoints, and click Calculate difference.
Example
The number of days between Monday and Tuesday is one day; inclusive counting counts both dates.
Tips for better results
This tool measures calendar-day differences and does not calculate business days or holidays.
Frequently asked questions
Can the end date be earlier?
Yes, the tool reports the absolute difference.
Does it count weekends?
Yes, all calendar days count.