Excel Formula: Count Days of Month

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.

Generic formula:

Syntaxt and Arguments

Return Value

The formula returns to a numeric value.

Error

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.

Explanation

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.

=DAY(EOMONTH(B3,0))
=DAY(“2/29/2020”)
=29

Remark

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:

=DAY(EOMONTH(DATEVALUE("01-"&B9&"-"&YEAR(TODAY())),0))

Press Enter key to get the result.

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

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

=DAY(EOMONTH(DATEVALUE("01-"&B9&"-"&YEAR(TODAY())),0))
=DAY(EOMONTH(DATEVALUE("01-"&B9&"-"&2020),0))
=DAY(EOMOTH(“1/1/2020”,0))
=DAY("1/31/2020")
=31

Relative Formulas

• Check if a date is workday
  This tutorial provides a formula to to check a date if is a workday.
• Check two dates are in the same year month
  To check if two dates in the same year month, you can use the formula in this tutorial.
• Create date range from two dates
  This tutorial provides a formula with TEXT function to create a date range based on two dates in text format in Excel.
• Create weekly date range
  In this tutorial, it provides a formula to quickly get the weekly date range in Excel.

Relative Functions

• Excel WEEKNUM Function
  Returns the week number of the given date in a year
• Excel WORKDAY Function
  Adds workdays to the given start date and returns a workday
• Excel MONTH Function
  The MONTH is used to get the month as integer number (1 to 12) from date
• Excel DAY Function
  DAY function gets the day as a number (1 to 31) from a date
• Excel NOW Function
  Get the current time and date