Please Note: This article is written for users of the following Microsoft Excel versions: 2007, 2010, 2013, 2016, 2019, and Excel in Microsoft 365. If you are using an earlier version (Excel 2003 or earlier), this tip may not work for you. For a version of this tip written specifically for earlier versions of Excel, click here: Calculating the Day of the Year.

# Calculating the Day of the Year

Written by Allen Wyatt (last updated October 24, 2022)
This tip applies to Excel 2007, 2010, 2013, 2016, 2019, and Excel in Microsoft 365

You've probably seen it on calendars before—some include an indication that "Today is the 123 day of the year with 242 remaining." You can easily calculate the day number of a year, as well as how many are remaining. For instance, let's assume you have a date in cell D27. You could use the following formulas to calculate, respectively, what day of the year it is and how many are still left:

```=D27-"12/31/2017"
="12/31/2018"-D27
```

The reason that the first formula uses a date of 12/31/2018 is so the result will show the actual day number. Using these formulas, the result of 1/1/2018 in cell D27 would result in 1, meaning it is the first day of the year. (This is as it should be.)

Of course, once you enter the formulas, you need to format the cells as regular numbers. (Excel will, by default, try to format the cells as dates.) With the two cells selected, follow these steps:

1. Display the Home tab of the ribbon.
2. Click the small icon at the lower-right corner of the Number group. Excel displays the Format Cells dialog box.
3. Make sure the Number tab is selected.
4. In the Category list, choose Number. (See Figure 1.)
5. Figure 1. The Number tab of the Format Cells dialog box.

6. Make sure the Decimal Places option is set to 0.
7. Click on OK.

ExcelTips is your source for cost-effective Microsoft Excel training. This tip (8727) applies to Microsoft Excel 2007, 2010, 2013, 2016, 2019, and Excel in Microsoft 365. You can find a version of this tip for the older menu interface of Excel here: Calculating the Day of the Year.

##### Author Bio

Allen Wyatt

With more than 50 non-fiction books and numerous magazine articles to his credit, Allen Wyatt is an internationally recognized author. He is president of Sharon Parq Associates, a computer and publishing services company. ...

##### MORE FROM ALLEN

Repeating Column Information on Each Page

When your table occupies lots of pages, you may want to have information in a particular column repeated on each page. ...

Discover More

Meaningless Text

Need to quickly put some text into a document, even if that text is essentially meaningless? Here's how to put this type ...

Discover More

Summing Based on Part of the Information in a Cell

Excel provides a variety of tools that allow you to perform operations on your data based upon the characteristics of ...

Discover More

Program Successfully in Excel! John Walkenbach's name is synonymous with excellence in deciphering complex technical topics. With this comprehensive guide, "Mr. Spreadsheet" shows how to maximize your Excel experience using professional spreadsheet application development tips from his own personal bookshelf. Check out Excel 2013 Power Programming with VBA today!

##### More ExcelTips (ribbon)

Using GEOMEAN with a Large List

When performing a statistical analysis on a large dataset, you may want to use GEOMEAN to figure out the geometric mean ...

Discover More

Selecting Random Names

Got a ton of names from which you need to select a few random names? There are several ways you can extract what you ...

Discover More

Returning Values to the Left of a VLOOKUP

VLOOKUP is a great function to use in accessing data based on a lookup value. Problem is, you can't easily return ...

Discover More
##### Subscribe

FREE SERVICE: Get tips like this every week in ExcelTips, a free productivity newsletter. Enter your address and click "Subscribe."

If you would like to add an image to your comment (not an avatar, but an image to help in making the point of your comment), include the characters [{fig}] (all 7 characters, in the sequence shown) in your comment text. Youâ€™ll be prompted to upload your image when you submit the comment. Maximum image size is 6Mpixels. Images larger than 600px wide or 1000px tall will be reduced. Up to three images may be included in a comment. All images are subject to review. Commenting privileges may be curtailed if inappropriate images are posted.

What is 8 - 2?

2022-10-24 08:22:23

Joe Lamontagne

I believe that in this sentence, "The reason that the first formula uses a date of 12/31/2018...," "2018" should be "2017."

2022-10-24 06:41:21

Phil Vaughan

Hi Allen,

Calculating the day of the year...

=DAYS(D27,CONCATENATE("31/12/",YEAR(D27)-1)) ' Day of the year
=DAYS(CONCATENATE("31/12/",YEAR(D27)),D27)+1 ' Days to go in the year

Cheers, Phil

2018-08-06 14:25:13

D Dodge

A more generic formula not limited to 2018 would be:
=TODAY()-CONCAT("1/1/",YEAR(TODAY()))
This gives you the day number for today. Replace both TODAY() with a cell reference if you want the day number for a specific date in your spreadsheet.

The number of days remaining can also be year independent:
=IF(MOD(YEAR(TODAY()),4)=0,366-A1,365-A1)
where A1 is the cell containing the day of year number calculation. Again, replace TODAY() with a cell reference if a specific date other than today is used. As mentioned in the article, both cells need to be formatted as NUMBER with zero decimal points.

2018-08-05 10:29:46

Allen

Simon, you are correct. I changed the article to reflect 2018, as it should.

-Allen

2018-08-05 04:01:50

Simon Freeman

(A) Don't forget to change the date to 31/12/2017 in countries where dd/mm/yyyy is the norm.
(B) Shouldn't the date in the second formula be 12/31/2018 (not 2017) to get the days to the end of the year.

2018-08-04 06:53:20

Russell

=D27-Date(Year(D27),1,0)

would also work, and means you don't have to manually enter the year

##### This Site

Got a version of Excel that uses the ribbon interface (Excel 2007 or later)? This site is for you! If you use an earlier version of Excel, visit our ExcelTips site focusing on the menu interface.