Date Difference Calculator: Count Days Between Dates
A date difference calculator can help plan a project, count days to an event or compare two calendar dates. Select both dates and check whether the calculation includes the start date.
Find the difference between dates
- Choose the start date in the first field.
- Choose the end date in the second field.
- Select Calculate to view the elapsed difference.
- Reverse the dates if you want to check a different interval.
- For deadlines, confirm inclusive-day rules, holidays and time zones with the responsible organization.
Elapsed days versus inclusive days
An elapsed difference counts the interval between dates. A process that counts both its first and last day may use an inclusive count and produce a different total.
Calendar periods and deadlines
Months have different lengths, and official deadlines can exclude weekends or public holidays. This general calculator does not apply jurisdiction-specific deadline rules.
Frequently asked questions
Does the result include both dates?
The result is an elapsed difference unless the tool explicitly says it uses an inclusive count. Check the displayed method for deadline calculations.
Can I use this to calculate a legal filing deadline?
Use the relevant court or agency rules. This general date tool does not account for holidays, filing cutoffs or local rules.
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