Please Note: This article is written for users of the following Microsoft Word versions: 97, 2000, 2002, and 2003. If you are using a later version (Word 2007 or later), this tip may not work for you. For a version of this tip written specifically for later versions of Word, click here: Calculating Dates with Fields.

Calculating Dates with Fields

by Allen Wyatt
(last updated January 27, 2017)

Aidan asked if it is possible to calculate dates using fields. Seems he wants a date that is two weeks in the future, and thought there must be an easy way to calculate such a future date using fields. Unfortunately, there is no easy way. While Word allows you to do simple calculations using numeric values in fields, it does not allow you to perform such calculations using dates instead of numbers.

You can, however, pull dates apart into their intrinsic portions (months, days, and years), and then do your calculations, but this introduces whole new problems. All of a sudden you need to be concerned with what happens when you "roll" past the end of a month or year. The math involved in doing such a calculation is not trivial. As an example, consider the following compound field:

{QUOTE "{SET Delay "14"}{SET "DaysInMonth" {IF {DATE \@ "MM"}
<> 2 {=ROUND(30.575*{DATE \@ "MM"},0)-ROUND(30.575*{= {DATE \@
"MM"} –1},0)}{IF {=MOD({DATE \@ "yy"|, 4)} > 0 "28" "29"}}}{SET
"NextMonth" {IF {DATE \@ "MM"} = 12 "1/97" "{= {DATE \@ "MM"}
+ 1}/97}}{IF {= {REF Delay} + {DATE \@ "dd"}} <= {DaysInMonth}
{DATE \@ "MMMM {= {REF Delay} + {DATE \@ "dd"}}, yyyy"}{QUOTE
"{NextMonth \@ "MMMM"} {= {REF Delay} + {DATE \@ "dd"} –
{DaysInMonth}}, {IF {DATE \@ "MM"} <> 12 {DATE \@ "yyyy"}{DATE
\@ "{= 1 + {DATE \@ "yyyy"} \# "xxxx"}" }}}}"}

This will return the date in two weeks time (specified in the first line where the Delay value is set. The drawback, of course, is the compound nature of the field—there are over 30 different fields just within this compound field! Even this implementation, as formidable as it looks, will not handle leap years correctly in all instances. (It won't handle leap years correctly in century years divisible by 400.)

Is there an easy way to calculate future dates? Yes, there is—simply use macros. With just a couple of simple instructions you can make short work out of otherwise difficult date calculations. The way this is done was covered in an earlier WordTips; you can also find information at the following Word MVP page:

http://wordmvp.com/FAQs/MacrosVBA/DateOfPrevMonth.htm

WordTips is your source for cost-effective Microsoft Word training. (Microsoft Word is the most popular word processing software in the world.) This tip (1579) applies to Microsoft Word 97, 2000, 2002, and 2003. You can find a version of this tip for the ribbon interface of Word (Word 2007 and later) here: Calculating Dates with Fields.

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

Selecting a Cell in the Current Row

Macros often need to select different cells in a worksheet. Here's how you can use macro commands to change which cell is ...

Discover More

Calculating Monthly Interest Charges

Trying to calculate how much people owe you? If you charge interest or service charges on past-due accounts, there are a ...

Discover More

Adding a Break to Your Document

Want to modify the way your text flows between pages in a document? Word allows you to insert several types of breaks that ...

Discover More

Create Custom Apps with VBA! Discover how to extend the capabilities of Office 2013 (Word, Excel, PowerPoint, Outlook, and Access) with VBA programming, using it for writing macros, automating Office applications, and creating custom applications. Check out Mastering VBA for Office 2013 today!

MORE WORDTIPS (MENU)

Updating Calculated Fields in a Form

When creating a Word form, you use special form fields to collect information from users. You can even perform calculations ...

Discover More

Counting Fields in a Document

Need to count the number of times a particular field appears in a document? It's easy to do when you apply the techniques ...

Discover More

Inserting a Document's Path

You can use the FILENAME field to insert a document's filename and, optionally, the path to that filename. However, if you ...

Discover More
Subscribe

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

View most recent newsletter.

Comments for this tip:

There are currently no comments for this tip. (Be the first to leave your comment—just use the simple form above!)

This Site

Got a version of Word that uses the menu interface (Word 97, Word 2000, Word 2002, or Word 2003)? This site is for you! If you use a later version of Word, visit our WordTips site focusing on the ribbon interface.

Subscribe

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

(Your e-mail address is not shared with anyone, ever.)

View the most recent newsletter.

Links and Sharing
Share