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How to calculate days between dates
Choose both dates and select whether the start date should be included in the count.
Set the start date
Enter the first calendar date for the period you want to measure.
Set the end date and method
Enter the second date, then choose elapsed days to exclude the start or inclusive days to count both endpoints.
Read the breakdown
Use the headline count for the interval and the supporting cards for weeks, calendar difference, and each selected date.
Frequently Asked Questions
What are elapsed days?
Elapsed days exclude the start date and count the date boundaries crossed.
What are inclusive days?
Inclusive days count both the start and end date.
What if the end date is earlier?
The tool shows the positive interval magnitude and clearly flags the reversed range.
Does daylight saving affect the answer?
No. The calculation uses calendar dates rather than midnight timestamps.
Does a same-day range have zero elapsed days?
Yes. It has zero elapsed days and one inclusive day.
Why show weeks and days?
It provides a quick readable breakdown of the total counted days.
Can I calculate dates far in the future?
Yes, provided both dates can be entered by your browser date control.