Calculating someone’s age from their birthdate in Excel may seem daunting, but it’s actually quite simple! All you need is the birthdate and the current date, and with a few clicks, Excel can do the math for you. In just a few steps, you’ll have an accurate age calculation that takes into account leap years and other date-related quirks.

## Step by Step Tutorial: How to Calculate Age from a Birthdate in Excel

Before we dive into the steps, let’s understand what we’re about to do. We’re going to use a formula in Excel that subtracts the birthdate from the current date. This will give us the person’s age in days, which we will then convert into years. Ready? Let’s get started.

### Step 1: Enter the Birthdate

Type the birthdate into a cell in the Excel spreadsheet.

When entering the birthdate, make sure it’s in a recognizable date format for Excel, such as MM/DD/YYYY or DD/MM/YYYY.

### Step 2: Use the TODAY Function

In a new cell, type in the formula ‘=TODAY()’ to get the current date.

The TODAY function always provides the current date whenever you open the Excel document, meaning the age calculation will always be up-to-date.

### Step 3: Subtract the Birthdate from the Today Date

In a third cell, subtract the birthdate cell from the TODAY function cell.

This will give you the person’s age in days, which isn’t quite what we want yet, but we’re getting there.

### Step 4: Convert Days to Years

Finally, divide the number of days by 365.25 to convert the age from days to years.

The .25 accounts for leap years, providing a more accurate age. After this step, you’ll have the person’s age in years.

After completing these steps, you’ll have a cell that displays the person’s age. It’s a straightforward process that takes mere minutes to complete, and once you’ve set it up, Excel will continue to update the age automatically every time you open the document.

## Tips: How to Calculate Age from a Birthdate in Excel

- Ensure the cell format for the birthdate is set to ‘Date’ to avoid any errors.
- Use the ‘INT’ function to round down the age to the nearest whole number if you don’t want to display decimal points in the age.
- If you want to calculate the age as of a specific date rather than today, replace the TODAY function with the specific date in the formula.
- For privacy concerns, consider using conditional formatting to hide the birthdate once the age is calculated.
- Remember that Excel dates start on January 1, 1900, so make sure the birthdate is after that day.

## Frequently Asked Questions

### How does Excel know how many days are in each month or year?

Excel has built-in date functions that account for the varying number of days in each month and leap years.

### Can this formula be used for a list of birthdates?

Absolutely, just drag the formula down the column to calculate the age for each birthdate in the list.

### Will the age update automatically?

Yes, as long as you’re using the TODAY function, the age will update each time you open the Excel document.

### What if I need to calculate age in months or weeks?

You can modify the formula by dividing by 12 (for months) or by 7 (for weeks) instead of 365.25.

### Is there a way to calculate the upcoming birthday?

You can use the DATEDIF function with the “ym” parameter to calculate the months and days until the next birthday.

## Summary

- Enter the birthdate into a cell.
- Use the TODAY function to get the current date.
- Subtract the birthdate from the TODAY date.
- Convert the days to years by dividing by 365.25.

## Conclusion

And there you have it! You’re now an Excel age-calculating whiz. This handy skill can be useful in numerous scenarios, whether you’re managing employee records, organizing event participants, or just keeping track of family birthdays. Remember, practice makes perfect, so don’t be afraid to play around with different formulas and functions within Excel to see what else you can accomplish. With these steps, you’ll be able to calculate age from a birthdate in Excel efficiently and accurately. Happy calculating!

Matthew Burleigh has been a freelance writer since the early 2000s. You can find his writing all over the Web, where his content has collectively been read millions of times.

Matthew received his Master’s degree in Computer Science, then spent over a decade as an IT consultant for small businesses before focusing on writing and website creation.

The topics he covers for MasterYourTech.com include iPhones, Microsoft Office, and Google Apps.

You can read his full bio here.