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 the Length of a Text File.

Determining the Length of a Text File

Written by Allen Wyatt (last updated January 7, 2023)
This tip applies to Excel 97, 2000, 2002, and 2003


Other ExcelTips have discussed opening, reading, writing, appending, and closing text files. Another VBA function associated with sequential text files is the LOF function. If used on an open file, it returns the length of the file, in bytes. In other words, you can determine the number of characters in the file.

This can come in handy if you are processing a text file character by character. You can determine the length of the file and then read that many characters before you finish processing the file. The following code fragment is an example of how the LOF function is used:

Open "MyFile.Dat" for Input as #1
FileLen = LOF(1)

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 (2517) 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 the Length of a Text File.

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

Error Message about WRS File

Error messages in Word can be frustrating. For instance, if you see a message that says something about WRS files, it can ...

Discover More

Intelligently Starting a New Paragraph

When using styles in a document, you can increase your productivity by letting Word know what paragraph style you expect ...

Discover More

Using the Status Bar

When developing a macro, you may want to display on the status bar what the macro is doing. Here's how to use this ...

Discover More

Professional Development Guidance! Four world-class developers offer start-to-finish guidance for building powerful, robust, and secure applications with Excel. The authors show how to consistently make the right design decisions and make the most of Excel's powerful features. Check out Professional Excel Development today!

More ExcelTips (menu)

Sudden Increases in Workbook File Size

Workbooks can get rather large rather quickly. If you think your workbook has gotten too big too fast, here are some ...

Discover More

Who Has the File Open?

Open a workbook that someone else is working on, and you won't be able to save your changes back into the same file. ...

Discover More

CSV File Opens with Data in a Single Column

When you import a CSV file into an Excel worksheet, you may be surprised at how the program allocates the information ...

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}] (all 7 characters, in the sequence shown) 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 1 + 3?

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.