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

Determining if Calculation is Necessary

by Allen Wyatt
(last updated June 23, 2018)

Excel allows you to control when it recalculates a worksheet. Normally, Excel recalculates anytime you change something in a cell. If you are working with very large worksheets that have lots of formulas in them, you may want to turn off the automatic recalculation feature. You can turn off automatic recalculation using controls on the Calculation tab of the Options dialog box.

Your macros can also force Excel to recalculate your worksheet. If you have automatic recalculation turned on, then any change your macro makes in a worksheet will force Excel to recalculate. If you have automatic recalculation turned off, then you can use the Calculate method to recalculate a worksheet:

ActiveSheet.Calculate

Of course, if recalculation takes quite a while to perform, you might want to check to see if a recalculation is necessary before actually forcing one. It appears that there is no flag you can directly check to see if a recalculation is necessary. The closest thing is to check the Workbook object's Saved property. This property essentially acts as a "dirty flag" for the entire workbook. If there are unsaved changes in a workbook, then the Saved property is False; if everything is saved, then it is True.

How does this help you figure out if a recalculation is necessary? Remember that calculation is only necessary when there are changes in a worksheet. Changing anything in a worksheet will also set the workbook's Saved property to False. Thus, you could check the Saved property before doing the recalculation, as shown here:

If Not ActiveWorkbook.Saved Then
    ActiveSheet.Calculate
End If

There is only one problem with this approach, of course—the Saved property is only set to True if the workbook is actually saved. This means that you could recalculate multiple times without really needing to do so, unless you tie saving and recalculation together, as shown here:

If Not ActiveWorkbook.Saved Then
    ActiveSheet.Calculate
    ActiveWorkbook.Save
End If

The wisdom of approaching this problem in this manner depends on the nature of your particular situation. If it takes longer to save the workbook than it does to simply recalculate, then this approach won't work. If, however, recalculation takes longer (which is very possible with some types of operations), then this approach may work well.

Note:

If you would like to know how to use the macros described on this page (or on any other page on the ExcelTips sites), I've prepared a special page that includes helpful information. Click here to open that special page in a new browser tab.

ExcelTips is your source for cost-effective Microsoft Excel training. This tip (2323) applies to Microsoft Excel 97, 2000, 2002, and 2003. You can find a version of this tip for the ribbon interface of Excel (Excel 2007 and later) here: Determining if Calculation is Necessary.

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

Making Backup Copies

When you save your documents, Word doesn't normally make backups of your files. If you want the program to do that, it ...

Discover More

Selecting a Paper Size

Excel can print your worksheet on just about any paper size you can imagine. How you select the paper size you want used ...

Discover More

Appearance of Excel on the Taskbar

Do you want Excel to use a task button, on the Windows Taskbar, for each of your open worksheets? Then just make this ...

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 (menu)

Filling a Range of Cells with Values

When writing a macro, you may want to fill a range of cells with different values. The easiest way to do this is to use ...

Discover More

Determining an ANSI Value in a Macro

Need to know the character code used for a particular character? In a macro you can use the Asc function to determine the ...

Discover More

Worksheet Events

You can create macros that are automatically executed whenever certain events occur within a worksheet. This tip details ...

Discover More
Subscribe

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

View most recent newsletter.

Comments

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}] in your comment text. You’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 one more than 5?

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

Newest Tips
Subscribe

FREE SERVICE: Get tips like this every week in ExcelTips, 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.