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Excel Formula: Count Days, Week, Month or Year Between Two Dates

Author: Sun Last Modified: 2020-11-26

doc convert date to julia 1

In this tutorial, it provides the formulas to count the days, weeks, months, or years between two given dates.

If you want to follow along with this tutorial, please download the example spreadsheet.
doc convert date to julia 1

Generic formula:

Count days


Count weeks


Count months


Count years


Syntaxt and Arguments

Start_date, end_date: The two dates that you want to count the difference between. If the start_date is larger than end_date, the formula will return an error value #NUM!.


The DATEDIF function only works in Microsoft 365, Excel 2019, Excel 2016, Excel 2013, Excel 2010, and Excel 2007 versions.

How this formula works

Take an example, to count days between the dates in cells B3:C3, please use below formula:


Press Enter key.
doc convert date to julia 1

Then drag auto fill handle down to the cells to count the days between other date ranges.
doc convert date to julia 1

Following above to count weeks, months, or years:
doc convert date to julia 1


When counting months between two dates by using the formula DATEDIF(start_date,end_date,”d”)/7, it returns a value in date format, you need to format the result as general or number as below screenshot shown.
doc convert date to julia 1
doc convert date to julia 1


DATEDIF function: returns the years, months or days between two dates.

Relative Formulas

Relative Functions

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