How to Calculate Age in Excel: Complete Guide
Learn multiple methods to calculate age in Excel using formulas. Step-by-step guide with examples for beginners and advanced users.
Introduction
Calculating age in Excel is a common task that can be accomplished using several different formulas. Whether you're managing employee records, student databases, or personal information, knowing how to calculate age accurately is essential.
Method 1: Using DATEDIF Function
The DATEDIF function is the most straightforward way to calculate age:
=DATEDIF(birthdate, TODAY(), "Y")
This formula calculates the complete years between the birth date and today.
Method 2: Using YEARFRAC Function
For more precise calculations including decimals:
=INT(YEARFRAC(birthdate, TODAY()))
Method 3: Simple Subtraction
A basic method using year subtraction:
=YEAR(TODAY())-YEAR(birthdate)
Note: This method doesn't account for whether the birthday has occurred this year.
Best Practices
- Always use TODAY() for current date calculations
- Format cells as numbers, not dates
- Consider leap years in your calculations
- Use absolute references for birth date cells
Conclusion
Excel offers multiple ways to calculate age, each with its own advantages. Choose the method that best fits your needs and data structure.