We can use the **EOMONTH** and **DAY **functions to get the **number of days in the month** when we already have a single date. The steps below will walk through the process.

*Figure 1: Result of using the DAY and EOMONTH functions*

**General Formula**

**=DAY(EOMONTH(date,0))**

**Formula**

**=DAY(EOMONTH(B5,0))**

**Setting up the Data**

- We will set up data by inputting our
**Dates**in**Column B** - Our result, which is the
**Number of days**in a month will be returned in**Column C**

* Figure 2: Setting up the Data*

**Calculate the number of days using EOMONTH and DAY**

- We will click on
**Cell C5** - We will insert the formula below into the cell

**=DAY(EOMONTH(B5,0))** `We will`

**press the enter key**

* Figure 3: How to get the days of the month*

- We will click on
**Cell C5**again - We will
**double click**on the fill handle tool which is the small plus sign you see at the bottom right of**Cell C5.**Select and drag down to copy the formula to other cells.

* Figure 4: Result of using the DAY and EOMONTH functions*

**Explanation**

**=DAY(EOMONTH(B4,0))**

Our **DAY** function is always equal to the number of days in the month. The **EOMONTH function** checks the date in **Cell B4 **and **returns** the date corresponding to the **last day of the month** we specified. Next, the **DAY function** works on the data derived by the EOMONTH and return with the total number of days for that month.

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