Skip to main content

How to calculate age in years and months and days from date of birth in Excel?

Author Sun Last modified

If there is a column of given birth dates, could you quickly calculate each age based on that given birth dates in years and months and days or in decimal number as below screenshot shown? This article, I will introduce the formula to handle this job.
calculate age in years and months and days

Calculate age in years and months and days from date of birth

Calculate age in decimal number from date of birth

Calculate age in integer number from date of birth good idea3

Calculate age in years and months and days from date of birth

Select the cell which you will place the age, type this formula

=DATEDIF(A2,$F$2,"Y")&" Years, "&DATEDIF(A2,$F$2,"YM")&" Months, "&DATEDIF(A2,$F$2,"MD")&" Days"

Then press Enter key to get the result. Drag the auto fill handle down to the cells which need this formula.

In the formula, A2 is the birth date, F2 is the date of today.
apply a formula to calculate age in years and months and days

a screenshot of kutools for excel ai

Unlock Excel Magic with Kutools AI

  • Smart Execution: Perform cell operations, analyze data, and create charts—all driven by simple commands.
  • Custom Formulas: Generate tailored formulas to streamline your workflows.
  • VBA Coding: Write and implement VBA code effortlessly.
  • Formula Interpretation: Understand complex formulas with ease.
  • Text Translation: Break language barriers within your spreadsheets.
Enhance your Excel capabilities with AI-powered tools. Download Now and experience efficiency like never before!

Calculate age in decimal number from date of birth

Select the cell which you will place the age, type this formula

=DATEDIF(A2,$F$2,"Y")&"."&DATEDIF(A2,$F$2,"YM")

Then press Enter key to get the result. Drag the auto fill handle down to the cells which need this formula.

In the formula, A2 is the birth date, F2 is the date of today.
apply a formula to calculate age in decimal number

Calculate age in integer number from date of birth

If you just want to calculate the age in integer number, you can use the Calculate age based on birthday function to quickly handle it.

Kutools for Excel offers over 300 advanced features to streamline complex tasks, boosting creativity and efficiency. Itegarate with AI capabilities, Kutools automates tasks with precision, making data management effortless. Detailed information of Kutools for Excel...         Free trial...

After free installing Kutools for Excel, please do as below:

1. Select the cell which you will place the age, click Kutools > Formula Helper > Formula Helper.
click Formula Helper featue of kutools

2. In the Formula Helper dialog, choose Calculate age based on birthday in Choose a formula section, then select the cell contains birth date into Date textbox, click Ok.
choose Calculate age based on birthday formula and set arguments

3. Now the age has been calculated in integer number, drag fill handle down to the cell for applying the formula.
the age has been calculated in integer number

Best Office Productivity Tools

🤖 Kutools AI Aide: Revolutionize data analysis based on: Intelligent Execution   |  Generate Code  |  Create Custom Formulas  |  Analyze Data and Generate Charts  |  Invoke Kutools Functions…
Popular Features: Find, Highlight or Identify Duplicates   |  Delete Blank Rows   |  Combine Columns or Cells without Losing Data   |   Round without Formula ...
Super Lookup: Multiple Criteria VLookup  |   Multiple Value VLookup  |   VLookup Across Multiple Sheets   |   Fuzzy Lookup ....
Advanced Drop-down List: Quickly Create Drop Down List   |  Dependent Drop Down List   |  Multi-select Drop Down List ....
Column Manager: Add a Specific Number of Columns  |  Move Columns  |  Toggle Visibility Status of Hidden Columns  |  Compare Ranges & Columns ...
Featured Features: Grid Focus   |  Design View   |   Big Formula Bar   |  Workbook & Sheet Manager   |  Resource Library (Auto Text)   |  Date Picker   |  Combine Worksheets   |  Encrypt/Decrypt Cells   |  Send Emails by List   |  Super Filter   |   Special Filter (filter bold/italic/strikethrough...) ...
Top 15 Toolsets:  12 Text Tools (Add Text, Remove Characters, ...)   |   50+ Chart Types (Gantt Chart, ...)   |   40+ Practical Formulas (Calculate age based on birthday, ...)   |   19 Insertion Tools (Insert QR Code, Insert Picture from Path, ...)   |   12 Conversion Tools (Numbers to Words, Currency Conversion, ...)   |   7 Merge & Split Tools (Advanced Combine Rows, Split Cells, ...)   |   ... and more
Use Kutools in your preferred language – supports English, Spanish, German, French, Chinese, and 40+ others!

Supercharge Your Excel Skills with Kutools for Excel, and Experience Efficiency Like Never Before. Kutools for Excel Offers Over 300 Advanced Features to Boost Productivity and Save Time.  Click Here to Get The Feature You Need The Most...

Office Tab Brings Tabbed interface to Office, and Make Your Work Much Easier

  • Enable tabbed editing and reading in Word, Excel, PowerPoint, Publisher, Access, Visio and Project.
  • Open and create multiple documents in new tabs of the same window, rather than in new windows.
  • Increases your productivity by 50%, and reduces hundreds of mouse clicks for you every day!