Automatically Calculate Age from Date of Birth in Excel
Need to calculate an employee's age from date of birth in Excel? Handling of employee data, student records, or survey details: Microsoft Excel can calculate age instantly through its built-in functions, eliminating manual calculation or a calculator.
This guide tells you exactly how to calculate age automatically from the date of birth using Excel formulas that work in all major versions.
📆 Method 1: Using the DATEDIF Function (Most Accurate)
With the DATEDIF function, you can find the age from the date of birth.
Formula:
=DATEDIF(A2, TODAY(), "Y")
- A2: Cell with date of birth
- TODAY(): Current date, dynamic
- "Y": Number of completed years (age)
Example:
Name |
DOB |
Age |
John |
04/10/1990 |
=DATEDIF(B2, TODAY(), "Y") |
This, then, provides an age in years and is updated daily.
📊 Method 2: The Age in Years, Months, and Days
More detailed?
=DATEDIF(A2, TODAY(), "Y") & " Years, " & DATEDIF(A2, TODAY(), "YM") & " Months"
This returns something like: "33 Years, 2 Months."
🔢 Method 3: Using YEAR and TODAY Functions
Another way (simpler) would be:
=YEAR(TODAY()) - YEAR(A2)
⚠️ This will overestimate the age if the given birthday hasn't occurred yet for that year. Thus, it is less accurate than DATEDIF.
✅ Best Practices and Tips
- For greater precision, use DATEDIF.
- It is wise to format your DOB cells as Date, thereby eliminating formula errors.
- A good idea is to use data validation to filter out erroneous DOB input.
- Pair with conditional formatting so that certain age ranges can be highlighted (e.g., more than 60).
🔄 Automatically Adapt to Changes
One thing about TODAY() is that it updates the age calculation every time one opens the Excel file. Great for HR, school, or client databases.
📘 Real Use
- Tracks HR records and the onboarding of workers.
- Maintains information systems for schools and colleges.
- Age-based filters for surveys or reports.
- Healthcare or insurance databases.
In one simple formula, Excel becomes a dynamic age calculator to eliminate manual errors and enhance productivity. Start calculating age in Microsoft Excel today and give your spreadsheet some mind!
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✍️ Other Articles, Tips & Tricks you would like:
- Using Formulas Create a Running Total in Microsoft Excel
- Use IF Function for Smarter Decision-Making in Microsoft Excel
- Worksheet Protection for your Spreadsheets in Microsoft Excel
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