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How to calculate days until next birthday in Excel?

If you want to know how many days remaining until your next birthday, how would you do? Actually, if you are using Microsoft Excel, you can use formulas in the worksheet to easily count the days until next birthday. Please browse for more details as below tutorial shows.

Count days until next birthday with formulas

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Count days until next birthday with formulas

For counting days until next birthday with formulas, please do as follows.

Step 1. Create a worksheet with headers showing below

In a worksheet, create column headers consecutively as below screenshot shows. And type your date of birthday into the cell A2 under the Date of birthday header.

Step 2. Get today’s date

Now we need to get Today’s date with formula. Select cell B2, copy and paste formula =TODAY() into the Formula Bar, and press Enter ley.

Then you get the Date of today in the cell B2.

Step 3. Get the date of next birthday

Select cell C2, copy and paste formula =DATE(YEAR(A2)+DATEDIF(A2,B2,"y")+1,MONTH(A2),DAY(A2)) into the Formula Bar, and press Enter key, see screenshot below.

Step 4. Get the remaining days until next birthday

Select cell D2, copy and paste formula =DATEDIF(B2,C2,"d") into the Formula Bar, then press Enter key.

Then you will get the remaining days until next birthday in cell D2.

Note: Besides the above formulas, here also has one formula can do you a favor, please enter your birth date into a blank cell, A1 for example, and then type following formula: =IF(A1,DATE(YEAR(A1)+DATEDIF(A1+1,TODAY(),"y")+1,MONTH(A1),DAY(A1))-TODAY(),""), and then press Enter key to get the remaining days until next birthday.


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  • To post as a guest, your comment is unpublished.
    Prashant Patel · 1 years ago
    How To Calculate Hours, Minute and Second Until Next Birthday In Excel?
    • To post as a guest, your comment is unpublished.
      crystal · 1 years ago
      Good Day,
      After getting the days with above formula, how about multiply the days by 24, 1440 or 86400 to get the total hours, minutes or seconds until the next birthday in Excel?
  • To post as a guest, your comment is unpublished.
    Bryson · 1 years ago
    When I use the formula posted in the notes, if the date is within the upcoming ten days, it give me a #NUM! code. Why is this?
    • To post as a guest, your comment is unpublished.
      helpfuk · 4 months ago
      swap the dates around in a1 and b1
    • To post as a guest, your comment is unpublished.
      crystal · 1 years ago
      Good Day,
      The date within the upcoming ten days is your next birthday, so after getting current date with formula =TODAY(), please use the formula =DATEDIF(B2,C2,"d") (B2 is the cell contains the current date, C2 contains the birthday of your own) directly to get the remaining days until next birthday.