Please Note: This article is written for users of the following Microsoft Excel versions: 2007, 2010, 2013, and 2016. 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: Determining the Length of a Text File.

Determining the Length of a Text File

by Allen Wyatt
(last updated July 10, 2018)

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 (9094) applies to Microsoft Excel 2007, 2010, 2013, and 2016. You can find a version of this tip for the older menu interface of Excel 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

Putting Your Index after Your Endnotes

Endnotes are supposed to be at the end of your document, right? Not necessarily. You may want something else at the end, ...

Discover More

Converting Forced Text to Numbers

If you have some numbers stored in cells that are formatted as text, you may get some surprises when you try to use those ...

Discover More

Excluding a Specific Add-In at Startup

Got an add-in that you don't want loaded each time that Excel starts up? Here are a few ways that you can exclude it.

Discover More

Excel Smarts for Beginners! Featuring the friendly and trusted For Dummies style, this popular guide shows beginners how to get up and running with Excel while also helping more experienced users get comfortable with the newest features. Check out Excel 2013 For Dummies today!

More ExcelTips (ribbon)

How Excel Treats Disk Files

Workbooks are loaded from disk files, but workbooks aren't the only type of files that Excel can load. This tip provides ...

Discover More

Accessing Old Excel Data

If you have some legacy data stored in very old spreadsheet files, you may be wondering how to get that data into an ...

Discover More

Determining If a File Exists

Before you have your macro open and read a file from disk, you'll want to check to make sure it is really there. Here's ...

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.

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

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 three 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 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.

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.

Links and Sharing
OUR COMPANY
OUR PRODUCTS
OUR AUTHORS
OUR SITES
 

Copyright © 2018 Sharon Parq Associates, Inc.