How to calculate number of days in a month or a year in Excel?
As we all know, there are leap years and common years where leap year has 366 days and common year has 365 days. To calculate the number of days in a month or a year based on a date as below screenshot shown, this article will help you.
Calculate number of days in a given month with formulas
If you have a list of date in a column, to calculate the days in a month, please apply the following formulas:
Enter any of the below formulas into a blank cell beside your date, and then drag the fill handle down to the cells that you want to calculate the days in the specific month, see screenshot:
=DAY(EOMONTH(A2,0))
Note: In the above formulas, A2 is the date cell that you want to get the number of days in a month based on.
Calculate number of days in a given year with formulas
To get the number of days in a year, please do as this:
Enter the following formula into a blank cell beside your date cell, then drag the fill handle down to the cells that you want to calculate the days in the specific year, see screenshot:
Note: If you just have year numbers in the column, the below formula can help you to calculate the days in the given years as following screenshot shown:
Calculate number of days in a given month or year with a useful feature
If you have Kutools for Excel, with its Calculate days in year / Calculate days in month features, you can get the the number of days in a specific month or year without remembering any formulas.
After installing Kutools for Excel, please do as follows:
1. Click to select a cell where you want to output the result, see screenshot:
2. And then click Kutools > Formula Helper > Formula Helper, see screenshot:
3. In the Formulas Helper dialog box, please do the following operations:
- Select Math from the Formula Type drop down list;
- In the Choose a formula list box, click to select Calculate days in year or Calculate days in month option as you need;
- Then, in the Arguments input section, select the cell containing the date that you want to get the days of month or year from the date .
Tips: In the Date textbox, you should change the default absolute cell reference to relative cell reference for dragging the formula correctly.
4. And then, click Ok button, the first result will be calculated, then select the first formula cell, and drag the fill handle down to the cells for applying this formula, and you will get the number of days in a year as below screenshot shown:
Selecting the Calculate days in month option to get the number of days in specific months, see screenshot:
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