**Calculate Age In Excel**

We use the

Calculate Age in Excelfeature to find a person’s age with the help of their date of Birth. We can also use theTODAYandDATEDIFfunctions. Excel does not have a pre-defined formula for the same.Therefore, we can use the followingBasic Formulato Calculate Age in Excel,=(Today’s Date – Date of Birth) / 365

##### Table of contents

###### Key Takeaways

- The basic formula to
**Calculate Age in Excel**is**(**So we need the Date of Birth and Today’s date.*Today’s Date – Date of Birth) / 365.* - We can use a few other functions such as the
**DATEDIF()**,**YEARFRAC()**, and**TODAY**() to**Calculate Age in Excel.** - The two dates compared to
**Calculate Age in Excel**must be in the same format. Therefore, if we get the results or output in text format, general, or any other format, convert them to the date or number option using the “**Format Cells**” window of Excel.

**Top 3 Methods To Calculate Age In Excel**

We will see the top three ways to **Calculate Age In Excel, **namely,

**Basic Excel Formula for Age in Years.****Calculate Age using the YEARFRAC function.****Calculate Age using the DATEDIF function.**

**#1 – Basic Excel Formula for Age in Years**

We will use the **Basic Formula to Calculate Age in Excel **to find the age in years.

In the following table, the data is,

- Column A shows the Name.
- Column B contains the Date of Birth.
- Column C for the Output [Age].

The steps to **Calculate Age from Date of Birth in Excel** using the basic formula are as follows:

** Step 1:** Select cell

**C2**and enter the formula

*=(TODAY()-B2)/365*.__Step 2__**:** Press the “**Enter**” key. The output is ‘**27.655030801**’, as shown below.

__Step 3__**: **As the output is a decimal, not an integer, we will enter the INT formula. Then, the complete formula will be ** =INT((TODAY()-B2)/365.25)**.

__Step 7__**:** Press the “**Enter**” key. Now, the exact age is ‘**27**’.

**#2 – Calculate Age using the YEARFRAC function**

We will first understand the **YEARFRAC function.**

**YEARFRAC function – **It calculates the number of whole days between two dates.

The syntax of the **YEARFRAC function **is,

The arguments of the **YEARFRAC function **are,

**start_date**– It denotes the start date. It is a mandatory argument.**end_date**– It denotes the end date. It is a mandatory argument.**basic**– It denotes dates fraction. It is an optional argument.

We will use the **YEARFRAC function to ****Calculate Age from Date of Birth in Excel**.

In the following table, the data is,

- Column A shows the Name.
- Column B contains the Date of Birth.
- Column C for the Output [Age].

The steps to **Calculate Age in Excel **using the** YEARFRAC function **are as follows:

** Step 1:** Select cell

**C2**and enter the

**.**

*=YEARFRAC(B2,TODAY(),1)*** [Note:** The

**, i.e., the DOB, is in cell**

*start_date***B2**. We will take the

**as today’s date, so use the**

*end_date***Today()**function and the

*basic**is*‘

**1**’

**].**

__Step 2__**:** Press the “**Enter**” key. The output is ‘**31**’, as shown in the image below.

**#3 – Calculate Age using the DATEDIF function**

We will first understand the** DATEDIF** **function.**

**DATEDIF** **function – **It calculates the number of whole days, full months, or full years between two dates.

The syntax of the **DATEDIF** **function **is,

*=DATEDIF(start_date,end_date,unit)*

The arguments of the **DATEDIF** **function **are,

– It is the start date of the period we want to calculate. It is a mandatory argument.*start_date*It is the end date of the period we want to calculate. It is a mandatory argument.*end_date –*– It is the time unit we want to calculate. It is a mandatory argument.*unit*

The Unit table is as follows:

Unit | Name | Explanation |
---|---|---|

Y | Years | Several years between the start and end date. |

M | Months | Number of months between start and end date |

D | Days | Number of days between start and end date |

MD | Days excluding year and months | Date difference in days, excluding months and years. |

YD | Days excluding years | Date difference in days, excluding years. |

YM | Months excluding days and years | Date difference in months, excluding days and years. |

We will use the **DATEDIF function to Calculate Age in Excel**.

In the following table, the data is,

- Column A shows the Start Date.
- Column B contains the End Date.
- Column C for the Output [Age].

The steps to **Calculate Age in Excel **using the** DATEDIF function **are as follows:

__Step 1__**:** Select the column C and add the formulas along with their units as follows,

- In cell
**C2**, enter the formula**=DATEDIF(A2,B2,”Y”)** - In cell
**C3**, enter the formula**=DATEDIF(A3,B3,”M”)** - In cell
**C4**, enter the formula**=DATEDIF(A4,B4,”D”)** - In cell
**C5**, enter the formula**=DATEDIF(A5,B5,”MD”)** - In cell
**C6**, enter the formula**=DATEDIF(A6,B6,”YD”)** - In cell
**C7**, enter the formula**=DATEDIF(A7,B7,”YM”)**

__Step 2__**:** After entering the formulas in their respective cells, press the “**Enter**” key.

We will get the above output shown in Column C. [Note: The results are as per the specified units, w.r.t days, months, years, etc. Column D is for our reference of the applied formulas].

**Other Examples Of Age Calculation**

We will consider a few other methods to **Calculate Age in Excel, **namely,

**DATEDIF and Arithmetic Operations to Calculate Age in Completed and Fractional Months.****CONCATENATE and DATEDIF to Calculate Age in Year, Months, and Days.**

**#1 – DATEDIF and Arithmetic Operations to Calculate Age in Completed and Fractional Months**

We will **Calculate Age in Excel** using the **DATEDIF and Arithmetic Operations in Completed and Fractional Months.**

In the following table, the data is,

- Column A shows the Start date.
- Column B contains the End Date.
- Column C is for output [Age].

The steps to **Calculate Age in Excel, **w.r.t months, are as follows:

** Step 1:** Select cell C2 and enter the formula

*=DATEDIF(A2, B2, “M”)*__Step 2__**:** Press the “**Enter**” key. The output is ‘**340**’ months, as shown below.

__Step 3__**: **Drag the formula from cell **C7** to **C8** using the fill handle.

We will get the output as shown above i.e., the number of months between the start and end dates.

**#2 – CONCATENATE and DATEDIF to Calculate Age in Year, Months, and Days**

We will **Calculate Age in Excel** using the **CONCATENATE function and DATEDIF in Years, Months, and Days.**

In the following table, the data is,

- Column A shows the Start date.
- Column B contains the End Date.
- Column C is for output [Age].

The steps to **Calculate Age in Excel, **w.r.t days, months, and years, are as follows:

** Step 1:** Enter the complete formula

**=CONCATENATE(DATEDIF(A2,B2,”Y”),”Years “,DATEDIF(A2,B2,”YM”),”Months and “,DATEDIF(A2,B2,”MD”),”Days”)**in cell

**C2**, as shown below.

__Step 2__**:** Press the** “Enter” **key. The result is ‘**28Years 1Months and 9days**’ in the image below.

__Step 3__**: **Drag the formula from cell **C2 to C7** using the fill handle.

We will get the output shown above. One formula gives the total years, months, and days.

**Important Things To Note**

- If we copy the
**DATEDIF**function to another cell in Excel, we will get the**#NUM!**error or just**0**in the cell. Therefore, we should enter the formula manually or drag it into a dataset since it is not an inbuilt function in Excel. - We will get the
**#NUM!**error if the end date is less than the start date. - If Excel does not recognize the valid dates, it returns the
**“#VALUE!”**error.

**Frequently Asked Questions**

**What is the Formula to Calculate Age in Excel?**

The **Formula to Calculate Age in Excel** is,**(Today’s Date – Date of Birth) / 365**

We can use 365.25 for counting a leap year which appears every four years.

For example, the DOB is “25 July 2005”, and Today’s date is “20 June 2022”, divided by 365.25.

The complete formula is ** =INT(TODAY()-A2)/365.25**. The result is ‘

**17**’.

**How to Calculate Age from Date of Birth in Excel?**

In the following image, the example shows the Date of Birth of Mr. Harry, and we will **Calculate Age from Date of Birth in Excel**.

The DOB is “25 December 1999,” and Today’s date is “20 June 2022”, divided by 365.25.

We can use 365.25 for counting a leap year which appears every four years. We use the INT function to get integer values as output, not decimals.

The complete formula is ** =INT(TODAY()-B2)/365.25**. The result is ‘

**22**’.

**How to Calculate Age in Excel between two dates?**

In the following image, the example shows a person’s Start Date and End Date, and we will **Calculate Age in Excel **between these two dates.

The complete formula is ** =DATEDIF(A2, B2, “Y”)**. The result is ‘

**36**’.

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