Date Diff Calc
Calculate time between two dates.
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Works well with
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How to use
How to use Date Diff Calc
Measure days, weeks, or months between two dates for deadlines and planning.
- 01
Select a start date and end date.
- 02
View the span in days and larger units.
- 03
Use the result for project timelines or age gaps.
Common questions
Inclusive or exclusive end date?
The diff counts whole days between dates. Check output labels for whether the end day is included.
Business days only?
This version counts calendar days. Skip weekends manually for business-day estimates.
Leap years?
Yes — February and leap days are handled in the calendar math.
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