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Excel Formula: Count Days of Month

Author: Sun Last Modified: 2021-01-06

doc convert date to julia 1

In this tutorial, it provides formulas to count the total days of a specific month or the current month.

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

Generic formula:


Syntaxt and Arguments

Date: the date that you want to count days of month. The date argument can be a number or date (since the date is stored as number in Excel).

Return Value

The formula returns to a numeric value.


If the date argument is a text value, the formula returns the #VALUE! error.

How this formula works

To count the total days of the specific month in each cell of B3:B6, please use below formula in cell C3:


Press Enter key and then drag autofill handle down to cell C6.
doc convert date to julia 1
doc convert date to julia 1


EMONTH function: gets the last day of the month in future or past. EOMONTH(B3,0) gets the last day of month in cell B3, 2/29/2020.

DAY function: gets the days as number from a date.



1) If you want to automatic return the total days of the current month when the date changes, you can change the generic formula to this:


TODAY function is used to get the current date of today.

2) If you want to get the days from a month name, you can change the generic formula to this:


Example: supposing to get the days from the month name in cell B9, please use the formula as this:


Press Enter key to get the result.
doc convert date to julia 1

YEAR function: returns the year based on the given date.

DATEVALUE function: converts a date stored as text format to a valid date.


Relative Formulas

Relative Functions

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