Filename Extensions
If you are seeking information about file extensions, then you are in the right place at right time.

Details of extension .xls3

1 extension(s) and 0 alias(es) in our database

Below, you can find answers to the following questions:

  • What is the .xls3 file?
  • Which program can create the .xls3 file?
  • Where can you find a description of the .xls3 format?
  • What can convert .xls3 files to a different format?
  • Which MIME-type is associated with the .xls3 extension?
Microsoft Excel 3 for Mac Document .xls3 file icon

Microsoft Excel 3 for Mac Document

XLS3 file is a Microsoft Excel 3 for Mac Document. Microsoft Office Excel is a spreadsheet developed by Microsoft for Windows, macOS, Android and iOS.
Detailed description not available
Category: Document files
Application: Microsoft Excel
Program name: -
Mime-type: application/
Magic bytes (HEX): -
Magic string (ASCII): -
Related extensions:
Microsoft Works Spreadsheet
Quattro Pro Spreadsheet
Microsoft Excel VBA Add-in
Microsoft Excel toolbar Setup
Microsoft Excel Chart File
Microsoft Excel Dialogue
Microsoft Excel XLS Backup
Microsoft Excel Macro Definition
Microsoft Excel Worksheet

Other types of files may also use the .xls3 file extension. If you have helpful information about .xls3 extension, write to us!

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

Band-in-a-Box Third-Party Styles
Document Manager Encrypted XLS Document
Lumion Project
Microsoft Excel 3 for Mac Workbook Document
Microsoft Excel 3 for Mac Template
XESS Worksheet
Vegaelec XL3 System Data
Microsoft Excel 3 for Mac Chart Document
Microsoft Excel Worksheet

The .xls3 filename extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

ls3 (1), xs3 (1), xlse (1), xlc3 (1), sls3 (1), xlw3 (1), xls (1), xl3 (1)

Can't open a .xls3 file?

If you want to open a .xls3 file on your computer, you just need to have the appropriate program installed. If the .xls3 association isn't set correctly, you may receive the following error message:

Windows can't open this file:

File: example.xls3

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2003/2008/2012/2016, Windows 7, Windows 8, Windows 10, Linux, FreeBSD, NetBSD, OpenBSD, Mac OS X, iOS, Android

Rate this page

4 / 5 based on 1 user ratings.