How to Calculate the Number of Days in a Month Using Excel Formula

Learn how to calculate the total days in any month with Excel using the simple =DAY(EOMONTH(date,0)) formula.

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To calculate the number of days in a month in Excel for any given date, use the formula: `=DAY(EOMONTH(date,0))`. Replace `date` with your date cell. This formula finds the last day of the month for the specified date, then extracts the day, giving you the total number of days in that month.

FAQs & Answers

  1. How does the EOMONTH function work in Excel? The EOMONTH function returns the last day of the month, a specified number of months before or after a given date.
  2. Can I calculate days in a month without EOMONTH in Excel? Yes, but EOMONTH is the most efficient. Alternatively, you could use DATE to get the first day of next month and subtract the first day of current month.
  3. What does the DAY function do in Excel? The DAY function returns the day component (1 to 31) of a given date in Excel.